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。
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
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)。
