Surface & Coatings Technology最新文献_第2页

Effect of stress on hot corrosion behavior of CVD aluminide coatings on Mar-M247 superalloy in the environment of humid air-Na2SO4-NaCl 应力对湿空气- na2so4 - nacl环境下CVD铝化物涂层Mar-M247高温合金热腐蚀行为的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-18 DOI: 10.1016/j.surfcoat.2025.132413

Qi Hu , Shujiang Geng , Jinlong Wang , Fuhui Wang , Qingyun Sun , Siyao Xia , Yong Wu

{"title":"Effect of stress on hot corrosion behavior of CVD aluminide coatings on Mar-M247 superalloy in the environment of humid air-Na2SO4-NaCl","authors":"Qi Hu , Shujiang Geng , Jinlong Wang , Fuhui Wang , Qingyun Sun , Siyao Xia , Yong Wu","doi":"10.1016/j.surfcoat.2025.132413","DOIUrl":"10.1016/j.surfcoat.2025.132413","url":null,"abstract":"<div><div>Aluminide coatings were deposited on Mar-M247 alloys using the chemical vapor deposition (CVD) process. The effect of stress loading on hot corrosion behavior of Mar-M247 alloy with aluminide coating in the humid air-Na<sub>2</sub>SO<sub>4</sub>-NaCl environment at 750 °C was investigated. The results revealed that stress induced more defects (e.g., cracks) near the scale/alloy (coating) interface and promoted the inward diffusion of corrosive media (e.g., S), which in turn accelerated the corrosion of both the alloy and coating. The scale thickness and internal corrosion penetration depth also significantly increased compared to the stress-free case. Nevertheless, the aluminide coating still effectively protected the alloy. The detrimental impact of stress on its corrosion resistance was less pronounced than that on the alloy, confirming its potential as a stress-tolerant protective system. This work provides critical insights into designing stress-resistant coatings for gas turbine components operating in aggressive environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132413"},"PeriodicalIF":5.3,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321479","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

Enhanced control of cathode arcing during sputter deposition of insulating films 加强了对溅射沉积绝缘膜过程中阴极电弧的控制

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-17 DOI: 10.1016/j.surfcoat.2025.132409

Gayatri Rane , Philipp Dürrenfeld , Uwe Krause , Denis Shaw

{"title":"Enhanced control of cathode arcing during sputter deposition of insulating films","authors":"Gayatri Rane , Philipp Dürrenfeld , Uwe Krause , Denis Shaw","doi":"10.1016/j.surfcoat.2025.132409","DOIUrl":"10.1016/j.surfcoat.2025.132409","url":null,"abstract":"<div><div>Cathode arcing during sputter deposition generates debris, induces coating defects, and risks damaging targets, thereby disrupting industrial processes. Advanced power supplies mitigate these challenges through pulsed power delivery and tailored arc handling; however, their combined efficacy remains underexplored. Here, we investigate two pulsed power configurations—bipolar pulsed (BP) and dynamic reverse pulsing (DRP®)—and their impact on arcing during the reactive sputtering of aluminium oxide in an industrial coater. By systematically varying arc detection and suppression parameters, we quantify arc energies across a robust dataset, revealing how these strategies synergistically minimise arc-induced disruptions. Our findings demonstrate that with optimised power delivery mode, paired with precise arc handling, leads to significant impact on arc energy which can improve process stability and coating quality. These results provide actionable insights into improving the reliability and scalability of sputter deposition, with implications for the advanced manufacturing of high-performance insulating films.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132409"},"PeriodicalIF":5.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321481","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

The effect of a pack cementation coating on the oxidation of a Mo-Nb-Si-B alloy 包覆层对Mo-Nb-Si-B合金氧化的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-17 DOI: 10.1016/j.surfcoat.2025.132408

