双极串联脉冲放电沉积微晶涂层的高温氧化行为  

High-temperature behavior of micro-crystallized coatings deposited by series double-pole electro-pulse discharge

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

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]Department of Chemical and Material Engineering,The University of Auckland

出　　处：《中国有色金属学报》2002年第3期415-421,共7页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目 ( 5 980 10 0 2 )

摘　　要：提出了一种以脉冲电源两极作为沉积电极 ,以被处理试样作为感应电极 ,发生串联脉冲放电沉积金属涂层的新技术。通过“针—板—针”电极放电实验证实了上述串联脉冲放电过程。采用改进的双极串联电脉冲沉积设备在 1Cr18Ni8不锈钢基体上沉积了 1Cr18Ni8微晶涂层和弥散Y2 O3 微小颗粒的 1Cr18Ni8微晶涂层。在 95 0℃空气中进行的高温氧化实验结果表明 ,获得的 1Cr18Ni8微晶涂层极大地提高了抗高温氧化性能 ,同时还证实在微晶涂层中施加微小弥散Y2 O3A new series double-pole electro-pulse discharge technique for the coating deposition was proposed, in which both positive and negative poles of the pulse-power were used as depositing electrodes and the treated alloy as an induced electrode. The electro-pulse discharge process was verified by a set of pin-plane-pin electrode device. 1Cr18Ni8 micro-crystalline coatings and 1Cr18Ni8 micro-crystalline coatings dispersed with nano-Y 2O 3 particles were prepared on the surface of 1Cr18Ni8 by a modified double-poles deposition device. The experimental results show that the oxidation resistance of 1Cr18Ni8 micro-crystalline coatings in air at 950?℃ is improved greatly. It was found that the addition of dispersed Y 2O 3 particles into the micro-crystalline coatings can reduce the scaling rate and enhance the oxide spallation resistance still further.

关 键 词：双极串联脉冲放电 沉积 微晶涂层 高温氧化 

分 类 号：TG172.82[金属学及工艺—金属表面处理] TG174.4[金属学及工艺—金属学]