Surface & Coatings Technology最新文献_第2页

Adhesion of thermal barrier coatings: Influence of the bond coat application technique

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-11 DOI: 10.1016/j.surfcoat.2025.132031

Carlos R.C. Lima , Victor Crespo , Jaume Nin , Genis Clavé , Sergi Dosta

引用次数: 0

Predictive model for SiO2 film properties using plasma optical emission spectra based on machine learning

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-11 DOI: 10.1016/j.surfcoat.2025.132029

Sukma Wahyu Fitriani , Kunihiro Kamataki , Yuma Yamamoto , Yushi Sato , Yousei Kurosaki , Kazunori Koga , Masaharu Shiratani

{"title":"Predictive model for SiO2 film properties using plasma optical emission spectra based on machine learning","authors":"Sukma Wahyu Fitriani , Kunihiro Kamataki , Yuma Yamamoto , Yushi Sato , Yousei Kurosaki , Kazunori Koga , Masaharu Shiratani","doi":"10.1016/j.surfcoat.2025.132029","DOIUrl":"10.1016/j.surfcoat.2025.132029","url":null,"abstract":"<div><div>Optical emission spectroscopy (OES) is widely used in the semiconductor industry for monitoring and controlling the SiO<sub>2</sub> deposition process without interfering the plasma. However, it is quite challenging for tetraethylorthosilicate (TEOS)-based plasma due to its complex emission spectrum. Furthermore, oxygen atom density and oxygen ion flux become important parameters when oxygen is present in the deposition process. In this study, we propose an approach that expresses the SiO<sub>2</sub> deposition rate using a mathematical model based on physical mechanisms by leveraging plasma emission spectrum data and machine learning. A capacitively coupled plasma generated by RF power of 13.56 MHz was employed to deposit SiO<sub>2</sub> films with varying plasma power, working gas pressure, and gas ratio of TEOS/oxygen/argon. Furthermore, a gradient boosting regression tree model was used to predict the deposition rate using plasma emission spectrum, and the model prediction result was then interpreted using SHapley Additive exPlanation (SHAP). The SHAP result revealed that the deposition rate is significantly influenced by OH (308.95 nm), CO (560.84 nm), OI (844.72 nm), ArI (420.08 nm), and ArII (487.89 nm). It is suggested that these species are correlated to the TEOS dissociation process through electron impact, reaction with oxygen atoms and argon metastable. Furthermore, we used this result to derive a mathematical model for determining the SiO<sub>2</sub> deposition rate, indicating that OES could be used to monitor the plasma output under variation process parameters.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132029"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructural stability of Ti-TiC satellites in aerosol cold-sprayed titanium coatings 气溶胶冷喷涂钛涂层中 Ti-TiC 卫星的微观结构稳定性

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-11 DOI: 10.1016/j.surfcoat.2025.132033

H. Myalska-Głowacka , G. Kubicki , G. Cios , M. Godzierz , K. Goldsztajn , K. Kurtyka , P. Sokołowski , J. Szewczenko

{"title":"Microstructural stability of Ti-TiC satellites in aerosol cold-sprayed titanium coatings","authors":"H. Myalska-Głowacka , G. Kubicki , G. Cios , M. Godzierz , K. Goldsztajn , K. Kurtyka , P. Sokołowski , J. Szewczenko","doi":"10.1016/j.surfcoat.2025.132033","DOIUrl":"10.1016/j.surfcoat.2025.132033","url":null,"abstract":"<div><div>It has recently been proposed to modify titanium based cold-spray coatings with ceramic particles to improve their properties. One of the ideas to improve wear resistance is adding carbides into the coatings. This work describes the changes in microstructure and tribological properties induced by incorporating the Ti-TiC satellite into Ti coatings.</div><div>A powder mixture consisting of pure titanium and 20 wt% of Ti-TiC satellite powder was deposited along with pure titanium on an aluminum substrate using the Aerosol Cold Spray process. Scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) were employed for the microstructural characterization of deposited coatings. The sin<sup>2</sup>ψ method of XRD was also used to measure residual stresses in the coatings. The dry sliding tribological behavior of the coatings was evaluated via ball-on-disk tests against WC-Co counterbody. The experiments were conducted at room temperature, with a normal force of 10 N, a sliding distance of 100 m, and a sliding speed of 5 mm/s. The wear rates of the coatings and of the WC-Co counterparts were measured separately, and friction coefficients were recorded during each test.</div><div>Microstructural characterization using SEM and EBSD confirmed that in-situ formed TiC particles in the satellite powder, obtained through the CVD process, were embedded in the aerosol cold-sprayed coatings. The Ti-TiC satellite particles did not undergo significant changes during the spraying process compared to pure Ti powder. The presence of Ti-TiC satellites also resulted in an increase of microhardness, and dry sliding wear resistance. The absolute values of normal stresses along and perpendicularly to the torch movement direction decreased significantly when Ti-TiC satellite powder was added.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132033"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Fe3Al intermetallic cold gas spray coatings: Microstructural characterization

