摘要
为了研究微弧氧化的基本过程和机理,采用自行设计的气体介质电极击穿放电试验装置,测量了微弧氧化过程中阴极和阳极之间的距离与最低击穿电压的关系曲线,并建立了微弧氧化阳极气泡击穿理论模型和阳极等效电路。结果表明:最低击穿电压Vk值大小随阴、阳极之间距离增大而近似线性增加,微弧氧化膜层是在气泡位于陶瓷层的孔隙处时而生长;阳极气泡击穿理论模型能够合理地解释微弧氧化的基本过程和机理,并为改善微弧氧化工艺和提高膜层性能提供了理论基础。
In order to study the course and mechanism of micro-arc oxidation （MAO）, the relationship between gap length electrodes and the lowest discharge voltage was measured by a specially designed experimental apparatus. A simplified anodic bladder discharge theoretical model and equivalent circuit were established. The results indicate that： the lowest discharge voltage increases linearly with the growth of the gap length between electrodes; the growth of MAO film occurs when the bladders are in the holes of the ceramic layer; the model can explain reasonably the course and mechanism of MAO, it can provide a theoretical base for improving the MAO technologies as well as the performance of MAO layers. 5 figs, 9 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第5期116-119,共4页
Journal of Chang’an University(Natural Science Edition)
基金
长安大学青年科技基金项目(06Q03)
关键词
机械工程
微弧氧化
电击穿模型
气泡击穿理论
阳极等效电路
mechanical engineering
micro-arc oxidation
electrical discharge model
bladder electrode discharge theory
anodie equivalent circuit
