Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第12卷    第3期    总第48期    2002年6月

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文章编号:1004-0609(2002)03-0415-07
双极串联脉冲放电沉积微晶涂层的高温氧化行为
徐  强1,何业东1,齐慧滨1,王德仁1,李正伟2,高  唯2

(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,New Zealand
)

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Y2O3微小颗粒的1Cr18Ni8微晶涂层。在950℃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Y2O3颗粒有助于进一步降低涂层的氧化速率及提高氧化膜的抗剥落性能。

 

关键词: 双极串联脉冲放电;微晶涂层;高温氧化

High-temperature behavior of
 micro-crystallized coatings
deposited by series double-pole
 electro-pulse discharge
XU Qiang1,HE Ye-dong1,QI Hui-bin1,WANG De-ren1
LI Zheng-wei2,GAO Wei2

1.Beijing Key Laboratory for Corrosion,
Erosion and Surface Technology,University of Science and
 Technology Beijing,Beijing 100083,China;
2.Department of Chemical and Material Engineering,
The University of Auckland,New Zealand

Abstract:A 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 elect rode. 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-Y2O3 particles were prepared on the surface of 1Cr18Ni8 by a modified double-poles de position device. The experimental results show that the oxidation resistance of 1Cr18Ni8 micro-crystalline coatings in air at 950℃ is improved greatly. It w as found that the addition of dispersed Y2O3 particles into the micro-crystalline coatings can reduce the scaling rate and enhance the oxide spallation resistance still further.

 

Key words: series double-pole electro-pulse discharge; micro-crystalline coatings; high-temperature oxidation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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