Mechanism and Properties of Al_(2)O_(3)-Ru Composite Coatings Prepared by Cathode Plasma Electrolytic Deposition  

阴极等离子电解沉积制备Al_(2)O_(3)-Ru复合涂层的机理与性能

作　　者：Xue Jianchao Jia Bo Wang Yafei Feng Qing Chai Zuoqiang Hao Xiaojun Xue Juanqin 薛建超;贾波;王亚菲;冯庆;柴作强;郝小军;薛娟琴(西安建筑科技大学冶金工程学院,陕西西安710055;西安泰金新能科技股份有限公司,陕西西安710016)

机构地区：[1]College of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China [2]Xi’an Taijin New Energy&Materials Sci-Tech Co.,Ltd,Xi’an 710016,China

出　　处：《稀有金属材料与工程》2024年第12期3306-3312,共7页Rare Metal Materials and Engineering

基　　金：Shaanxi Province Key Research and Development Plan(2024GX-YBXM-368)。

摘　　要：Alumina coatings doped with different precious metals were prepared by cathode plasma electrolytic deposition.Results show that the porosity of precious metal-doped alumina coatings(especially Al_(2)O_(3)-Ru)decreases,and the high-temperature cyclic oxidation resistance and spallation resistance are enhanced.The Al_(2)O_(3)-Ru composite coating shows better effect:its average oxidation rate K and average amount of oxide spallation G are minimum.Meanwhile,Nernst equation was used to explain the simultaneous deposition of precious metal and alumina,and the whole process and mechanism of deposition were analyzed.采用阴极等离子体电沉积法制备了不同贵金属掺杂氧化铝涂层。结果表明,贵金属掺杂氧化铝制备的涂层孔隙率降低(特别是Al_(2)O_(3)-Ru),涂层的耐高温循环氧化性能和抗剥落性能均有所提升。Al_(2)O_(3)-Ru复合涂层的效果更好,平均氧化速率值K和平均氧化物碎裂量G最小。同时,利用能斯特方程解释了贵金属和氧化铝同时沉积的原因,对沉积的整个过程和机理进行了分析和探讨。

关 键 词：cathode plasma electrolytic deposition precious metal POROSITY high-temperature cyclic oxidation resistance spallation resistance 

分 类 号：TG174.4[金属学及工艺—金属表面处理]