Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

THERMODYNAMICS (30 journals)

Showing 1 - 29 of 29 Journals sorted alphabetically
Advances in Heat Transfer     Full-text available via subscription   (Followers: 26)
Applied Thermal Engineering     Hybrid Journal   (Followers: 41)
Araucaria. Revista Iberoamericana de Filosofía, Política y Humanidades     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 9)
Chemical Thermodynamics and Thermal Analysis     Open Access   (Followers: 7)
Condensed Matter Physics     Open Access   (Followers: 2)
Diffusion Foundations     Full-text available via subscription   (Followers: 4)
European Journal of Mechanics - B/Fluids     Hybrid Journal   (Followers: 5)
Experimental Heat Transfer     Hybrid Journal   (Followers: 17)
Experimental Thermal and Fluid Science     Hybrid Journal   (Followers: 35)
Fluids     Open Access   (Followers: 1)
Heat and Mass Transfer     Hybrid Journal   (Followers: 28)
Heat Transfer Engineering     Hybrid Journal   (Followers: 37)
High Temperature     Hybrid Journal   (Followers: 2)
HTM Journal of Heat Treatment and Materials     Full-text available via subscription   (Followers: 3)
International Journal of Thermodynamics     Open Access   (Followers: 11)
International Journal of Thermophysics     Hybrid Journal   (Followers: 7)
Journal of Thermodynamics & Catalysis     Open Access   (Followers: 6)
Journal of Chemical Thermodynamics     Hybrid Journal   (Followers: 4)
Journal of Low Temperature Physics     Hybrid Journal   (Followers: 7)
Journal of Non-Newtonian Fluid Mechanics     Hybrid Journal   (Followers: 16)
Journal of Thermal Science     Hybrid Journal   (Followers: 21)
Journal of Thermal Spray Technology     Hybrid Journal   (Followers: 5)
Journal of Thermodynamics     Open Access   (Followers: 7)
Journal of Thermophysics and Heat Transfer     Hybrid Journal   (Followers: 93)
Low Temperature Physics     Hybrid Journal   (Followers: 5)
Metal Science and Heat Treatment     Hybrid Journal   (Followers: 36)
Quantitative InfraRed Thermography Journal     Hybrid Journal  
Thermophysics and Aeromechanics     Hybrid Journal   (Followers: 6)
Similar Journals
Journal Cover
Journal of Thermal Spray Technology
Journal Prestige (SJR): 0.688
Citation Impact (citeScore): 2
Number of Followers: 5  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1544-1016 - ISSN (Online) 1059-9630
Published by Springer-Verlag Homepage  [2468 journals]
  • Study of the Propane Detonation Spraying under Different Gun Structures

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      Abstract: Abstract Detonation spraying is a technique that uses the high-temperature, high-velocity detonation waves to deposit the molten metal particles onto the target surface. The effect of the detonation spraying is influenced by the structure of the gun significantly. A series of detonation spraying gun two-dimensional (2-D) numerical models with various spray gun structures (slope lengths from 5 to 45 mm with a step of 10 mm) were established in this work, to investigate the spray performance. During the process of gas detonation, the interaction between the detonation wave and obstacles results in the generation of reflected waves, which exerts an accelerating effect on flame. Simultaneously, collisions between the flame front and obstacles introduce energy losses. Based on the above factors, the following results can be obtained: when the slope length at the nozzle diameter change point is 5 mm, the maximum flow velocity is achieved at the spray gun outlet. When the slope length at the transition point of the spray gun is 25 mm, the maximum temperature is reached at the spray gun outlet. When the slope length at the transition point of the spray gun is 45 mm, the maximum pressure is reached at the spray gun outlet. This work can contribute to the design of the detonation gun.
      PubDate: 2024-06-06
       
  • Investigation on the Microstructure Evolution and Properties of a Novel
           In-Situ Fiber Phase-Reinforced Nickel Composite Coating Deposited by
           Wide-Band Laser

