阴极气膜微弧放电沉积ZrO_2-Y_2O_3陶瓷涂层  

ZrO_2-Y_2O_3 Coating Prepared by Cathodic Plasma Electrolysis Deposition

作　　者：韩伟[1] 何业东[1] 王德仁[1] 薛润东[1] 高唯 

机构地区：[1]北京科技大学 [2]School of Engineering

出　　处：《稀有金属》2004年第4期622-626,共5页Chinese Journal of Rare Metals

基　　金：国家自然科学基金 ( 2 0 3 73 0 0 6);北京市腐蚀;磨蚀与表面技术重点实验室的资助项目

摘　　要：采用阴极气膜微弧放电沉积制备ZrO2 Y2 O3陶瓷涂层 ,利用水溶液中阴极气膜放电产生的等离子体的能量 ,使在阴极表面形成的沉积物直接烧结为陶瓷涂层。研究了沉积涂层的影响因素和涂层形貌及结构。SEM ,EDS和XRD分析结果表明 ,获得的ZrO2 Y2 O3陶瓷涂层表面光滑、与基体结合致密、成分和相结构均匀 ,是一种由Y2 O3部分稳定的ZrO2 陶瓷涂层。通过测试阴极气膜放电过程中电流随时间的变化以及电位在两电极间分布 。ZrO 2 Y 2O 3 coating was prepared by cathodic plasma electrolysis deposition (CPED), in which the materials deposited on the cathode surface can be directly sintered together to form ceramic coating by the plasma energy produced from the micro discharge of cathodic gaseous envelope in the aqueous electrolysis. The influence factors on depositing coating, and morphologies, components and phase structure of ZrO 2 Y 2O 3 coating were studied. It is shown from the analyzed results of SEM, EDS and XRD that ZrO 2 Y 2O 3 coating has the characteristics such as smooth surface, strong adhesion with the substrate metal, uniform component and phase structure, and is a kind of partial yttria stabilized zirconia. The CPED mechanism was analyzed by measuring the current time curves and the potential distribution between the two electrodes during CPED process.

关 键 词：阴极气膜微弧放电 等离子体电解沉积 ZRO2-Y2O3 陶瓷涂层 

分 类 号：TQ174.75[化学工程—陶瓷工业]