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Correlation between wear and thermal/mechanical parameters of Ti3C2Tx enhanced polyimide coating Ti3C2Tx增强聚酰亚胺涂层磨损与热力学参数的关系
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-12 DOI: 10.1016/j.surfcoat.2025.132264
Guoshuang Hua , Meng Cai , Xiaoqiang Fan , Minhao Zhu
{"title":"Correlation between wear and thermal/mechanical parameters of Ti3C2Tx enhanced polyimide coating","authors":"Guoshuang Hua ,&nbsp;Meng Cai ,&nbsp;Xiaoqiang Fan ,&nbsp;Minhao Zhu","doi":"10.1016/j.surfcoat.2025.132264","DOIUrl":"10.1016/j.surfcoat.2025.132264","url":null,"abstract":"<div><div>Polyimide (PI) demonstrates exceptional thermal stability but suffers from limited wear resistance, restricting its applications in friction environments. Herein, we repot a mechanically blended Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-PI composite coating with optimized interfacial bonding. Leveraging the exceptional mechanical properties of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>, the composite coating achieves remarkable performance enhancements. The experimental results reveal that the Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-PI coating shows outstanding mechanical properties, with hardness, tensile strength, and fracture stress values of 228.7 MPa, 64.46 MPa, and 40.55 MPa, respectively. Additionally, it exhibits superior thermal stability (T<sub>g</sub> = 347.8 °C). Compared to the PI coating, the wear rate of the Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-PI coating under low and high loads is reduced by 47.34 % and 72.03 %, respectively, and the wear width decreases by 158 μm and 209 μm. Molecular dynamics (MD) simulation results show that Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> has a higher binding energy with PI-precursor solution (−20.4 kcal/mol). This enhancement is attributed to the robust interface interactions between the abundant functional groups on the surface of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> and PI, ensuring uniform dispersion of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> within the PI matrix and achieving effective dispersion strength. This study reveals a significant correlation between the wear resistance of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>-enhanced polyimide coatings and key thermal/mechanical parameters, offering new insights for the design of high-performance wear-resistant materials.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132264"},"PeriodicalIF":5.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946670","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
Optimizing HVOF-sprayed inconel 718 coatings via direct single-aging treatment: Influence of aging temperature on microstructure, mechanical and tribological properties 通过直接单次时效处理优化hvof喷涂inconel 718涂层:时效温度对微观组织、力学和摩擦学性能的影响
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-11 DOI: 10.1016/j.surfcoat.2025.132263
Shuhan Yang , Dingyong He , Fengxiao Ma , Li Cui , Lixia Ma , Qing Cao , Fanhui Bu , Yi Xu , Jinman Yu
{"title":"Optimizing HVOF-sprayed inconel 718 coatings via direct single-aging treatment: Influence of aging temperature on microstructure, mechanical and tribological properties","authors":"Shuhan Yang ,&nbsp;Dingyong He ,&nbsp;Fengxiao Ma ,&nbsp;Li Cui ,&nbsp;Lixia Ma ,&nbsp;Qing Cao ,&nbsp;Fanhui Bu ,&nbsp;Yi Xu ,&nbsp;Jinman Yu","doi":"10.1016/j.surfcoat.2025.132263","DOIUrl":"10.1016/j.surfcoat.2025.132263","url":null,"abstract":"<div><div>The enhancement of the hardness and tribological properties of ball valve surface coatings is imperative for stability and reliability of reusable engines. In this study, Inconel 718 coatings were deposited on SUS 304 substrates using high-velocity oxygen fuel (HVOF) spraying. The effects of direct single aging treatments on the microstructure, mechanical and tribological properties of the HVOF-sprayed Inconel 718 coatings were systematically investigated, revealing the intrinsic relationships between aging temperature, microstructural evolution and performance. The results indicate that the porosity, grain size, oxidation degree and residual compressive stress levels of the coatings subjected to direct single aging treatments (SA600–720) increase with temperature, while the dislocation strengthening effect exhibits a negative correlation with it. Within the range of 600 °C to 660 °C, the γ’ phase is identified as the primary precipitate, undergoing significant coarsening and redissolution between 640 °C and 660 °C. From 680 °C to 720 °C, the γ” phase becomes the dominant