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High temperature oxidation of powder metallurgy two-phase Cu-Cr alloys under low oxygen pressure
Fu, GY; Niu, Y; Wu, WT
2000-06-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume10Issue:3Pages:353-357
AbstractThe 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.
Keywordtwo-phase Cu-Cr alloys oxidation low oxygen pressure
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000087794000015
PublisherALLERTON PRESS INC
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/110606
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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