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      Abstract: Abstract In this paper, a novel hard nickel composite coatings were fabricated by wide-band laser cladding technique. The effects of Si alloying on the composite coatings were investigated by microstructure characterization, phase identification, microhardness and wear resistance. Results showed that the in-situ precipitated phases in the laser molten pool were composed of the γ-Ni solid solution and hard phases such as Cr23C6, CrSi, Cr5B3. With the increase of Si element, the morphology of the precipitated phases changed significantly. When the added content of Si was 1.0 wt.%, the precipitated phase was a mainly block morphology. As the added content of Si was increased to more than 2.0 wt.%, the main precipitated phase was transformed into a long stripe morphology. With the increase of Si content, the stripe-like precipitated phase was gradually refined and finally becomes density needle-like precipitates. Element distribution analysis showed that the block precipitated phase was enriched in Cr, W and Si elements. Additionally, the enriched elements in the long strip precipitation phase were essentially the same as those in the block precipitation phase. The added Si element was highly involved in the in-situ reactions of precipitated phase. The TEM results showed that the precipitated phases contained the crystal structures of Cr5B3 and Cr7C3. The pin-on-disc wear tests revealed that the composite coating with the addition of 6 wt.% Si exhibited the best wear resistance in the experimental group. The average friction coefficient was about 0.6 and the wear mass loss rate was about 2.38 × 10−5 g/m under counter-abrasive conditions. The worn surface analysis indicated that the wear mechanism of composite coatings was mainly abrasive wear. The refined needle-like precipitated phase was closely bound to the matrix and thus not easy to peel off, providing a significant improvement in the wear resistance of the laser cladding coatings.
      PubDate: 2024-06-05
       
  • Correction to: Machine Learning-Based Diagnosis of Thermal Barrier Coating
           Process Quality

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      PubDate: 2024-05-31
       
  • Effect of Low Plasma Spraying Power on Anode Microstructure and
           Performance for Metal-Supported Solid Oxide Fuel Cells

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      Abstract: Abstract Metal-supported solid oxide fuel cells have broad application prospects in distributed power generation, transportation, military, and other fields. The electrochemical performance of the cell is still a challenge in commercial applications. Regulating the anode microstructure and optimizing polarization characteristics are effective methods. In this study, atmospheric plasma spraying technology is chosen to prepare the Ni-Gd0.2Ce0.8O1.9(GDC) anodes using different low plasma powers (18, 21, 24 kW), which is cost-effective and efficient. The power effect on anode microstructure and electrochemical performance is investigated. The results show that as the plasma power decreases from 24 to 18 kW, the anode’s gas permeability and three-phase reaction boundary (TPB) gradually increase. Reducing the spraying power can decrease polarization resistance and improve power density. The 18-kW anode exhibits the lowest polarization resistance and the best output performance. Open-circuit voltage and maximum power density are 1.03 V and 0.89 W cm−2 at 750 °C, respectively. The polarization resistance and total resistance are 0.19 and 0.40 Ω cm2, respectively. The experimental results prove that atmospheric plasma spraying can realize the rapid and low-cost anode preparation for high-performance MS-SOFC.
      PubDate: 2024-05-31
       
  • Trade-Off Among Cavitation Erosion Resistance, Corrosion Resistance, and
           Antifouling Properties of HVOF-Sprayed WC-CoCr Coating via Adding
           Stainless Steel and Copper

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      Abstract: Abstract This work investigated the trade-off among cavitation erosion resistance, corrosion resistance, and antifouling properties in HVOF-sprayed WC-10Co4Cr coatings. By adding 316L stainless steel (316L) and copper to WC-10Co4Cr coatings, this work aimed to enhance their antifouling ability while maintaining their cavitation erosion and corrosion resistances, presenting a comprehensive evaluation of the modified coatings, including their microstructure, hardness, fracture toughness, and resistance to cavitation erosion, corrosion, and biofouling. The results revealed that Cu addition significantly improved the antifouling property but at a cost of the compromised cavitation erosion and corrosion resistances. In contrast, 316L enhanced the cavitation erosion and corrosion resistances but did not effectively improve the antifouling property. The dual addition of Cu and 316L demonstrated a balanced performance in all three aspects. This research contributed to the development of HVOF-sprayed WC-CoCr coatings suitable for marine environments, suggesting further optimization possibilities by altering Cu and 316L contents.
      PubDate: 2024-05-30
       
  • Study on the Effect of Laser Remelting Energy Density on the
           Microstructure and Wear Resistance of Fe-Based Alloy Coatings Fabricated
           by Laser Cladding

