铜业工程Issue(1)：104-111,8.DOI:10.3969/j.issn.1009-3842.2025.01.011
Y2O3改性WC-Co基涂层高温磨损性能的研究
Effect of Y2O3 on High-Temperature Wear Resistance of Plasma Cladding WC-Modified Co-Based Coating
摘要
Abstract
In this paper,the effects of adding different mass fraction of Y₂O₃(0%,0.2%,0.6%,1%)on microstructure and properties of plasma-melted WC-Co-based coatings(containing 40%WC)were investigated.The results showed that Y₂O₃ modified coatings were mainly composed of γ-Co phase,FeNi phase,Cr₂₃C₆ phase,and W-containing phase.With the gradual increase of Y₂O₃ mass fraction,the microstructure of the coating is first refined and then coarsened,the average microhardness of the coating is first increased and then decreased,and the high-temperature(600℃)wear resistance of the coating is first increased and then decreased.When Y₂O₃ mass frac-tion was 0.6%,the best microhardness and wear resistance of the coating was obtained:the microhardness was HV 996 and the wear rate was 2.06×10-5 mm3/(N·m),which was 34.8%lower than that of the coating with 0%Y₂O₃ added.The analysis of the high-tempera-ture wear mechanisms of WC-Co-based coatings with different mass fraction of Y2O3 showed that moderate addition of Y2O3 could re-duce the oxidative and adhesive wear of WC-Co-based coatings.关键词
等离子熔覆/Y2O3/WC-Co基涂层/高温磨损性能/显微组织Key words
plasma cladding/Y2O3/WC-Co-based coating/high-temperature wear resistance/microstructure分类
金属材料引用本文复制引用
刘日新,罗显芝,尹垲真,孙云龙,黄雨,刘德武,许杰,彭文屹..Y2O3改性WC-Co基涂层高温磨损性能的研究[J].铜业工程,2025,(1):104-111,8.基金项目
国家自然科学基金项目(52301014) （52301014）
江西省重点研发项目(20212BBE53043)资助 （20212BBE53043）
