High-temperature oxidation behavior of CeO_2-SiO_2/Ni-W-P composites  

作　　者：徐瑞东 王军丽 郭忠诚 王华 

机构地区：[1]Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology [2]Research Center for Analysis and Measurement,Kunming University of Science and Technology

出　　处：《中国有色金属学会会刊：英文版》2009年第5期1190-1195,共6页Transactions of Nonferrous Metals Society of China

基　　金：Project(20806035)supported by the National Natural Science Foundation of China;Project(2007E187M)supported by the Applied Basic Research Plans Program of Yunnan Province,China;Project supported by the Foundation for Leaders of Disciplines in Science and Technology of Yunnan Province,China;Project(08C0025)supported by the Scientific Research Fund of Yunnan Provincial Education Department,China;Project supported by the Training Foundation for Talents of Kunming University of Science and Technology,China

摘　　要：Ni-W-P matrix composites containing CeO2 and SiO2 nano-particles were prepared on common carbon steel surface by means of pulse electrodeposition,and the high-temperature oxidation behavior was investigated.The results show that when the oxidation time is controlled in 1 h,oxidation kinetics curve between oxidation mass gain rate and oxidation temperature of CeO2-SiO2/Ni-W-P composites accords with the index increasing law.When the oxidation temperature is controlled at 300℃,the kinetics curve between oxidation mass gain rate and oxidation time accords with the linear increasing law.The composites as-deposited are in the amorphous state and turn into the crystal state at 400℃.The microstructures of oxidation film on the composites will change from the compact state to the loose state with increasing oxidation temperature to 800℃.They are still continuous and compact,and there are no crackle,strip and falling-out.CeO2 and SiO2 nano-particles co-deposited into Ni-W-P alloy can improve the high-temperature oxidation resistance.Ni-W-P matrix composites containing CeO2 and SiO2 nano-particles were prepared on common carbon steel surface by means of pulse electrodeposition, and the high-temperature oxidation behavior was investigated. The results show that when the oxidation time is controlled in 1 h, oxidation kinetics curve between oxidation mass gain rate and oxidation temperature of CeO2-SiO2/Ni-W-P composites accords with the index increasing law. When the oxidation temperature is controlled at 300 ℃, the kinetics curve between oxidation mass gain rate and oxidation time accords with the linear increasing law. The composites as-deposited are in the amorphous state and turn into the crystal state at 400 ℃. The microstructures of oxidation film on the composites will change from the compact state to the loose state with increasing oxidation temperature to 800 ℃. They are still continuous and compact, and there are no crackle, strip and falling-out. CeO2 and SiO2 nano-particles co-deposited into Ni-W-P alloy can improve the high-temperature oxidation resistance.

关 键 词：高温氧化行为 纳米复合材料 SIO2纳米粒子 高温抗氧化性能 脉冲电沉积 CeO2 氧化时间 温度控制 

分 类 号：TB33[一般工业技术—材料科学与工程]