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      Abstract: Abstract In this work, Fe-based alloy coatings were prepared on the surface of ductile iron by laser cladding. To improve its wear resistance and consider the economic and time cost of other post-treatment processes, laser remelting was chosen to strengthen the coatings. The effect of laser remelting energy density (0−11.45 J/mm2) on the phase composition, microstructure evolution, hardness, and wear resistance of the coatings were investigated. The results show that the coating consists of γ-(Fe, Cr) and carbides and that remelting energy density has little effect on its phase composition. After remelting, the hardness uniformity of the coating was significantly improved, but increasing the remelting energy density had little effect on it. The hardness and wear resistance of the coatings were inversely related to remelting energy density. At a low remelting energy density of 5.66 J/mm2, the hardness and wear mass loss of the coating were 111.49% and 54.36% of the original coating, respectively. The mechanism for the improved hardness and wear resistance is the microstructure refinement induced by laser remelting. Increased remelting energy density reduces the microstructure refinement of the coating, but the coatings still showed good hardness and wear resistance due to the diffuse distribution of carbides at higher remelting energy density conditions of 9.43-11.45 J/mm2.
      PubDate: 2024-05-30
       
  • Process Optimization and Influencing Factors of Supersonic High-Energy
           Plasma Spraying of Al2O3-PF Composite Coatings on Polymer Matrix Composite
           Surface

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      Abstract: Abstract A high-performance Al2O3-PF composite coating was prepared on the surface of polymer matrix composite materials using supersonic high-energy plasma spraying technology. The bonding strength between the composite coating and the matrix was used as the evaluation index. The spraying process parameters were optimized using orthogonal experimental design method. Subsequently, the optimal process was verified based on single-factor experimental method, further exploring the influence mechanism of Ar flow rate, spraying current, spraying voltage, and second powder feeding position on the composite coating. Analysis shows that spray voltage, Ar flow rate, and spray current have a significant impact on the experimental results and are the main influencing factors; the second powder feeding position has a relatively small impact on the experimental results and is a secondary influencing factor.
      PubDate: 2024-05-30
       
  • The Microstructure, Surface Topography and Wear Resistance of Cold-Sprayed
           (Cr3C2-25(Ni20Cr))-(Ni-graphite) Composite Coatings Modified by Diode
           Laser Treatment

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      Abstract: Abstract Cold-sprayed composite coatings have several advantages; however, some properties, such as hardness and abrasion resistance, are lower than those in plasma- or HVOF-sprayed deposits. This work showed that the use of surface diode laser processing allowed the development of (Cr3C2-25(Ni20Cr))-(Ni-graphite) cermet coatings with good adhesion to the steel substrate, and increased properties in the near-surface zone, below which the properties of cold-sprayed coatings were retained. Studies of the microstructure in the micro/nanoscale of the laser-treated coatings showed strong grain refinement after surface treatment. Cr7C3 carbide of various shapes and sizes was formed in the structure; while, a several hundred nanometre layer of Cr2O3 oxide appeared on the coating surface. The changes occurring in the microstructure have resulted in increased mechanical and tribological properties of the laser-treated zone of deposits.
      PubDate: 2024-05-29
       
  • Study on the Wear and Corrosion Resistance of CoCrFeNiTi0.8-xcBN Laser
           Cladding Coatings

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      Abstract: Abstract This work aimed to explore the effect of cBN (cubic boron nitride) content on the microstructures and wear-corrosion resistance of the CoCrFeNiTi0.8-xcBN (x = 0, 2, 4, 6 wt.%) particle-reinforced high-entropy alloy coatings. Laser cladding technology was used to prepare the coatings on TC18 substrate. The microstructures, volume wear rates and polarization curves were characterized. The results showed that the CoCrFeNiTi0.8-xcBN coatings had an optimal forming quality under the process parameters: laser power of 1500 W, scanning rate of 12 mm/s and overlapping rate of 60%. As the cBN content increased, plenty of TiN and TiB2 hard particles formed in situ in the coatings, significantly improved the wear resistance. As a result, the volume wear rate of CoCrFeNiTi0.8-6cBN was only 4.0% and 16.5% of that of TC18 substrate and CoCrFeNiTi0.8 coating, respectively; the wear mechanism changed from adhesive wear + oxidative wear to abrasive wear + oxidative wear gradually. Moreover, CoCrFeNiTi0.8-xcBN coatings can effectively inhibit the infiltration of corrosive media by dense organizational characteristics and the physical barrier effect of oxidation-protective films. After 480 h of neutral salt spray (NSS) test, the CoCrFeNiTi0.8-xcBN coatings exhibited excellent corrosion resistance, both of the appearance and protection rating reached level 10. Therefore, it can be used as the wear-corrosion-resistant coating for the TC18 substrate in a NSS environment.
      PubDate: 2024-05-23
       