precipitate, with its quantity and size increasing markedly with the aging temperature. The mechanical and tribological properties of the SA700 coating are optimized due to the synergistic effects of dislocation strengthening, precipitation strengthening, and residual compressive stress. Specifically, it achieves a microhardness of 694.9 HV<sub>0.1</sub>, representing an increase of 25.4 % and 29.2 % over the coatings of as-sprayed (ASC) and solution with double aging treatments (SDA). Moreover, the average friction coefficient, wear mass and wear volume of the SA700 coating are reduced to 0.4125 μ, 0.54 mg, and 0.0066 mm<sup>3</sup>, respectively, representing decreases of 17.2 %, 45.7 %, and 47.6 % compared to the ASC coating. This study demonstrates that direct single aging treatments effectively enhance the mechanical and tribological properties of HVOF-sprayed Inconel 718 coatings.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132263"},"PeriodicalIF":5.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937617","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
Investigation of chromate-free and fluorine-free pretreatments for electroless NiP deposition on Mg from alkaline electrolytes 碱性电解液中化学沉积Mg的无铬和无氟预处理研究
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-11 DOI: 10.1016/j.surfcoat.2025.132249
A. He, H. Hu, D.G. Ivey
{"title":"Investigation of chromate-free and fluorine-free pretreatments for electroless NiP deposition on Mg from alkaline electrolytes","authors":"A. He,&nbsp;H. Hu,&nbsp;D.G. Ivey","doi":"10.1016/j.surfcoat.2025.132249","DOIUrl":"10.1016/j.surfcoat.2025.132249","url":null,"abstract":"<div><div>Electroless or electrodeposition of Ni<img>P on Mg requires the formation of a pretreatment layer on the Mg surface before deposition, due to the susceptibility of Mg to corrosion. Historically, chromate and fluorine ions have been used to pretreat the Mg surface to facilitate coating deposition. Unfortunately, both chromate and fluorine ions pose environmental issues, which should be avoided whenever possible. In this work, four environmentally friendly recipes to pretreat Mg for Ni<img>P electroless deposition from an alkaline electrolyte are explored. A single pretreatment layer is shown to be inadequate at generating a well adhering Ni<img>P coating to Mg, which is deposited from an alkaline electrolyte. Instead, two pretreatment processes combining vanadate and manganese-phosphate conversion layers are needed to provide a good conversion coating for electroless deposition of uniform and adherent Ni<img>P coatings to Mg substrates. Cross-hatch testing indicated that the best Ni<img>P coating achieved the highest adhesion designation of 5B. Preliminary assessment of corrosion and mechanical property behavior was done through potentiodynamic polarization and hardness measurements. The Ni<img>P coating fabricated with the combined vanadate/manganese-phosphate conversion pretreatment had better corrosion resistance, with a lower corrosion current density and higher corrosion potential, than Mg and significantly higher hardness.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132249"},"PeriodicalIF":5.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941142","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
Tuning the mechanical properties and toughness of TiAlN coatings deposited by low duty cycle pulsed magnetron sputtering from a rotating cylindrical target 旋转圆柱形靶低占空比脉冲磁控溅射制备TiAlN涂层的力学性能和韧性
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-10 DOI: 10.1016/j.surfcoat.2025.132262
Veronika Simova, Oleg Zabeida, Luis Bernardo Varela, Jincheng Qian, Jolanta-Ewa Klemberg-Sapieha, Ludvik Martinu
{"title":"Tuning the mechanical properties and toughness of TiAlN coatings deposited by low duty cycle pulsed magnetron sputtering from a rotating cylindrical target","authors":"Veronika Simova,&nbsp;Oleg Zabeida,&nbsp;Luis Bernardo Varela,&nbsp;Jincheng Qian,&nbsp;Jolanta-Ewa Klemberg-Sapieha,&nbsp;Ludvik Martinu","doi":"10.1016/j.surfcoat.2025.132262","DOIUrl":"10.1016/j.surfcoat.2025.132262","url":null,"abstract":"<div><div>Despite the promising capabilities, rotating cylindrical magnetron sputtering (CMS) has been relatively rarely described in the literature, especially regarding hard protective coating applications. In this study, we investigate the use of CMS in the pulsed dc mode with very low duty cycle (&lt;10 %) to prepare model TiAlN coatings at relatively high deposition rates (4 μm/h). We examine the impact of key parameters, specifically, substrate bias and substrate temperature on the coating microstructure and