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-11 DOI: 10.1016/j.surfcoat.2025.132032

Sergi Dosta , Genís Clavé , Lorena Betancor-Cazorla , Camila Barreneche , Anna Martín-Vilardell

{"title":"Optimization of Fe3Al intermetallic cold gas spray coatings: Microstructural characterization","authors":"Sergi Dosta , Genís Clavé , Lorena Betancor-Cazorla , Camila Barreneche , Anna Martín-Vilardell","doi":"10.1016/j.surfcoat.2025.132032","DOIUrl":"10.1016/j.surfcoat.2025.132032","url":null,"abstract":"<div><div>Cold Gas Spray (CGS) is increasingly applied in industry and becoming even more important in advanced applications. This study focuses on the use of CGS process optimization of metal transitional aluminides, specifically Fe<sub>3</sub>Al. These low-cost materials have high resistance to sulfidation and carburizing atmospheres, as well as excellent oxidation resistance at high temperatures. Therefore, this study aims to deposit Fe<sub>3</sub>Al powders via CGS onto steel substrates, evaluating the use of Helium (He) and Nitrogen (N<sub>2</sub>) as carrier gases, examining the influence of particle size distribution of two powders. The coatings have been optimized by studying the splat formation and their microstructures to better understand the deposition process. The best coatings have been characterized by microstructural analysis with scanning electron microscopy and energy dispersive X-ray spectroscopy, also measuring their microhardness. The work concludes that Fe<sub>3</sub>Al coatings have been successfully deposited by CGS. Therefore, dense coatings were achieved by using both He and N<sub>2</sub> as carrier gases for the fine powder. Even so, the use of He as the carrier gas produces thicker and harder coatings, as particles reached higher velocities, allowing also to produce a good coating with the coarse powder.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132032"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing wear resistance in CSS-42L gear steel at room and elevated temperatures via electroshocking treatment

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-10 DOI: 10.1016/j.surfcoat.2025.132015

Chao Song , Guangchao Wang , Xinhao Zhao , Qingyou Han , Fei Yin

{"title":"Enhancing wear resistance in CSS-42L gear steel at room and elevated temperatures via electroshocking treatment","authors":"Chao Song , Guangchao Wang , Xinhao Zhao , Qingyou Han , Fei Yin","doi":"10.1016/j.surfcoat.2025.132015","DOIUrl":"10.1016/j.surfcoat.2025.132015","url":null,"abstract":"<div><div>The high-temperature-resistant CSS-42L gear steel is designed for service temperature of up to 500 °C and is susceptible to failures due to elevated temperature friction. This study applied electroshocking treatment (EST) to enhance the wear resistance of CSS-42L gear steel and investigate its dry friction behavior at room and elevated temperatures. Results demonstrated that EST, applied at 80 A/mm<sup>2</sup>–0.04 s, reduced the wear rate of CSS-42L at 500 °C under dry sliding wear tests conditions by 50.9 % compared to the control sample, the coefficients of friction (COF) decreasing from approximately 0.58 to 0.35. Electron backscatter diffraction (EBSD) analysis indicated static recrystallization post-EST, with the average ferrite size reducing from 5.889 μm to 5.126 μm, and the plastic deformation layer formed under elevated temperature friction conditions thickened from 10 μm to 20 μm. Scanning electron microscopy (SEM) results showed that EST significantly enhanced specific deformation energy, with the wear mechanism on the contact surface transitioning from plastic shear strain to plastic deformation, and the type of wear evolving from abrasive wear to oxidative wear. These performance improvements were attributed to the synergistic effects of refined structural size, enhanced specific deformation energy, and decreased dislocation density. This study provides novel insights into the use of EST to improve the wear resistance of CSS-42L gear steel, particularly under high-temperature conditions, offering valuable data for aerospace applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"503 ","pages":"Article 132015"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene oxide reinforced NiPCo composite coatings: Optimum graphene oxide content for improved anticorrosion and wear resistance