  • Influence of Different Copper Feedstock Powders on the Microstructure and
           Corrosion Resistance of Coatings Prepared by Cold Gas Spray

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      Abstract: Abstract The purpose of this study is to investigate the effect of copper powder oxidation on the deposition efficiency, microstructure, wear and corrosion resistance. The gas-atomized copper powders in the as-received (Cu-Safina and Cu-FST) and oxidized states (Cu-treat, oxidized in air, 25 °C for 5 months; Cu-treat1, oxidized at 100 °C for 1 h; and Cu-treat2, oxidized at 200 °C for 1 h) were used to prepare the coatings by cold gas spray (CGS). XPS analysis detected Cu2O and CuO for all feedstock powders, increasing for oxidized ones. The deposition efficiency and thickness of the coatings followed the order: Cu-Safina > Cu-FST > Cu-treat1 > Cu-treat > Cu-treat2. For oxidized coatings, SEM images showed more defected microstructure, increase in pores, and microcracks. Cu-FST coating showed a sliding wear rate of (0.13 ± 0.01) × 10-4 mm3 N−1 m−1), and abrasive wear rate of (3.2 ± 0.2) × 10−4 mm3 N−1 m−1. Gas-atomized powder coatings showed a better corrosion resistance performance. The electrolyte did not reach the substrate/coating interface for t ≥ 700 h and the coatings resisted for 2000 h in salt fog tests. However, oxidized coatings showed low corrosion resistance due to the presence of cracks and defects, and the coating/substrate was severely damaged after ≈100 h in 3.5wt.%NaCl solution.
      PubDate: 2024-05-22
       
  • Devitrification-Induced Tailoring of Microstructure and Strength in
           Aluminum High-Entropy Alloy Powder for Cold Spray Deposition

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      Abstract: Abstract The development of high-strength cold spray deposits using amorphous/nanocrystalline aluminum high-entropy alloy (Al HEA) powder is hindered by the lack of understanding of correlations between powder microstructure and its deformation behavior. In this study, gas-atomized Al HEA powder (Al90.05-Y4.4-Ni4.3-Co0.9-Sc0.35 at.%) is devitrified at 298, 345, 362, and 450 °C to optimize strength and deformation for cold spraying. Devitrification-induced atomic rearrangement developed equiaxed Al grains and Al3Ni and Al3Sc precipitates. The amorphous content, growth of grains, hard precipitates, and reduced dislocation density increased the hardness by 16% to 515 HV at 298 °C and decreased the hardness by 55% to 190 HV at 450 °C. The compressive strength of Al HEA powder increased by 5% to 1559 MPa at 298 °C and decreased by 49% to 760 MPa at 450 °C. To enhance the limited sprayability of Al HEA powder, compressive strength is used to model optimized cold spray process maps. Helium gas with temperatures from 300 to 800 °C and a pressure of 40 bar can produce cold spray deposits with deposition efficiency greater than 70%. The scientific insights acquired from the present study provide a gateway toward developing novel lightweight and high-strength aluminum alloy deposits, thus marking an advancement in cold spray technology.
      PubDate: 2024-05-21
       
  • Effect of Laser Remelting on the Microstructural and Mechanical Properties
           of High-Velocity Oxy-Fuel (HVOF)-Sprayed WC-NiCr Coating