properties. Particularly, we focus on the residual stress in the coatings and their nanoindentation toughness, as these characteristics are crucial for the understanding of the film behavior and optimizing coating architectures. TiAlN coatings prepared with a substrate bias of about −100 V exhibit dense morphology, and high hardness (28–30 GPa), while the level of compressive stress in the coatings can be significantly reduced by increasing substrate temperature (from −5.6 GPa to −2.3 GPa at room temperature and 400 °C, respectively). Furthermore, we show a linear relationship between the residual stress in the TiAlN coatings and their nanoindentation toughness (1.1 MPa·m<sup>1/2</sup> to 5.1 MPa·m<sup>1/2</sup>). Our findings demonstrate that both substrate bias and temperature can be effectively used to control the microstructure, mechanical properties, toughness and compressive stress level in the coatings, thereby opening a possibility to mitigate loading stress in various applications.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132262"},"PeriodicalIF":5.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946668","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
Mechanism of continuous wave laser synchronous hardening-polishing on H13 steel H13钢连续波激光同步硬化-抛光机理
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-10 DOI: 10.1016/j.surfcoat.2025.132259
Qiang Liang , Binyuan Xu , Yonghang Xu , Hong Chen , Yanbin Du , Yanyan Jia
{"title":"Mechanism of continuous wave laser synchronous hardening-polishing on H13 steel","authors":"Qiang Liang ,&nbsp;Binyuan Xu ,&nbsp;Yonghang Xu ,&nbsp;Hong Chen ,&nbsp;Yanbin Du ,&nbsp;Yanyan Jia","doi":"10.1016/j.surfcoat.2025.132259","DOIUrl":"10.1016/j.surfcoat.2025.132259","url":null,"abstract":"<div><div>Although work aimed at laser polishing or hardening alone has been widely studied, the combination of laser hardening with improvements in surface roughness has not been sufficiently explored. In this work, the surface hardening effect of continuous wave laser scanning of H13 steel and its morphology changes were investigated. A three-dimensional (3D) transient model was first developed to simulate the process of surface hardening during the laser scanning process, and then a two-dimensional (2D) transient model was developed to explain the changes in the surface morphology while the surface was hardened. It reveals the synchronous hardening-polishing mechanism of the material surface under reasonable process parameters. To validate the accuracy of the simulation model, tests were carried out with the same process parameters. A comparison of the simulation results and experimental data revealed that the error in hardening depth was approximately 8.20 %. The maximum average hardness reached approximately 3.3 times that of the substrate. After polishing, the surface roughness decreased by 75.68 % in the parallel direction and 33.80 % in the vertical direction compared to the initial surface. The study shows that continuous wave lasers can effectively achieve synchronous hardening-polishing results, which can contribute to the expansion of the application of H13 steels.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132259"},"PeriodicalIF":5.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942487","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
Duplex treatments prepared by HiPIMS and sol-gel on biodegradable ZK60 magnesium alloy for biomedical applications 生物医学用可降解ZK60镁合金的HiPIMS和溶胶-凝胶双相处理
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-09 DOI: 10.1016/j.surfcoat.2025.132258
Adrián Claver , Iban Quintana , Iván Fernández , José Antonio Santiago , Pablo Díaz-Rodriguez , Miguel Panizo-Laiz , Iñaki Zalakain , José Carlos Urroz , José Antonio García
{"title":"Duplex treatments prepared by HiPIMS and sol-gel on biodegradable ZK60 magnesium alloy for biomedical applications","authors":"Adrián Claver ,&nbsp;Iban Quintana ,&nbsp;Iván Fernández ,&nbsp;José Antonio Santiago ,&nbsp;Pablo Díaz-Rodriguez ,&nbsp;Miguel Panizo-Laiz ,&nbsp;Iñaki Zalakain ,&nbsp;José Carlos Urroz ,&nbsp;José Antonio García","doi":"10.1016/j.surfcoat.2025.132258","DOIUrl":"10.1016/j.surfcoat.2025.132258","url":null,"abstract":"<div><div>The utilization of magnesium-based biomaterials in biomedical applications has grown considerably in recent years due to their favourable biocompatibility, biodegradability, and mechanical properties that closely resemble those of bones. However, the use of Mg-based alloys in aggressive environments, such as human bodily fluids, is hindered by their susceptibility to rapid corrosion, which compromises