| OXIDATION RESISTANCE OF TIAL IMPROVED BY A COCRAL COATING | |
| TANIGUCHI, S; SHIBATA, T; ASANUMA, N; LUO, H; WANG, FH; WU, WT | |
| Corresponding Author | TANIGUCHI, S() |
| 1993-12-01 | |
| Source Publication | JOURNAL DE PHYSIQUE IV
 |
| ISSN | 1155-4339 |
| Volume | 3Issue:C9Pages:403-410 |
| Abstract | The oxidation behavior of TiAl coupons coated with a fine-grained Co-3OCr-4Al (mass %) layer of about 30 mum thickness was studied at 1100-1400 K in a flow of purified oxygen at atmospheric pressure for up to 500 ks. Three oxidation stages were recognized: initial transient, parabolic, and acceleration stages. However, at 1100 K a parabolic stage continues for more than 800 ks. The parabolic rate constants agree well with the reported values for alumina-former alloys. Voids are developed mainly at the scale/coating and coating/substrate interfaces as the oxidation proceeds. This is attributable to a slightly loose structure of the coating, its recrystallization during oxidation, and a Kirkendall effect due to preferential diffusion of Co into the substrate. The accelerated oxidation can be explained in terms of the formation of microcracks in convoluted scales. At 1400 K the growth of rutile on the scale seems to be additionally contributing to the acceleration. |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:A1993MY70800044 |
| Publisher | EDITIONS PHYSIQUE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/125981 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | TANIGUCHI, S |
| Affiliation | 1.OSAKA UNIV,GRAD SCH ENGN,OSAKA,JAPAN 2.CHINESE ACAD SCI,INST CORROS & PROTECT MET,SHENYANG 110015,PEOPLES R CHINA |
| Recommended Citation GB/T 7714 | TANIGUCHI, S,SHIBATA, T,ASANUMA, N,et al. OXIDATION RESISTANCE OF TIAL IMPROVED BY A COCRAL COATING[J]. JOURNAL DE PHYSIQUE IV,1993,3(C9):403-410. |
| APA | TANIGUCHI, S,SHIBATA, T,ASANUMA, N,LUO, H,WANG, FH,&WU, WT.(1993).OXIDATION RESISTANCE OF TIAL IMPROVED BY A COCRAL COATING.JOURNAL DE PHYSIQUE IV,3(C9),403-410. |
| MLA | TANIGUCHI, S,et al."OXIDATION RESISTANCE OF TIAL IMPROVED BY A COCRAL COATING".JOURNAL DE PHYSIQUE IV 3.C9(1993):403-410. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment