Microstructural evolution at interfaces of thermal barrier coatings during isothermal oxidation

IMR OpenIR

	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
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	36 期号:7 页码:1765-1774
摘要	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.
部门归属	[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
关键词	Thermal Barrier Coating (Tbc) Interfaces Isothermal Oxidation Thermally Grown Oxide (Tgo) Transmission Electron Microscopy (Tem)
资助者	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
收录类别	sci
语种	英语
WOS记录号	WOS:000372381300026
引用统计	被引频次：50[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74969
专题	中国科学院金属研究所
通讯作者	sjzheng@imr.ac.cn; xlma@imr.ac.cn
推荐引用方式 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.