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Effect of grain size on the oxidation behavior of Cu-20Ni-20Cr alloy
Cao, ZQ; Niu, Y; Wu, WT
Corresponding AuthorCao, ZQ(caozhongqiu@hotmail.com)
2003-12-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume32Issue:12Pages:1016-1020
AbstractIn order to study the effect of grain size on the oxidation behavior of ternary multi-phase alloys, ternary Cu-20Ni-20Cr alloys were prepared at 700degreesC - 800degreesC in pure O-2 using are-melting(CA) and mechanical alloying(MA), respectively. The results show that for CA-Prepared Cu-20Ni-20Cr, no continue Cr2O3 film is formed on the surface of cast alloy, instead a complex oxidation films structure is formed made up of all the component oxides on the other hand with the fine-granular(nano-meter scale) MA-Prepared Cu-20Ni-2OCr alloy, oxidation at 700degreesC resulted in a film structure of 3 layers- (i) an outer CuO layer, (ii) an intermediate layer containing a mixture of Cu2O, NiO and Cr2O3, and (iii) an inner discontinuous Cr2O3 layer at 800degreesC no continuous Cr2O3 film forms on the surface. It is found that the finer grains reduced the critical concentration of the active element Cr suitable for the formation of Cr2O3 oxidation film on the alloy surface.
KeywordCu-Ni-Cr alloy grain fining multi-phase microstructure high temperature oxidation
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000187912400012
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/117852
Collection中国科学院金属研究所
Corresponding AuthorCao, ZQ
Affiliation1.Shenyang Normal Univ, Shenyang 110034, Peoples R China
2.Chinese Acad Sci, Met Res Inst, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Cao, ZQ,Niu, Y,Wu, WT. Effect of grain size on the oxidation behavior of Cu-20Ni-20Cr alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2003,32(12):1016-1020.
APA Cao, ZQ,Niu, Y,&Wu, WT.(2003).Effect of grain size on the oxidation behavior of Cu-20Ni-20Cr alloy.RARE METAL MATERIALS AND ENGINEERING,32(12),1016-1020.
MLA Cao, ZQ,et al."Effect of grain size on the oxidation behavior of Cu-20Ni-20Cr alloy".RARE METAL MATERIALS AND ENGINEERING 32.12(2003):1016-1020.
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