their mechanical properties. This can lead to infections in the body due to uncontrolled corrosion. In this study, a novel approach was employed to enhance the corrosion resistance of biodegradable ZK60 magnesium alloy and achieve optimal surface properties that can potentially enhance its antibacterial performance, hardness, and toughness. This approach involved the application of duplex treatments consisting of TiN doped with Cu coatings deposited via high power impulse magnetron sputtering (HiPIMS) followed by a Sol-gel top layer. The study systematically investigated the surface properties (wettability, roughness, and morphology), hardness, toughness and adhesion of the coatings to the substrate. To assess the corrosion resistance, mass change and hydrogen evolution of the samples, they were immersed in Hanks Balanced Salts Solution. Electrochemical tests were conducted to estimate the corrosion behavior of the samples. The in-vitro corrosion tests results demonstrated that the duplex treatments enhanced the corrosion resistance of the uncoated magnesium alloy samples. The duplex treatments exhibited suitable properties, including high corrosion resistance, hardness, toughness and adequate values of wettability and porosity-roughness. Therefore, they can be considered a promising option for use in biodegradable magnesium implants.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132258"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931619","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 insight into the properties of ethanol-fueled HVOF-sprayed Stellite-type coatings 对乙醇燃料hvof喷涂stellite型涂层性能的深入研究
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-09 DOI: 10.1016/j.surfcoat.2025.132257
Haideé Ruiz-Luna , Alma G. Mora-García , Diana F. Millán-Rodríguez , Christian Félix-Martínez , Diego G. Espinosa-Arbelaez , Juan Muñoz-Saldaña
{"title":"An insight into the properties of ethanol-fueled HVOF-sprayed Stellite-type coatings","authors":"Haideé Ruiz-Luna ,&nbsp;Alma G. Mora-García ,&nbsp;Diana F. Millán-Rodríguez ,&nbsp;Christian Félix-Martínez ,&nbsp;Diego G. Espinosa-Arbelaez ,&nbsp;Juan Muñoz-Saldaña","doi":"10.1016/j.surfcoat.2025.132257","DOIUrl":"10.1016/j.surfcoat.2025.132257","url":null,"abstract":"<div><div>The high-velocity oxy-liquid fuel (HVOLF) technique is a promising hypersonic HVOF spraying method designed to enhance coating quality. This study explores the feasibility of using an innovative thermal spray technology, specifically ethanol-fueled HVOF, to fabricate Stellite-type hard-facing coatings. A comprehensive investigation was conducted to examine the correlation between processing parameters —including ethanol-oxygen ratio and stand-off distance (SoD)— and the resulting characteristics and properties of the coatings. The analysis encompassed phase composition, hardness, and microstructural details such as porosity, internal oxidation, deposit efficiency, thickness, and surface roughness. Furthermore, the tribological, corrosion, and oxidation behaviors of the coatings were assessed. The findings indicate that Stellite-type coatings demonstrate adaptability to the processing parameters. The coatings exhibit a relatively dense and uniform structure, with neutral flames followed by fuel-rich gas mixtures, yielding the best microstructural features, i.e., lower porosity and oxide content and enhanced deposit efficiency and thickness. The SoD notably impacts porosity and oxide inclusions for coatings deposited using oxy- and fuel-rich gas mixtures. Analysis revealed that tribo-oxidation with a strain-induced transformation from fcc to hcp structure contributes to reduced wear in denser coatings; on the contrary, this transformation predominantly prevents further sliding wear in coatings exhibiting porosity and oxide content exceeding 3 %.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132257"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070326","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
Dual-target stabilization and antifouling via S-scheme Cu2O@TiO2 heterojunction for robust marine coating under illumination 基于s方案Cu2O@TiO2异质结的船舶涂料在光照下的双目标稳定和防污
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-08 DOI: 10.1016/j.surfcoat.2025.132254
Zhipeng Xie , Lu Wang , Yuhui Cheng , Qian Guo , Haibo Zhou , Congshu Huang , Jingjing Wang , Weifeng Bu
