(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
micro-crystallized coatings
deposited by series double-pole
electro-pulse discharge
（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
