Studies on High Temperature Oxidation of Electrodeposited RE-Ni-W-P-SiC Composite Materials
来源期刊：材料热处理学报2004年第5期
论文作者：XU Rui-dong ZHU Xiao-yun GUO Zhong-cheng
关键词：RE-Ni-W-P-SiC composite coating; high temperature-oxidation; microstructure;
摘 要：The oxidation of the Electrodeposited RE-Ni-W-P-SiC Composite materials at high temperature is investigated.The results show that during high temperature oxidation the relationship between the mass change of pure Ni, Ni-W-P,Ni-W-P-SiC or RE-Ni-W-P-SiC coatings and the oxidation time follows a mixed curve, i.e. it is approximately a linear relationship when the oxidation time is less than 60 mins while it is a power function relationship when the oxidation time is over 60 mins. The order for the oxidation rate of the four coatings is Ni＞ Ni-W-P＞ Ni-W-P-SiC＞RE-Ni-W-P-SiC. The mass change of Ni-W-P, Ni-W-P-SiC or RE-Ni-W-P-SiC coatings increases exponentially with a rise of oxidation temperature. The high temperature-oxidation resistance of RE-Ni-W-P-SiC composite material is 3～4 times than that of Ni-W-P alloy coating. The cross section morphologies and X-ray diffraction patterns indicate that the high temperature-oxidation resistance of RE-Ni-W-P-SiC composite coating is better than any other coatings.
XU Rui-dong1，ZHU Xiao-yun1，GUO Zhong-cheng1
(1.The Center of New Materials and Surface Engineering Research and Development, Kunming University of Science and Technology, Kunming, 650093, P.R. China)
摘要:The oxidation of the Electrodeposited RE-Ni-W-P-SiC Composite materials at high temperature is investigated.The results show that during high temperature oxidation the relationship between the mass change of pure Ni, Ni-W-P,Ni-W-P-SiC or RE-Ni-W-P-SiC coatings and the oxidation time follows a mixed curve, i.e. it is approximately a linear relationship when the oxidation time is less than 60 mins while it is a power function relationship when the oxidation time is over 60 mins. The order for the oxidation rate of the four coatings is Ni＞ Ni-W-P＞ Ni-W-P-SiC＞RE-Ni-W-P-SiC. The mass change of Ni-W-P, Ni-W-P-SiC or RE-Ni-W-P-SiC coatings increases exponentially with a rise of oxidation temperature. The high temperature-oxidation resistance of RE-Ni-W-P-SiC composite material is 3～4 times than that of Ni-W-P alloy coating. The cross section morphologies and X-ray diffraction patterns indicate that the high temperature-oxidation resistance of RE-Ni-W-P-SiC composite coating is better than any other coatings.
关键词:RE-Ni-W-P-SiC composite coating; high temperature-oxidation; microstructure;
【全文内容正在添加中】
