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OXIDIZING-SULFIDIZING CORROSION OF Ni-xCr-10Al ALLOYS AT 700-800 degrees C
Lu Lanying1; Pan Taijun2; Niu Yan1
Corresponding AuthorNiu Yan(yniu@imr.ac.cn)
2011-08-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume47Issue:8Pages:1026-1031
AbstractThe corrosion behavior of Ni-10Al and Ni-xCr-10Al (x=3, 5, 10) alloys at 700-800 degrees C in H(2)-H(2)S-CO(2) mixtures was studied. The addition of Cr resulted in a significant reduction of the corrosion rate of the Ni-10Al alloy: at 700 degrees C the corrosion of Ni-10Al alloy showed a linear kinetic law, but Ni-xCr-10Al followed the multi-stage parabolic rate law; at 800 degrees C the corrosion of all the alloys followed a quasi-parabolic rate law. Ni-10Al alloy formed a complex scale of Ni(3)S(2) and Al(2)O(3), whereas Ni-3Cr-10Al formed an irregular scale of Al(2)O(3) with a CrS inner corrosion region, and a thin layer of Al(2)O(3) formed on Ni-5Cr-10Al and Ni-10Cr-10Al alloys. The equilibrium partial pressures of oxygen and sulfur in the mixed gases were calculated to estimate the possible reactions between the alloy components and the gaseous atmosphere, and the corrosion mechanisms were also discussed.
KeywordNi-Cr-Al alloy oxidation sulfidation Cr
Funding OrganizationNational Natural Science Foundation of China
DOI10.3724/SP.11037.2011.00145
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50971129]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000295420400010
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/104198
Collection中国科学院金属研究所
Corresponding AuthorNiu Yan
Affiliation1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
2.Changzhou Univ, Dept Mat Sci & Engn, Changzhou 213164, Peoples R China
Recommended Citation
GB/T 7714
Lu Lanying,Pan Taijun,Niu Yan. OXIDIZING-SULFIDIZING CORROSION OF Ni-xCr-10Al ALLOYS AT 700-800 degrees C[J]. ACTA METALLURGICA SINICA,2011,47(8):1026-1031.
APA Lu Lanying,Pan Taijun,&Niu Yan.(2011).OXIDIZING-SULFIDIZING CORROSION OF Ni-xCr-10Al ALLOYS AT 700-800 degrees C.ACTA METALLURGICA SINICA,47(8),1026-1031.
MLA Lu Lanying,et al."OXIDIZING-SULFIDIZING CORROSION OF Ni-xCr-10Al ALLOYS AT 700-800 degrees C".ACTA METALLURGICA SINICA 47.8(2011):1026-1031.
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