串联电脉冲沉积Co-Cr弥散Y_2O_3合金化微晶涂层  

Micro-Crystalline Coatings of Co-Cr Dispersed with Y_2O_3 Nanoparticles Deposited by Series Electro Pulse Discharge

作　　者：徐强[1] 何业东[1] 齐慧滨[1] 王德仁[1] 李正伟[2] 高唯[2] 

机构地区：[1]北京科技大学北京市腐蚀,磨蚀与表面技术重点实验室,北京100083 [2]奥克兰大学化学与材料工程系

出　　处：《中国稀土学报》2002年第4期334-338,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目 (5 980 10 0 2 )

摘　　要：提出了一种利用被沉积基体材料作为感应电极 ,脉冲电源的输出两极均作为沉积电极的串联电脉冲沉积涂层技术 ,以Co3 0Cr合金为沉积电极 ,利用串联电脉冲沉积技术成功地在 18 8不锈钢基体上沉积了Co Cr合金化微晶涂层和弥散Y2 O3细小颗粒的Co Cr合金化微晶涂层 ,并在 95 0℃静态空气中进行了涂层氧化试验。通过氧化动力学和SEM ,XRD等分析表明 ,串联电脉冲沉积的合金化微晶涂层具有良好的抗高温氧化性能 。A new technique series electro pulse discharge (SEPD) was developed as a surface coating process. In this process, both positive and negative poles of a pulse power were used as the depositing electrodes with the substrate alloy as an induction electrode. Micro crystalline Co Cr coatings and oxide dispersed Co Cr stainless steel coatings were deposited on stainless steel (Fe 18Cr 8Ni) surface by using Co30Cr alloy as depositing electrodes. Oxidation at 950 ℃ in ambient air shows that the coatings greatly improved the oxidation resistance of the steel. The addition of dispersed Y 2O 3 nano particles into the alloy coatings was found to further reduce the scaling rate and enhance the oxide spallation resistance.

关 键 词：Y2O3 金属材料 稀土 串联电脉冲沉积 合金化微晶涂层 高温氧化 表面涂层 钴 铬 

分 类 号：TG174.445[金属学及工艺—金属表面处理]