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Effect of nickel aluminide microcrystalline coating on high-temperature oxidation behavior of NiAl-33.5%Cr-0.5%Zr alloy
Xu, CM; Guo, JT
Corresponding AuthorXu, CM()
2003-04-01
Source PublicationCORROSION
ISSN0010-9312
Volume59Issue:4Pages:350-355
AbstractThe effect of nickel aluminide (NiAl) microcrystalline coating prepared by magnetron-sputtering on the high-temperature oxidation behavior of the NiAl-33.5Cr-0.5Zr (at%) alloy was investigated in static air from 1,000degreesC to 1,150degreesC. The additions of Cr and Zr changed the single 0 phase structure into the multiphase structure (beta-NiAl, alpha-Cr. and Heusler [Ni2AlZr] phase). The NiAl-33.5Cr-0.5Zr alloy formed a nonprotective Al2O3 + Cr2O3 + ZrO2 (aluminum oxide + chromium oxide + zirconium dioxide) mixed scale and exhibited relatively large weight gains. The large weight gains were attributed to extensive internal oxidation. The sputtered NiAl microcrystalline coating remarkably improved the oxidation resistance compared to the NiAl-33.5Cr-0.5Zr alloy due to the formation of a continuous Al2O3 scalefrom 1,000degreesC to 1, 150degreesC. The metastable theta-Al2O3 --> alpha-Al2O3 transformation was identified by x-ray diffraction (XRD) results and a change in the morphology of scales also occurred with the transformation.
Keywordchromium multiphase alloy NiAl microcrystalline coating oxidation x-ray diffraction zirconium
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000182031200007
PublisherNATL ASSN CORROSION ENG
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/117743
Collection中国科学院金属研究所
Corresponding AuthorXu, CM
AffiliationChinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Xu, CM,Guo, JT. Effect of nickel aluminide microcrystalline coating on high-temperature oxidation behavior of NiAl-33.5%Cr-0.5%Zr alloy[J]. CORROSION,2003,59(4):350-355.
APA Xu, CM,&Guo, JT.(2003).Effect of nickel aluminide microcrystalline coating on high-temperature oxidation behavior of NiAl-33.5%Cr-0.5%Zr alloy.CORROSION,59(4),350-355.
MLA Xu, CM,et al."Effect of nickel aluminide microcrystalline coating on high-temperature oxidation behavior of NiAl-33.5%Cr-0.5%Zr alloy".CORROSION 59.4(2003):350-355.
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