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-10 DOI: 10.1016/j.surfcoat.2025.132021

Melisa Köse, Sezer Tan, Mehmet Uysal

{"title":"Graphene oxide reinforced NiPCo composite coatings: Optimum graphene oxide content for improved anticorrosion and wear resistance","authors":"Melisa Köse, Sezer Tan, Mehmet Uysal","doi":"10.1016/j.surfcoat.2025.132021","DOIUrl":"10.1016/j.surfcoat.2025.132021","url":null,"abstract":"<div><div>Graphene oxide (GO)-reinforced NiPCo composite coatings were fabricated on steel substrates via pulse electrodeposition to investigate the effects of GO content on coating properties. The study examined how varying GO concentrations influenced morphology, chemical composition, growth mechanisms, mechanical properties, wear resistance, electrochemical stability, and wetting behavior. GO incorporation led to significant improvements in both corrosion and wear resistance. The refined microstructure enhanced nucleation during electrodeposition, contributing to superior performance. The optimized value of GO concentrations was 100 mg/L, suggesting the superior properties for all properties at only one value (100 mg/L GO), not only for friction coefficient and wear rate, but for Corrosion resistance. Wear testing revealed substantial reductions in both the friction coefficient (0.3) and wear rate (∼6 × 10<sup>−6</sup> mm<sup>3</sup>/Nm), corresponding to ∼33 % and ∼ 79 % decreases, respectively, under a 2 N load. These improvements were attributed to the uniform distribution of GO within the coating matrix, enhancing load-bearing capacity and self-lubricating effects. Additionally, the worn surface showed greater smoothness and uniformity, promoting stable sliding. Corrosion resistance was assessed through electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. Corrosion rates decreased with increasing GO content, reaching optimal performance at 100 mg/L GO concentration. Density Functional Theory (DFT) analysis confirmed the formation of a corrosion-resistant passive oxide layer, with the NiPCo/GO (100 mg/L) coating displaying the highest impedance value (7700 Ω·cm<sup>2</sup>), indicating superior corrosion resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132021"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silica sacrificing effect against water vapor in multilayer environmental barrier coatings

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-10 DOI: 10.1016/j.surfcoat.2025.132027

Hongkang Ou, Kaifei Fan, Lingxiang Guo, Yuyu Zhang, Bing Liu, Ting Xu, Jia Sun, Qiangang Fu