Liam F. Wood, John H. Perepezko

{"title":"The effect of a pack cementation coating on the oxidation of a Mo-Nb-Si-B alloy","authors":"Liam F. Wood, John H. Perepezko","doi":"10.1016/j.surfcoat.2025.132408","DOIUrl":"10.1016/j.surfcoat.2025.132408","url":null,"abstract":"<div><div>The commonly studied Mo-Si-B alloys are based upon a multiphase microstructure comprising the Mo<sub>ss</sub> + Mo<sub>5</sub>SiB<sub>2</sub> (T<sub>2</sub>) + Mo<sub>3</sub>Si (A15) phases. For structural applications, Mo-Si-B alloys must include the Mo<sub>ss</sub> phase to have adequate ductility and fracture toughness, but the T<sub>2</sub> phase provides the majority of oxidation and creep resistance. The Mo<sub>5</sub>Si<sub>3</sub> (T<sub>1</sub>) phase, having a high Si content and saturated in B, also offers good oxidation resistance but is not in equilibrium with the Mo<sub>ss</sub> and T<sub>2</sub> phases. Adding Nb destabilizes the A15 phase, enabling a eutectic reaction in a Mo-32.6Nb-19.5Si-4.7B alloy that yields the Mo<sub>ss</sub> + T<sub>1</sub> + T<sub>2</sub> phases, and is thermally stable to 1925 °C. The oxidation behavior of the three-phase alloy was conducted by thermogravimetric analysis (TGA) at temperatures between 700 °C-1300 °C and showed a 28 mg/cm<sup>2</sup> mass loss after 50 h at 1100 °C. The oxidation behavior was modeled using the individual phase reactions to provide a good account of the TGA results. To address the significant alloy oxidation, a Si<img>B pack cementation coating that develops a multilayer structure with an outer borosilica layer was applied to the Mo-Nb-Si-B alloy. The coated as-cast alloy exhibited a mass gain of 1 mg/cm<sup>2</sup> after 50 h at 1100 °C, and cyclic oxidation testing of the coated heat-treated alloy showed a mass loss of only 1.74 mg/cm<sup>2</sup> after 23 cycles at 1300 °C, demonstrating robust oxidation resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132408"},"PeriodicalIF":5.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366164","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

Residual stresses induced by Inconel 718 cold gas repair spray of large cavities — On the influence of the sample geometry Inconel 718大空腔冷修补喷雾引起的残余应力——试样几何形状的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-17 DOI: 10.1016/j.surfcoat.2025.132367

Florian Lang , Johannes-Christian Schmitt , Thilo Pirling , Robert Vaßen , Jens Gibmeier

{"title":"Residual stresses induced by Inconel 718 cold gas repair spray of large cavities — On the influence of the sample geometry","authors":"Florian Lang , Johannes-Christian Schmitt , Thilo Pirling , Robert Vaßen , Jens Gibmeier","doi":"10.1016/j.surfcoat.2025.132367","DOIUrl":"10.1016/j.surfcoat.2025.132367","url":null,"abstract":"<div><div>Following previous studies regarding the suitability of cold gas spray (CGS) for repairing large cavities in flat Inconel 718 components, circular specimen geometries were produced which contained tapered cavities with a depth of 4 mm. Two sets of process parameters, a hot and a cold parameter set, were used to fill the cavities with similar material by employing CGS. To evaluate the local residual stress state in the as-sprayed condition, non-destructive high-resolution neutron diffraction experiments were performed on the SALSA instrument at the Institut Laue-Langevin (ILL). 2D mappings of residual stress distributions were determined over the cross-sectional area in the centre of the specimens. Additionally, complementary laboratory residual stress analyses were carried out. The results of residual stress analyses indicate compressive residual stresses within the repaired zone, which are balanced by tensile residual stresses in the substrate adjacent to the repair site. Supplementary metallographic investigations show a good bonding between the repair filling and the substrate as well as strongly deformed particles within the repaired region. The latter indicates significant work hardening occurring during CGS. This is further supported by the increased widths of the diffraction lines recorded by neutron diffraction analyses and micro hardness distributions.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132367"},"PeriodicalIF":5.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321545","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 properties of laser-cladded FeCoCrNiMnSix high-entropy alloy coatings with varying Si contents 不同Si含量激光熔覆feccrnimnsix高熵合金涂层的组织与性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-16 DOI: 10.1016/j.surfcoat.2025.132404

Kai Wang , Yinghang Sheng , Peng Gao , Tong Cui , Fuli Li , Zhiquan Wang , Yingying Fu , Bugong Sun , Siying Chen , Bo Li , Hongjian Guo

