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OXIDATION RESISTANCE OF TIAL IMPROVED BY COCRAL AND COCRALY COATING
TANIGUCHI, S; ASANUMA, N; SHIBATA, T; WANG, FH; LOU, HY; WU, WT
Corresponding AuthorTANIGUCHI, S()
1993-07-01
Source PublicationJOURNAL OF THE JAPAN INSTITUTE OF METALS
ISSN0021-4876
Volume57Issue:7Pages:781-789
AbstractOxidation resistance of TiAl coupons coated with Co-30Cr-4Al and Co-30Cr-4Al-0.2Y (mass%) coatings has been assessed by isothermal oxidation test in a temperature range 1100 to 1400 K and by cyclic oxidation test at 1200 K. The coating, consisting of very fine grains, was prepared by magnetron sputtering with resulting thicknesses of 30-40 mum. Both the coatings are very effective to suppress the oxidation below 1300 K. This effect is attributable to the formation of alpha-alumina scales. However, after long oxidation periods, the oxidation manner changes from parabolic to accelerated oxidation. This acceleration is explained in terms of local growth of rutile on the scale. Relatively large voids are formed at the scale/coating interface, within the coating, and the coating/substrate interface. The addition of Y to the coating results in the flat scales with no voids at the scale/coating interface, though the oxidation rate slightly increases and the recrystallization of the coating is delayed.
KeywordCOCRAL COCRALY COATING TIAL HIGH TEMPERATURE OXIDATION RESISTANCE AL2O3 SCALE
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:A1993LP50900009
PublisherJAPAN INST METALS
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/126550
Collection中国科学院金属研究所
Corresponding AuthorTANIGUCHI, S
AffiliationCHINESE ACAD SCI, INST CORROS & PROTECT MET, CORROS SCI LAB, SHENYANG, PEOPLES R CHINA
Recommended Citation
GB/T 7714
TANIGUCHI, S,ASANUMA, N,SHIBATA, T,et al. OXIDATION RESISTANCE OF TIAL IMPROVED BY COCRAL AND COCRALY COATING[J]. JOURNAL OF THE JAPAN INSTITUTE OF METALS,1993,57(7):781-789.
APA TANIGUCHI, S,ASANUMA, N,SHIBATA, T,WANG, FH,LOU, HY,&WU, WT.(1993).OXIDATION RESISTANCE OF TIAL IMPROVED BY COCRAL AND COCRALY COATING.JOURNAL OF THE JAPAN INSTITUTE OF METALS,57(7),781-789.
MLA TANIGUCHI, S,et al."OXIDATION RESISTANCE OF TIAL IMPROVED BY COCRAL AND COCRALY COATING".JOURNAL OF THE JAPAN INSTITUTE OF METALS 57.7(1993):781-789.
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