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Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C
Xiang, JH; Niu, Y; Gesmundo, F
Corresponding AuthorNiu, Y()
2004-06-01
Source PublicationOXIDATION OF METALS
ISSN0030-770X
Volume61Issue:5-6Pages:403-421
AbstractThe oxidation of two two-phase ternary Fe - Cu - Al alloys containing about 5 at.% aluminium, one Fe-rich and one Cu-rich, has been studied at 800degreesC under 1 atm O-2. The Fe- rich alloy (Fe - 15Cu - 5Al) shows two parabolic stages, with a large decrease of the parabolic rate constant after about 2 hr. The presence of 5 at.% Al reduces significantly the oxidation rate of this alloy with respect to a binary Fe- Cu alloy of similar composition by forming an external alumina scale. Moreover, the addition of 15 at.% Cu is able to reduce the critical aluminium content needed to form alumina scales with respect to binary Fe - Al alloys. On the contrary, the Cu-rich Fe - 85Cu-5Al alloy presents a single parabolic stage and forms a thick and porous external scale composed of an outermost layer of copper oxides and an inner region containing a mixture of copper and Fe - Al oxides, coupled to the internal oxidation of iron and aluminium. As a result, the oxidation of the Cu-rich ternary alloy at 800degreesC is much faster than that of the Fe- rich ternary alloy.
Keywordternary alloys iron-copper base oxidation aluminium effect
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000222171800004
PublisherKLUWER ACADEMIC/PLENUM PUBL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82061
Corresponding AuthorNiu, Y
Affiliation1.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Genoa, DICheP, I-16129 Genoa, Italy
Recommended Citation
GB/T 7714
Xiang, JH,Niu, Y,Gesmundo, F. Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C[J]. OXIDATION OF METALS,2004,61(5-6):403-421.
APA Xiang, JH,Niu, Y,&Gesmundo, F.(2004).Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C.OXIDATION OF METALS,61(5-6),403-421.
MLA Xiang, JH,et al."Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C".OXIDATION OF METALS 61.5-6(2004):403-421.
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