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Oxidation behavior of powder metallurgy Cu-44wt%Cr-12wt%Fe alloy under different oxygen partial pressures at 800 degrees C
Zhang, K; Niu, Y; Li, YS
Corresponding AuthorZhang, K(kezhang@imr.ac.cn)
2004-06-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume33Issue:6Pages:207-210
AbstractThe oxidation of a two-phase ternary Cu-44Cr-12Fe (wt.%) alloy prepared by powder metallurgy (PM) has been studied at 800degreesC under low, intermediate and high oxygen pressures (LOP, IOP and HOP). The oxidation at HOP (1 atm O-2) produced quite complex oxide scales containing an outer CuO layer and an inner layer composed of a mixture of the oxides of the three metal components plus some double oxides (CuCr2O4 and FeCr2O4). The oxide formed at lop (10(-16) atm O-2), when copper is the only noble element, contains an outer layer of iron oxide followed by a region of internal oxidation of chromium with some iron. Finally, an exclusive external chromia oxide formed at LOP (10(-20) atm O-2), when the oxidation of both iron and copper was prevented. The oxidation rates of the alloy decreased gradually with the reduction of the oxygen pressure in the gas, and oxidation mechanism is discussed.
KeywordFe-Cu-Cr two-phase ternary alloys oxidation
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000222496500049
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81030
Collection中国科学院金属研究所
Corresponding AuthorZhang, K
AffiliationChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhang, K,Niu, Y,Li, YS. Oxidation behavior of powder metallurgy Cu-44wt%Cr-12wt%Fe alloy under different oxygen partial pressures at 800 degrees C[J]. RARE METAL MATERIALS AND ENGINEERING,2004,33(6):207-210.
APA Zhang, K,Niu, Y,&Li, YS.(2004).Oxidation behavior of powder metallurgy Cu-44wt%Cr-12wt%Fe alloy under different oxygen partial pressures at 800 degrees C.RARE METAL MATERIALS AND ENGINEERING,33(6),207-210.
MLA Zhang, K,et al."Oxidation behavior of powder metallurgy Cu-44wt%Cr-12wt%Fe alloy under different oxygen partial pressures at 800 degrees C".RARE METAL MATERIALS AND ENGINEERING 33.6(2004):207-210.
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