{"title":"Microstructure and properties of laser-cladded FeCoCrNiMnSix high-entropy alloy coatings with varying Si contents","authors":"Kai Wang , Yinghang Sheng , Peng Gao , Tong Cui , Fuli Li , Zhiquan Wang , Yingying Fu , Bugong Sun , Siying Chen , Bo Li , Hongjian Guo","doi":"10.1016/j.surfcoat.2025.132404","DOIUrl":"10.1016/j.surfcoat.2025.132404","url":null,"abstract":"<div><div>To improve the properties of the FeCoCrNiMn high-entropy alloy (HEA) coatings, FeCoCrNiMnSi<sub>x</sub> coatings were fabricated by using laser cladding technology. The influence of Si content on the microstructure, microhardness, tribological properties, and tribocorrosion performance of coatings was systematically investigated. The results revealed that the phase structure of the coatings transformed from a single FCC phase to the FCC + δ dual-phase structure with increasing the Si content. Additionally, the microstructure evolved from strip-like grains to a dense network-like morphology, demonstrating remarkable grain refinement. The microhardness and wear resistance of the coatings were improved significantly with the Si content increased, primarily due to lattice distortion, fine-grained strengthening and second-phase strengthening induced by the Si incorporation. The corrosion resistance of the coating was significantly improved by the Si addition. The newly formed passivation layer (composed of Co<sub>3</sub>O<sub>4</sub>, NiO, Cr<sub>2</sub>O<sub>3</sub>, and SiO<sub>2</sub>) on the worn surfaces played a role of protection and anti-wear during the corrosive wear process, significantly reduced both COFs and wear rates of the coatings. The Si2.0 coating exhibited the lowest self-corrosion current density (2.671 × 10<sup>−7</sup> A/cm<sup>2</sup>), the largest impedance arc radius, and the optimal corrosion resistance as well as the lowest wear rate of 0.68 × 10<sup>−7</sup> mm<sup>3</sup>/(N·m) (two order of magnitude lower than that of the 316 L substrate). The assessment of corrosion-wear interaction indicated that the mechanical wear was the main cause of material loss during corrosive wear.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132404"},"PeriodicalIF":5.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312663","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

Hardness gradient multilayer coating for enhancing tribological property of AISI 1045 steel 提高AISI 1045钢摩擦学性能的硬度梯度多层涂层

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-16 DOI: 10.1016/j.surfcoat.2025.132405

Haoran Dong , Jian Zhang , Hao Wang , Feng Tian , Qinqin Wei , Jianglin Qin , Guoqiang Luo , Qiang Shen

{"title":"Hardness gradient multilayer coating for enhancing tribological property of AISI 1045 steel","authors":"Haoran Dong , Jian Zhang , Hao Wang , Feng Tian , Qinqin Wei , Jianglin Qin , Guoqiang Luo , Qiang Shen","doi":"10.1016/j.surfcoat.2025.132405","DOIUrl":"10.1016/j.surfcoat.2025.132405","url":null,"abstract":"<div><div>Specialized equipment vehicles typically operate in complex environments, resulting in wear and failure of the AISI 1045 mild steel rotary seal shaft of the chassis. Extending the life of a material by depositing a hard coating on its surface is an efficient method, and the matrix in the previous study was cemented carbide. However, there is a significant difference in physical properties between the soft AISI 1045 steel and the hard coating, resulting in poor mechanical and tribological property. In this study, we design and prepared CrN/TiAlN multilayer coatings with hardness gradient by arc ion plating to reduce the residual stress inside the coating and enhance the tribological property. The CrN/TiAlN multilayer coatings are composed of CrN layer, CrN/TiAlN alternating layer, and TiAlN layer, in which the coating interfaces are well bonded without obvious defects. The hardness and modulus of CrN/TiAlN multilayer coatings increase with the CrN transition layer thickness, and the coating with 3.53 μm thick CrN layer has the largest hardness of 39.86 GPa, modulus of 386.72 GPa, and binding force of 24.59 N, as well as the smallest residual stress of −449.6 ± 42.3 MPa. After a 10,000 km simulated vehicle driving test, the wear depth of AISI 1045 steel is greater than 70 μm, while the surface of CrN/TiAlN coating has no obvious wear marks. Gradient design reduces the difference in physical parameters between the coating and the substrate, and the thickness increase of the CrN transition layer reduces the influence of the substrate on the coating strength, which together reduces the residual stress of the coating, improves its bonding force, and enhance tribological property. This work provides important prospects for the application of rotating sealing components in vehicles and theoretical references for improving the wear resistance of sealing surfaces.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132405"},"PeriodicalIF":5.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312664","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

