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Oxidation and hot-corrosion behavior of sputtered Ti-48Al-8Cr-2Ag nanocrystalline coating
Xi, YJ; Wang, FH; He, LL
Corresponding AuthorXi, YJ(Fhwang@icpm.syb.ac.cn)
2004
Source PublicationHIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS
ISSN0255-5476
Volume461-464Pages:1181-1188
AbstractMagnetron-sputter deposition was used to produce a Ti-48Al-8Cr-2Ag (at.%) coating on a cast alloy substrate with the same composition. The oxidation behavior of the cast Ti-48Al-8Cr-2Aa alloy and its sputtered coating was investigated in air at 800degreesC-1000degreesC. Hot corrosion was carried out in molten 75% Na2SO4 + 25% K2SO4 at 900degreesC. The results indicated that the oxidation rate of sputtered nanocrystalline coating was lower than that of the cast alloy at 900degreesC. The former formed a scale of merely Al2O3 and the latter formed a scale of Al2O3 + TiO2 mixture. For the same reason, the sputtered nanocrystalline coating exhibited much better hot corrosion resistance than the cast alloy in molten 75% Na2SO4 + 25% K2SO4 at 900degreesC. However, the nanocrystalline showed a little bit higher oxidation rate than the cast alloy at 800degreesC and 1000degreesC, because spherical surface and boundaries or free surface between columnar of the coating gave a larger actual oxidation area than the original alloy.
KeywordTiAlCrAg nanocrystalline coating high temperature oxidation hot corrosion
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000223339700140
PublisherTRANS TECH PUBLICATIONS LTD
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/119905
Collection中国科学院金属研究所
Corresponding AuthorXi, YJ
Affiliation1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Xi, YJ,Wang, FH,He, LL. Oxidation and hot-corrosion behavior of sputtered Ti-48Al-8Cr-2Ag nanocrystalline coating[J]. HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS,2004,461-464:1181-1188.
APA Xi, YJ,Wang, FH,&He, LL.(2004).Oxidation and hot-corrosion behavior of sputtered Ti-48Al-8Cr-2Ag nanocrystalline coating.HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS,461-464,1181-1188.
MLA Xi, YJ,et al."Oxidation and hot-corrosion behavior of sputtered Ti-48Al-8Cr-2Ag nanocrystalline coating".HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS 461-464(2004):1181-1188.
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