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      Abstract: Abstract WC-based coatings are found efficient in providing excellent tribological properties to the structures and components subjected to harsh wear and erosion environments. High-velocity oxy-fuel (HVOF) spraying is known as one of the best techniques to deposit such coatings. However, there still exists scope for further microstructural refinement and improvement in the mechanical properties of the as-sprayed HVOF coatings. Laser remelting has proven to be an appropriate process to achieve such improvement in as-sprayed WC-based coatings. In the current investigation, laser remelting at two different power levels was done on the HVOF-sprayed WC-NiCr coating on stainless steel specimens. The post-processed coatings were analyzed using a scanning electron microscope, x-ray diffraction, x-ray photoelectron spectroscopy, and ImageJ software to study the microstructural changes. Microhardness and surface roughness measurements were also performed to study the mechanical changes. The laser remelting resulted in a smoother coating surface, having lower porosity, lower surface roughness, and higher microhardness as compared to the as-sprayed HVOF coatings. The highest reduction in the porosity was found to be around 72%, whereas, an increment of around 21% in the microhardness was witnessed. These two parameters are crucial for the tribological performance of the coatings. The current study also gives direction to further study these remelted coatings in tribological conditions.
      PubDate: 2024-05-21
       
  • High-Temperature Corrosion Characterization of Ni-Al Laser Cladding: The
           Effect of Al Content and Fe

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      Abstract: Abstract To further enhance the high-temperature corrosion resistance of boiler tubes for improved power generation efficiency of biomass and waste-to-energy plants, Ni-Al cladding layers with Al contents of 2, 4, 6 and 8 wt.% were prepared by laser cladding technique. The corrosion characteristics of Ni-Al cladding layers in two salts (NaCl-KCl and NaCl-KCl-K2SO4, at 650 °C) were investigated. The critical Al content of Ni-Al cladding layers with better corrosion resistance was determined, and the effect of Fe dilution from the substrate on the corrosion products was studied. In NaCl-KCl, the corrosion rates of all cladding layers were high at the initial stage. As the corrosion proceeded, a continuous and dense Al2O3 scale was gradually formed on the Ni-8Al surface, while the other three cladding layers failed to be generated. Therefore, Ni-8Al exhibited the best corrosion resistance. However, in NaCl-KCl- K2SO4, Al2O3 was continuously dissolved due to the “basic fluxing” mechanism and Ni-8Al underwent significantly severe corrosion. Fe oxides were detected in the corrosion products of all cladding layers. Since Fe ions diffuse more easily through the Al2O3 scale, Fe oxides were in the outermost layer and were prone to spalling, which affected the corrosion resistance.
      PubDate: 2024-05-20
       
  • Effect of WC-10Co-4Cr Reinforcement Amount on Wear and Corrosion
           Resistance of Fe-Based Amorphous Coatings

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      Abstract: Abstract WC-10Co-4Cr/Fe-based amorphous composite coatings with different WC-10Co-4Cr powder contents (0-12 wt.%) were prepared on C45 steel by plasma spraying. The microstructure, hardness, wear resistance and corrosion resistance of the WC-10Co-4Cr/Fe amorphous composite coatings were studied. The results show that, with the increase of WC-10Co-4Cr mass fraction, the microhardness and the porosity decrease firstly and then increase slightly. The study of the wear resistance shows that the wear resistance of the WC-10Co-4Cr/Fe-based amorphous composite coatings is higher than that of the single iron-based amorphous coating, and the wear resistance of the 9 wt.% WC-10Co-4Cr/Fe-based amorphous composite coating is the highest, which is about 1/4 of the wear rate of the sing-based amorphous coating. In the whole wear process, fatigue wear is dominant, accompanied by oxidation wear. Furthermore, electrochemical test results indicate that the corrosion resistance of the WC-10Co-4Cr/Fe-based amorphous composite coatings is higher than that of the single iron-based amorphous coating. The polarization resistance of the 9 wt.% WC-10Co-4Cr/Fe-based amorphous composite coating is the highest, about 7975.94 ± 375.42 Ω cm2, which is about 3 times that of the single iron-based amorphous coating (2547.84 ± 256.05 Ω cm2).
      PubDate: 2024-05-20
       
  • Slurry Abrasion and Dry Sliding Behavior of High-Velocity Oxy-Fuel (HVOF)
           Sprayed WC-12Co and WC-10Co-4Cr Coatings on EN8 Tillage Material