{"title":"Dual-target stabilization and antifouling via S-scheme Cu2O@TiO2 heterojunction for robust marine coating under illumination","authors":"Zhipeng Xie ,&nbsp;Lu Wang ,&nbsp;Yuhui Cheng ,&nbsp;Qian Guo ,&nbsp;Haibo Zhou ,&nbsp;Congshu Huang ,&nbsp;Jingjing Wang ,&nbsp;Weifeng Bu","doi":"10.1016/j.surfcoat.2025.132254","DOIUrl":"10.1016/j.surfcoat.2025.132254","url":null,"abstract":"<div><div>Improving the performance of antifouling coating under illumination-involved harsh environments is of prime scientific and engineering importance. However, it still remains a big challenge due to the strong photo-corrosion character of cuprous oxide (Cu<sub>2</sub>O) that works as the most widely-used primary antifoulant. To address this issue, a novel heterojunction of Cu<sub>2</sub>O@TiO<sub>2</sub> was constructed by <em>in situ</em> adsorption-hydrolysis approach. The as-designed heterojunction structure endows superior photo-stability with Cu<sub>2</sub>O@TiO<sub>2</sub>, which has been proven to proceed <em>via</em> S-scheme mechanism by a set of complementary characterizations including <em>in situ</em> XPS and EPR. As anticipated, the resulted Cu<sub>2</sub>O@TiO<sub>2</sub> coating manifests excellent stability and antifouling performance under illumination-involved mimetic service conditions such as dry-dock and waterline environments, as substantiated by the bioassays and marine field trials. A dual-target photo-synergized enhancing mechanism for the S-scheme Cu<sub>2</sub>O@TiO<sub>2</sub> could be deduced as to: (i) inhibit the accumulation of holes on Cu<sub>2</sub>O to exert a stabilization effect; (ii) boost the generation of reactive oxygen species (ROS, including HO<img>/O<sub>2</sub><sup>−</sup><img>) to enhance the antifouling property. The methodology provides a proof-of-concept design to fabricate high photo-stable Cu<sub>2</sub>O-based antifoulant materials, with the gain in understanding the intrinsic failure principle of coatings and the biocidal mechanism of cuprous oxide toward marine application.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132254"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946669","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
Multicomponent high-entropy rare earth hexaaluminate thermal barrier coating with prolonged thermal cycling performance 长时间热循环性能的多组分高熵稀土六铝酸盐热障涂层
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-08 DOI: 10.1016/j.surfcoat.2025.132255
Jieyan Yuan , Hanying Hu , Hao Zhang , Chuncheng Wei , Shuang Li , Xiangrong Lu
{"title":"Multicomponent high-entropy rare earth hexaaluminate thermal barrier coating with prolonged thermal cycling performance","authors":"Jieyan Yuan ,&nbsp;Hanying Hu ,&nbsp;Hao Zhang ,&nbsp;Chuncheng Wei ,&nbsp;Shuang Li ,&nbsp;Xiangrong Lu","doi":"10.1016/j.surfcoat.2025.132255","DOIUrl":"10.1016/j.surfcoat.2025.132255","url":null,"abstract":"<div><div>With the increasing inlet temperature of gas turbine engines, the development of thermal barrier coatings (TBCs) present significant challenges. In present work, a novel high-entropy (La<sub>0.2</sub>Nd<sub>0.2</sub>Sm<sub>0.2</sub>Eu<sub>0.2</sub>Gd<sub>0.2</sub>)MgAl<sub>11</sub>O<sub>19</sub> (HE-RMA) coating was developed by air plasma spraying for its excellent comprehensive performance. Compared to LaMgAl<sub>11</sub>O<sub>19</sub> coating under identical spraying conditions, it is observed that HE-RMA coating exhibits a denser structure and a greater proportion of amorphous phase, which is attributable to its higher melting degree. The evolutionary trend of microstructure as well as thermal and mechanical properties of plasma-sprayed HE-RMA coating after thermal aging were investigated. It reveals that thermal-aged HE-RMA coating exhibits lower thermal conductivity, greater structural integrity and better mechanical properties than single-component LaMgAl<sub>11</sub>O<sub>19</sub> coating. In thermal cyclic fatigue test, HE-RMA coating undertakes a longer thermal cycling lifetime than its single-component counterpart. These preliminary results suggest that high-entropy design could tailor MgO-doped rare-earth hexaluminates with superior multi-functional properties and enable significant improvement in cycling performance.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"511 ","pages":"Article 132255"},"PeriodicalIF":5.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946671","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
OES-based control methodology for process optimization of WOx electrochromic coatings deposited by reactive magnetron sputtering 基于oes的反应磁控溅射氧化钨电致变色涂层工艺优化控制方法
IF 5.3 2区 材料科学
Surface & Coatings Technology Pub Date : 2025-05-08 DOI: 10.1016/j.surfcoat.2025.132239
O. Hernandez-Rodriguez , G. Guzman , R. Ortiz , E. Zuza , V. Bellido-Gonzalez , I. Quintana , E. G-Berasategui
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