Laser surface treatment of WSC coatings for selective crystallization of the TMD phase 激光表面处理WSC涂层的TMD相选择性结晶

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-16 DOI: 10.1016/j.surfcoat.2025.132403

Jorge Caessa , Albano Cavaleiro , E.L. Silva , Todor Vuchkov

{"title":"Laser surface treatment of WSC coatings for selective crystallization of the TMD phase","authors":"Jorge Caessa , Albano Cavaleiro , E.L. Silva , Todor Vuchkov","doi":"10.1016/j.surfcoat.2025.132403","DOIUrl":"10.1016/j.surfcoat.2025.132403","url":null,"abstract":"<div><div>Low friction in WSC coatings—comprising a WS<sub>2</sub> phase embedded within an amorphous carbon matrix—relies on sliding-induced WS<sub>2</sub> crystallization, process that typically requires prolonged running-in periods.</div><div>Laser treatments can alternatively induce WS<sub>2</sub> crystallization prior to sliding, without compromising the structural integrity of the amorphous carbon matrix. However, current laser processing approaches are often imprecise and lack systematic optimization of the process parameters, as most research focuses on material ablation and topography modification, rather than structural transformations.</div><div>This study systematically optimized the laser treatment of WSC coatings (∼50 at. % C) under near-ideal conditions (WSCIR1-WSCIR3) to identify key variables and thresholds governing WS<sub>2</sub> phase crystallization and amorphous carbon graphitization. We adjusted laser parameters—average power, pulse duration, and repetition rate—and refined derived quantities such as energy per pulse, fluence, and power density.</div><div>Geometrical, structural, and mechanical changes to the WSC coatings were then analyzed using optical microscopy, profilometry, ball cratering, Raman spectroscopy, X-ray diffraction, and nanoindentation. Increased laser exposure darkened and expanded the dimensions (diameter, height, depth) of the treated zones, and enhanced WS<sub>2</sub> crystallization—while maintaining coating hardness and elastic modulus due to minimal amorphous carbon graphitization.</div><div>Our findings establish critical thresholds and present a precise, scalable pathway for engineering WSC coatings, potentially eliminating the need for extended running-in periods.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132403"},"PeriodicalIF":5.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366109","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

The influence of nitridation temperature on 2D-MoS₂-assisted gallium nitride growth using molecular beam epitaxy 氮化温度对分子束外延2D-MoS 2辅助氮化镓生长的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-16 DOI: 10.1016/j.surfcoat.2025.132407

Iwan Susanto , Hong-Shan Liu , Yen-Ten Ho , Ing-Song Yu

{"title":"The influence of nitridation temperature on 2D-MoS₂-assisted gallium nitride growth using molecular beam epitaxy","authors":"Iwan Susanto , Hong-Shan Liu , Yen-Ten Ho , Ing-Song Yu","doi":"10.1016/j.surfcoat.2025.132407","DOIUrl":"10.1016/j.surfcoat.2025.132407","url":null,"abstract":"<div><div>The epitaxial growth of high-quality gallium nitride (GaN) films on two-dimensional (2D) molybdenum disulfide (MoS₂) substrates is a critical challenge in advancing semiconductor technology for innovative electronics and optoelectronics. This study investigates the effect of pre-nitridation temperature (750 °C and 600 °C) on the structural and optical properties of GaN films grown via molecular beam epitaxy (MBE) on chemical-vapor-deposited MoS₂/c-sapphire substrates. Characterization techniques, including RHEED, FE-SEM, AFM, Raman spectroscopy, XPS, HR-XRD, PL spectroscopy, and TEM, were used to evaluate MoS₂ layer and GaN films. Results indicate that the temperature of pre-nitridation on 2D MoS₂ buffer layer significantly affects the quality of GaN films. At 750 °C, the partially degraded MoS₂ layer led to rougher surfaces for the epitaxial growth of GaN, which had broader FWHM in HR-XRD, and increased defect-related emissions in PL spectra. Conversely, at 600 °C, the MoS₂ layer remained intact, resulting in smoother surfaces, improved crystallinity, and fewer defect states for the GaN film. TEM analysis confirmed successful van der Waals epitaxy at the lower temperature, while degradation of the MoS₂ layer was evident at higher temperatures. This study provides valuable insights into optimizing pre-nitridation conditions to achieve superior GaN films on 2D MoS₂ substrates, paving the way for enhanced GaN-based electronic and optoelectronic devices.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132407"},"PeriodicalIF":5.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297199","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 bath temperature on the microstructure and electrochemical properties of (Si, Ti) micro-alloyed Zn-6Al-3Mg hot-dip coatings 镀液温度对（Si, Ti）微合金Zn-6Al-3Mg热浸涂层显微组织和电化学性能的影响

