摘要
利用多弧离子镀技术在Zr-4合金表面制备了Cr+TiAlN复合涂层。采用多种分析手段研究了涂层在1200℃高温水蒸气环境下的抗氧化性能。利用X射线衍射分析涂层的物相成分;利用扫描电镜观察涂层表面的微观形貌;利用能谱对涂层元素种类与含量进行分析;采用自动划痕仪对涂层的力学性能进行检测。结果表明:多弧离子镀膜层表面均匀平整、致密度大,但存在一定数量的微孔洞及大颗粒。镀有Cr/TiAlN涂层试样的氧化速率远低于原始锆合金的氧化速率,抗高温水蒸气氧化性能优于原始Zr-4合金,且单位面积的氧化增重量仅为原始Zr-4合金的36%。划痕实验结果表明,膜基结合力为26 N,膜基结合性能良好。
Zr-4 alloy surfaces were modified with the Cr/TiAlN composite coatings synthesized by multi-arc ion plating(MAIP).The influence of the growth conditions of Cr/TiAlN coating on the surface oxidation resistance in 1200℃ steam,microstructures and interfacial adhesion was investigated with X-ray diffraction scanning electron microscopy,energy dispersive spectroscopy and conventional mechanical tools.The preliminary results show that the compact uniform Cr/TiAlN coatings significantly increased the steam oxidation resistance.To be specific,the Cr/TiAlN coatings,deposited under the optimized conditions,decreased the oxidation weight per unit-area of Zr-4 alloy to 36% in spite of some micro-pores and condensed large particles on the surfaces.In addition,the interface adhesion was estimated to be 26 N and no peeling-off was observed.
作者
杨振
樊湘芳
邱长军
李涛
刘艳红
王晓婧
Yang Zhen;Fan Xiangfang;Qiu Changjun;Li Tao;Liu Yanhong;Wang Xiaojing(School of Mechanical Engineering,University of South China,Hengyang 421001,China;State Power Investment Corporation science and Technology Research Institute company limited,Beijing 102209,China)
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2019年第2期145-149,共5页
Chinese Journal of Vacuum Science and Technology
基金
国家科技重大专项子课题(2015ZX06004001-002)
湖南省教育厅重点实验室创新平台开放基金项目(16K076)
