影响铝微弧氧化陶瓷层电绝缘性的工艺因素探讨  

Effect of Technological Factors on Electric Insulance of Micro-arc Oxidated Ceramic Coat on Aluminium

作　　者：沈德久[1] 廖波[1] 王玉林[1] 杨万和 

机构地区：[1]燕山大学,秦皇岛066004 [2]秦皇岛市自来水公司,秦皇岛066004

出　　处：《材料开发与应用》2002年第4期22-23,28,共3页Development and Application of Materials

基　　金：机械工业发展基金项目

摘　　要：研究了工艺参数对铝微弧氧化陶瓷层电绝缘性能的影响规律。结果表明 ,在一定临界值内 ,电流密度增大和氧化时间延长均使微弧氧化层的绝缘性能提高。分析认为 ,绝缘性能提高的根本原因是陶瓷层厚度和致密性的增加 ;超过临界参数后 ,陶瓷层厚度和致密性有所下降 ,故击穿电压也随之下降。The effect of process parameters on the electric insulance of micro arc oxidated ceramic coat on aluminium plate is studied. The results show that the insulance of micro arc oxidated ceramic coat increase with the rising of current density and the prolonging of oxidation time respectively within some critical values, which is attributed to the increase of thickness and density of the ceramic coat. When the current density and oxidation time go beyond the critical values, the thickness and density of the coat decrease and so does the insulance.

关 键 词：电绝缘性 铝 微弧氧化 陶瓷复层 击穿电压 工艺参数 

分 类 号：TG174.453[金属学及工艺—金属表面处理]