High temperature oxidation of powder metallurgy two-phase Cu-Cr alloys under low oxygen pressure

IMR OpenIR

	High temperature oxidation of powder metallurgy two-phase Cu-Cr alloys under low oxygen pressure
	Fu, GY ; Niu, Y ; Wu, WT
	2000-06-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	10 期号:3 页码:353-357
摘要	The oxidation of two-phase Cu-Cr alloys containing 25% and 50% Cr prepared by powder metallurgy (PM) with a rather uniform two-phase microstructure has been studied at 700 similar to 900 degrees C under oxygen pressure below the stability of the copper oxides. The two PM alloys oxidized very slowly and formed only external Cr2O3 scales rather than undergoing an internal oxidation of chromium. This result is attributed mainly to a supply of chromium from the small Cr-rich particles dispersed within the Cu-rich phase. The oxidation kinetics of the two PM Cu-Cr alloys approximately followed the parabolic rate law. The scaling rates are of the same order as those measured for pure chromium under the same oxygen pressure, but smaller than those for the alloys of similar composition prepared by normal are melting techniques, whose compositions were largely non-uniform. The results are interpreted in terms of the two-phase nature of these alloys.
关键词	two-phase Cu-Cr alloys oxidation low oxygen pressure
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000087794000015
出版者	ALLERTON PRESS INC
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/110602
专题	中国科学院金属研究所
作者单位	1.Chinese Acad Sci, Inst Corros & Protect Met, State Ket Lab Corros & Protect, Shenyang 110015, Peoples R China 2.Shenyang Inst Chem Technol, Dept Chem Machinery, Shenyang 110021, Peoples R China
推荐引用方式 GB/T 7714	Fu, GY,Niu, Y,Wu, WT. High temperature oxidation of powder metallurgy two-phase Cu-Cr alloys under low oxygen pressure[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2000,10(3):353-357.
APA	Fu, GY,Niu, Y,&Wu, WT.(2000).High temperature oxidation of powder metallurgy two-phase Cu-Cr alloys under low oxygen pressure.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,10(3),353-357.
MLA	Fu, GY,et al."High temperature oxidation of powder metallurgy two-phase Cu-Cr alloys under low oxygen pressure".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 10.3(2000):353-357.