{"title":"Silica sacrificing effect against water vapor in multilayer environmental barrier coatings","authors":"Hongkang Ou, Kaifei Fan, Lingxiang Guo, Yuyu Zhang, Bing Liu, Ting Xu, Jia Sun, Qiangang Fu","doi":"10.1016/j.surfcoat.2025.132027","DOIUrl":"10.1016/j.surfcoat.2025.132027","url":null,"abstract":"<div><div>An environmental barrier coating (EBC) with the alternative multilayer structure was fabricated by plasma-sprayed ZrO<sub>2</sub>-modified Yb<sub>2</sub>SiO<sub>5</sub> and MoSi<sub>2</sub> as sublayers. The water-vapor corrosion test at 1500 °C is up to 100 h revealing a structure transformation from ZrO<sub>2</sub>-Yb<sub>2</sub>SiO<sub>5</sub> coating in which MoSi<sub>2</sub> was the sublayer to ZrO<sub>2</sub>-Yb<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> coating in which SiO<sub>2</sub> was the sublayer. By sacrificing the SiO<sub>2</sub> phase, a structural evolution emerged from dissolved SiO<sub>2</sub> to lamellar pores with volatilization of SiO<sub>2</sub>. Layer-by-layer spallation avoided the complete delamination of the composite coating, and the sacrificing of SiO<sub>2</sub> can inhibit the inward invasion of oxygen and water vapor. The enhanced water vapor corrosion resistance and oxygen barrier effect of the multilayer coating contributed to the thin TGO-thickness of alternative multilayer EBC, as well as the long service life.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132027"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure and wear resistance of plasma nitrocarburized high deformed and controlled hot rolled low carbon bainitic steel

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-10 DOI: 10.1016/j.surfcoat.2025.132028

João Vitor Piovesan Dalla Nora , Vinicius Waechter Dias , Victor Velho de Castro , Célia de Fraga Malfatti , Morvan Silva Franco , Alexandre da Silva Rocha

{"title":"Microstructure and wear resistance of plasma nitrocarburized high deformed and controlled hot rolled low carbon bainitic steel","authors":"João Vitor Piovesan Dalla Nora , Vinicius Waechter Dias , Victor Velho de Castro , Célia de Fraga Malfatti , Morvan Silva Franco , Alexandre da Silva Rocha","doi":"10.1016/j.surfcoat.2025.132028","DOIUrl":"10.1016/j.surfcoat.2025.132028","url":null,"abstract":"<div><div>Despite the growing industrial relevance of continuously cooled bainitic steels, the combination of plasma nitrocarburizing and HSX 130HD remains unexplored. Furthermore, no prior studies have investigated plasma treatments applied to HSX 130HD XTP® steel, which undergoes microstructural refinement through thermomechanical post-processing. This study evaluates the effects of plasma nitriding and nitrocarburizing on two bainitic steels, HSX 130HD and HSX 130HD XTP® (Xtreme Performance Technology®), with a focus on microstructural evolution, microhardness, phase formation, and wear resistance. Although both steels share the same chemical composition, the HSX 130HD XTP® variant exhibits a finer microstructure due to its thermomechanical processing. Plasma treatments were conducted using different gas mixtures, specifically N₂ (fixed at 75 vol%), H₂ (balance), and CH₄ (3 vol% and 5 vol%), at 500 °C for 6 h. The resulting microstructure, roughness, surface and profile microhardness, phase composition (determined via X-ray diffraction), friction coefficient under dry sliding, and wear resistance (evaluated through reciprocating sliding wear tests) were analyzed. The results indicate that increasing CH₄ concentration led to a reduction in white layer thickness, an increase in surface microhardness and roughness, and enhanced Fe₂-₃N phase formation for both substrates. Fe₃C formation was also observed in HSX 130HD XTP® samples treated with 5 vol% CH₄, while a lower friction coefficient was recorded for the same steel treated with 3 vol% CH₄. Although plasma nitrocarburizing proved to be effective for both steels, plasma-nitrided HSX 130HD XTP® exhibited the lowest worn volume, highlighting its superior wear resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132028"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Mo content on microstructural evolution, corrosion behavior, and friction performance of laser cladded (Fe50Mn30Co10Cr10)1−xMox coatings

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-10 DOI: 10.1016/j.surfcoat.2025.132022