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-16 DOI: 10.1016/j.surfcoat.2025.132402

Haotian Chen, Shaoshuang Zhang, Renbo Song, Xinwei Wang

{"title":"Effect of bath temperature on the microstructure and electrochemical properties of (Si, Ti) micro-alloyed Zn-6Al-3Mg hot-dip coatings","authors":"Haotian Chen, Shaoshuang Zhang, Renbo Song, Xinwei Wang","doi":"10.1016/j.surfcoat.2025.132402","DOIUrl":"10.1016/j.surfcoat.2025.132402","url":null,"abstract":"<div><div>The bath temperature exerts a significant influence on the microstructure and corrosion resistance of Zn-Al-Mg coatings, yet systematic investigations in this field remain limited. In this work, Zn-6Al-3 Mg-0.1Si-0.05Ti coatings were prepared at different bath temperatures to investigate the influence of bath temperature on their microstructure and electrochemical properties. The results indicate that higher bath temperatures promote the nucleation and growth of the Fe<img>Al alloy layer, leading to a reduction in the Al content within the coating. On one hand, this results in the disappearance of Al-rich dendrites within the coating, thereby altering the cathode of the electrochemical corrosion and reducing the difficulty of charge transfer. On the other hand, it modifies the morphology of the ternary eutectic and the proportions of its constituents, consequently influencing the protective properties of the corrosion products. When the bath temperature is maintained at 450 °C, the coating demonstrates optimal corrosion resistance. The high proportion of ternary eutectic, which contain abundant Al-rich and MgZn<sub>2</sub>, is probably the key factor of the improved corrosion resistance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132402"},"PeriodicalIF":5.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307381","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 tribological performance of WC-Co cermet strengthened nickel alloy composite coatings manufactured by extreme high-speed laser cladding (EHLA) 超高速激光熔覆WC-Co陶瓷强化镍合金复合涂层的显微组织和摩擦学性能

IF 5.3 2区材料科学

Surface & Coatings Technology Pub Date : 2025-06-16 DOI: 10.1016/j.surfcoat.2025.132390

Bruno F.A. Bezerra , Samuel Pinches , Hannah J. King , Shareen S.L. Chan , Ashok Meghwal , Sukhpreet Kaur , Colin Hall , Christopher C. Berndt , Andrew S.M. Ang

{"title":"Microstructure and tribological performance of WC-Co cermet strengthened nickel alloy composite coatings manufactured by extreme high-speed laser cladding (EHLA)","authors":"Bruno F.A. Bezerra , Samuel Pinches , Hannah J. King , Shareen S.L. Chan , Ashok Meghwal , Sukhpreet Kaur , Colin Hall , Christopher C. Berndt , Andrew S.M. Ang","doi":"10.1016/j.surfcoat.2025.132390","DOIUrl":"10.1016/j.surfcoat.2025.132390","url":null,"abstract":"<div><div>Composite coatings composed of blended nickel alloy (IN625) and WC-Co cermet were applied via the extreme high-speed laser cladding (EHLA) process to investigate its feasibility as a coating replacement for hard chrome plating. A range of laser powers was investigated. These cermet coatings were benchmarked against an IN625-only coating, in the analysis of their macrostructure, microstructure, phase composition, Vickers microhardness and sliding wear resistance by the pin-on-disc test. The EHLA process resulted in crack-free coatings, with a good metallurgical bonding to the substrate and homogenous distribution of cermet particles within the coatings. The microhardness of the EHLA composite coatings increased by 81–102 % as compared to the IN625 EHLA coating. The wear rates of the composite coatings were only 0.5–1.4 % that of the IN625 coating, and only 1–4 % that of hard chrome coating. A decrease in laser power demonstrated an increase in the carbide-occupied cross-sectional area from 11.2 % to 17.2 %, which corresponded to a 64 % enhancement in wear resistance. This study highlights the critical balance required between laser power, carbide area fraction and microstructural characteristics, on the performance of EHLA-deposited composite coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132390"},"PeriodicalIF":5.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330243","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