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      Abstract: Abstract This research focuses on enhancing the wear resistance of EN8 steel, commonly used in agricultural implements by applying WC-12Co and WC-10Co-4Cr coatings using the high-velocity oxy-fuel (HVOF) spraying technique. The microstructural characterization, EDS mapping, microhardness, fracture toughness, slurry abrasion, and dry sliding of all coated and uncoated samples were evaluated. Results demonstrate that coated specimens outperform the uncoated EN8 steel in terms of wear resistance. Slurry abrasion tests reveal that the coatings hardness and fracture toughness contribute to their excellent performance. In dry sliding tests, the coated specimens exhibit lower friction coefficients and less mass loss, further emphasizing their better wear resistance. Further, wear mechanisms were found to be different between the materials, with EN8 steel exhibiting ductile wear, primarily due to plastic deformation and chipping, while the coated specimens display brittle wear characteristics, with the detachment of hard coating material and abrasive interactions contributing to wear.
      PubDate: 2024-05-20
       
  • Comparative Study on the Microstructure and Properties of 304 Stainless
           Steel Coatings Prepared by High-Velocity Oxygen Fuel Spraying and Air
           Plasma Spraying

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      Abstract: Abstract The 304 stainless steel coatings were applied to a 6061-T6 aluminum alloy substrate using high-velocity oxygen fuel spraying (HVOF) and air plasma spraying (APS) techniques. The objective of this study was to investigate the microstructure, hardness, tribological, and corrosion properties of the coatings produced by these two different processes. The findings revealed a clear relationship between the molten state of particles and the porosity, oxygen content, and microstructure of the stainless steel coatings. It was observed that the HVOF coating had higher quantities of austenite and martensitic, while the APS coating exhibited an increased presence of ferrite. These distinctions were directly responsible for the enhanced hardness and improved wear resistance observed in the HVOF coating. More specifically, the HVOF coating demonstrated a twofold increase in hardness (493.2 Hv0.1) compared to the APS coating. Its wear resistance was also significantly improved, with a sevenfold increase (0.36 × 10−4 mm3 N−1 m−1). Electrochemical tests were performed in a 3.5 wt.% aCl solution to assess the corrosion behavior of the coatings. The results clearly indicated that the HVOF coating provided superior corrosion protection compared to the APS coating.
      PubDate: 2024-05-20
       
  • Microstructure and Tribological Properties of In situ-Synthesized
           WC-Reinforced Ni60 Coatings Prepared by Laser Cladding with Different
           Scanning Rates

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      Abstract: Abstract To reduce the decomposition of WC in the composite coatings so as to improve the wear resistance, in situ-synthesized WC-reinforced Ni60 coatings were prepared by laser cladding with different laser scanning rates. The results showed that the composite coating was dense and crack-free and mainly composed of Fe0.64Ni0.36, WC and Cr2N phases. More importantly, the in situ-synthesized WC was uniformly distributed in the matrix phase and the composite coating showed the lowest wear rate of 2.82 × 10−6 mm3 N−1 m−1 when the laser scanning rate was 200 mm min−1. The improvement in wear resistance of the coating was ascribed to the formation of WC with high microhardness around 2100 HV0.1 and good bonding with the matrix phase.
      PubDate: 2024-05-20
       
  • A Novel Amorphous Alloy Coating for Elevating Corrosion Resistance of X70
           Pipeline Steel

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      Abstract: Abstract In the current investigation, X70 pipeline steel plate was welded using submerged-arc welding. Thereafter, a (Fe0.5Ni0.2)61Cr9Co6Si1.5B17.5Nb5 amorphous alloy coating with a thickness of 400 ± 30 μm was successfully deposited on the surface of welded X70 pipeline steel by high velocity oxy-fuel (HVOF). The corrosion resistance of the substrate and coating in acidic environments was discussed, and the corrosion mechanisms were analyzed. The results show that the coating is completely amorphous with a dense microstructure, showing a typical thermal spray laminar flow-like structure. The corrosion potential (Ecorr) and self-corrosion current density (Icorr) are − 396 mV and 2.061 × 10−6 A/cm2, respectively. The Ecorr of all coatings is better than that of substrate. The coating A, where the BM zone is located, has the largest capacitance resistance arc radius and the smallest Icorr (1.427 × 10−7 A/cm2), which provides the best corrosion resistance. The maximum Icorr of the coating (Icorr = 2.320 × 10−7 A/cm2) is one order of magnitude lower than the minimum Icorr of the substrate (Icorr = 2.061 × 10−6 A/cm2), which indicates that the coating has better corrosion resistance than the substrate. The corrosion mechanism of the coating in H2SO4 solution is active dissolution of metal elements in the coating (initial stage) and passivation film protection coating (later stage). This work provides a very valuable idea to solve the problem of corrosion failure of X70 pipeline steel.
      PubDate: 2024-05-17
       
  • Cold-Sprayed W/B4C/Al Coatings for Neutron and γ-Rays Absorption

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      Abstract: Abstract With the widespread use of nuclear energy, the storage of surplus spent fuel has emerged as a critical issue that needs to be solved, especially for the efficient absorption of neutron radiation and secondary γ-rays generated by spent fuel produced when 10B absorbs neutrons. In this work, B4C/Al and W/B4C/Al coating were prepared on 316 L stainless steel by cold spraying. The microstructure and tensile properties of the coatings were investigated. The performance of the thermal neutron and secondary γ-rays absorption of the two coatings were simulated using the Monte Carlo approach. The results indicated that, compared to the B4C/Al coating, the W/B4C/Al coating exhibited better mechanical properties due to the tamping effect of the W particles. In addition, the secondary γ-rays absorption property was improved due to the addition of W.
      PubDate: 2024-05-16
       
  • Corrosion and Wear Resistance of HVOF-Sprayed Ni-Cr-Co Multi-principal
           Element Alloy Coating on Copper Plate

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      Abstract: Abstract The development of protective coatings on copper alloy surfaces represents a critical research direction to enable the widespread industrial application of copper alloys. To improve the corrosion resistance and wear resistance of the copper alloy plates, a Ni-Cr-Co-based multi-principal element alloy coating was prepared via high-velocity oxygen fuel (HVOF). Then, the microstructure, corrosion resistance, and wear resistance of the Ni-Cr-Co coating and the electroplated NiCo coating were analyzed comparatively. The research results show that the phases of the Ni-Cr-Co coating contained face-centered cubic (FCC) solid solution, CrB and M23C6. The NiCo coating exhibited a single-phase FCC solid solution structure. Compared to the NiCo coating, the corrosion current density of the Ni-Cr-Co coating was reduced by 92.1% in NaF solution. A highly protective passive film was formed on the Ni-Cr-Co coating, and its low ΣCSL grain boundary proportion reached as high as 25.7%. Therefore, the Ni-Cr-Co coatings demonstrated superior corrosion resistance. The scratch wear coefficient of the Ni-Cr-Co coating was only 51.9% of that of the NiCo coating, due to the synergistic strengthening of the matrix and hard second phase. This research offers technical support and a theoretical basis foundation for the development of coatings on copper alloys with excellent corrosion resistance and wear resistance.
      PubDate: 2024-05-16
       
 
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  Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

THERMODYNAMICS (30 journals)

Showing 1 - 29 of 29 Journals sorted alphabetically
Advances in Heat Transfer     Full-text available via subscription   (Followers: 26)
Applied Thermal Engineering     Hybrid Journal   (Followers: 41)
Araucaria. Revista Iberoamericana de Filosofía, Política y Humanidades     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 9)
Chemical Thermodynamics and Thermal Analysis     Open Access   (Followers: 7)
Condensed Matter Physics     Open Access   (Followers: 2)
Diffusion Foundations     Full-text available via subscription   (Followers: 4)
European Journal of Mechanics - B/Fluids     Hybrid Journal   (Followers: 5)
Experimental Heat Transfer     Hybrid Journal   (Followers: 17)
Experimental Thermal and Fluid Science     Hybrid Journal   (Followers: 35)
Fluids     Open Access   (Followers: 1)
Heat and Mass Transfer     Hybrid Journal   (Followers: 28)
Heat Transfer Engineering     Hybrid Journal   (Followers: 37)
High Temperature     Hybrid Journal   (Followers: 2)
HTM Journal of Heat Treatment and Materials     Full-text available via subscription   (Followers: 3)
International Journal of Thermodynamics     Open Access   (Followers: 11)
International Journal of Thermophysics     Hybrid Journal   (Followers: 7)
Journal of Thermodynamics & Catalysis     Open Access   (Followers: 6)
Journal of Chemical Thermodynamics     Hybrid Journal   (Followers: 4)
Journal of Low Temperature Physics     Hybrid Journal   (Followers: 7)
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