| Microstructural evolution at interfaces of thermal barrier coatings during isothermal oxidation | |
| Liu, Y. Z.; Zheng, S. J.; Zhu, Y. L.; Wei, H.; Ma, X. L.; sjzheng@imr.ac.cn; xlma@imr.ac.cn | |
| 2016 | |
| Source Publication | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| ISSN | 0955-2219 |
| Volume | 36Issue:7Pages:1765-1774 |
| Abstract | Using transmission electron microscopy, we investigate microstructural evolution at interfaces of a plasma sprayed thermal barrier coating system with an yttria-stabilized zirconia top coat and a NiCrAlY bond coat after isothermal oxidation at 1100 degrees C for up to 50 h. Interestingly, thermally grown oxide (TGO) layers split into two sub-layers. In principle, one of the two sub-layers comprises a mixture of alpha-Al2O3, Cr2O3 and Ni(Al, Cr)(2)O-4, while the other one consists of dense alpha-Al2O3 and Cr2O3. Main microstructural evolution of the TGO layers follows a similar sequence that: original phases -> alpha-Al2O3 + Cr2O3 -> alpha-Al2O3 + Cr2O3 + Ni(Al, Cr)(2)O-4. Particularly, after 50 h oxidation, gamma-Ni and NiO form in the upper TGO sub-layer at the top coat-bond coat interface, and gamma-Ni and alpha-Cr form in the upper TGO sub-layer at the bond coat-substrate interface. Moreover, gamma-Al and beta-Ti precipitate at the TGO-substrate interface after 50 h oxidation. (C) 2016 Elsevier Ltd. All rights reserved. |
| description.department | [liu, y. z.] univ sci & technol china, sch chem & mat sci, hefei 230026, peoples r china ; [liu, y. z. ; zheng, s. j. ; zhu, y. l. ; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [wei, h.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china |
| Keyword | Thermal Barrier Coating (Tbc) Interfaces Isothermal Oxidation Thermally Grown Oxide (Tgo) Transmission Electron Microscopy (Tem) |
| Funding Organization | National Basic Research Program of China [2010CB631206]; National Natural Science Foundation of China [50931004, 51071164, 51371173, 50671102, 11327901]; "Hundred Talents Project" of Chinese Academy of Sciences |
| Indexed By | sci |
| Language | 英语 |
| WOS ID | WOS:000372381300026 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/74969 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | sjzheng@imr.ac.cn; xlma@imr.ac.cn |
| Recommended Citation GB/T 7714 | Liu, Y. Z.,Zheng, S. J.,Zhu, Y. L.,et al. Microstructural evolution at interfaces of thermal barrier coatings during isothermal oxidation[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2016,36(7):1765-1774. |
| APA | Liu, Y. Z..,Zheng, S. J..,Zhu, Y. L..,Wei, H..,Ma, X. L..,...&xlma@imr.ac.cn.(2016).Microstructural evolution at interfaces of thermal barrier coatings during isothermal oxidation.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,36(7),1765-1774. |
| MLA | Liu, Y. Z.,et al."Microstructural evolution at interfaces of thermal barrier coatings during isothermal oxidation".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 36.7(2016):1765-1774. |
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