Jiaye Geng , Xiaohui Yang , Guicheng Wang , Cuirong Liu , Ming Yin , Yan Li

{"title":"Effect of Mo content on microstructural evolution, corrosion behavior, and friction performance of laser cladded (Fe50Mn30Co10Cr10)1−xMox coatings","authors":"Jiaye Geng , Xiaohui Yang , Guicheng Wang , Cuirong Liu , Ming Yin , Yan Li","doi":"10.1016/j.surfcoat.2025.132022","DOIUrl":"10.1016/j.surfcoat.2025.132022","url":null,"abstract":"<div><div>In this study, (Fe<sub>50</sub>Mn<sub>30</sub>Co<sub>10</sub>Cr<sub>10</sub>)<sub>1−x</sub>Mo<sub>x</sub> (x = 0, 0.1, 0.2, 0.3 at.%) high-entropy alloy (HEA) coatings were fabricated using laser cladding technology and characterized through OM, XRD, SEM, TEM, 3D optical profilometry, microhardness tests, and electrochemical measurements. The results indicate that the addition of Mo causes an initial increase, followed by a decrease, in the martensite content of the (Fe<sub>50</sub>Mn<sub>30</sub>Co<sub>10</sub>Cr<sub>10</sub>)<sub>1−x</sub>Mo<sub>x</sub> coating microstructure. The Mo content of x = 0.1 promotes HCP martensite phase formation. However, an excessive Mo content will lead to the enrichment of Mo in the IR, causing a large amount of Fe<sub>2</sub>Mo phase to start precipitating continuously with the IR as nucleation points. The addition of these Fe<sub>2</sub>Mo phases significantly enhances the average microhardness of the coating through second-phase strengthening and solid-solution strengthening. This enables the Mo<sub>0.3</sub> coating to possess the highest microhardness of 711 HV and the lowest coefficient of friction of 0.57. Moreover, the Mo<sub>0.1</sub> coating demonstrates superior corrosion resistance, as evidenced by the lowest self-corrosion current density and the broadest passivation region. This is attributed to the protective MoO<sub>3</sub>/MoO<sub>2</sub> oxide film and the low Fe<sub>2</sub>Mo precipitate content, which together lower the Cl<sup>−</sup> erosion rate. When the Mo content is x = 0.2 at.%, the (Fe<sub>50</sub>Mn<sub>30</sub>Co<sub>10</sub>Cr<sub>10</sub>)<sub>1−x</sub>Mo<sub>x</sub> HEA coating achieves the optimal balance among hardness, wear resistance and corrosion resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"504 ","pages":"Article 132022"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An investigation on corrosion resistance of laser-cladded FeCoNiCrCu high-entropy alloy coatings based on different initial powder particle sizes

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-03-10 DOI: 10.1016/j.surfcoat.2025.132030

Ying Wang , Yuhua Peng , Changzhe He , Shuobin Chen , Jian Yu , Cheng Nie , Mao Zhang , Pan Gong , Zhigang Hu , Bin Li , Junsheng Yang

{"title":"An investigation on corrosion resistance of laser-cladded FeCoNiCrCu high-entropy alloy coatings based on different initial powder particle sizes","authors":"Ying Wang , Yuhua Peng , Changzhe He , Shuobin Chen , Jian Yu , Cheng Nie , Mao Zhang , Pan Gong , Zhigang Hu , Bin Li , Junsheng Yang","doi":"10.1016/j.surfcoat.2025.132030","DOIUrl":"10.1016/j.surfcoat.2025.132030","url":null,"abstract":"<div><div>This study comprehensively investigates the corrosion mechanism of laser-cladded FeCoNiCrCu high-entropy alloy (HEA) coatings fabricated with varying initial powder particle sizes in a 3.5 % NaCl solution. Subsequent to orthogonal experimental optimization, optimal laser cladding parameters were obtained to generate fine coatings with exceptional quality. It's noteworthy that finer initial powder particles possess higher specific surface energy, promoting the formation of coatings with fewer defects. Aside from that, steady increases in corrosion current density and decreases in corrosion potential were observed with coarser initial powder particles, accompanied by lower charge transfer resistance. Corrosion preferentially initiates at surface defects, with more severe defects directly degrading corrosion resistance. The Cu accumulation at these defects generates a less extensively protective passivation film, which hinders the formation of Cr oxides. As evidently demonstrated by XPS analysis, smaller powder particles form protective films with more Cr oxides and fewer Cu oxides in comparison with those formed by larger particles. To sum up, coatings prepared from finer initial powder particle sizes display superior corrosion resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"503 ","pages":"Article 132030"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0