Microstructural characteristics and degradation mechanism of the NiCrAlY/CrN/DSM11 system during thermal exposure at 1100 degrees C

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	Microstructural characteristics and degradation mechanism of the NiCrAlY/CrN/DSM11 system during thermal exposure at 1100 degrees C
	W. Z. Li; Y. Q. Li; C. Sun; Z. L. Hu; T. Q. Liang; W. Q. Lai
	2010
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	506 期号:1 页码:77-84
摘要	To limit the elemental interdiffusion, a CrN diffusion barrier was introduced into the interface of NiCrAlY overlayer and DSM11 substrate. During vacuum heat treatment and thermal exposure, the single and continuous CrN barrier layer was first changed to the multilayer structure and then to the Ti-rich interlayer. With the gradual loss of continuity in the diffusion barrier, the elemental interdiffusion was accelerated. Due to the interdiffusion, the transformation of beta-NiAl -> gamma'-Ni(3)Al -> gamma-Ni and the low Al level occurred in the overlayer. The phase transformation of metastable theta-Al(2)O(3) to stable a and the accelerated elemental interdiffusion affected the integrity of the surface scales. After 100 h exposure at 1100 degrees C, the Al element was insufficient and the duplex coatings were degraded. (c) 2010 Elsevier B.V. All rights reserved.
部门归属	[li, weizhou; li, yueqiao; hu, zhiliu; liang, tianquan; lai, wuquan] guangxi univ, sch mat sci & engn, nanning 530004, peoples r china. [li, weizhou; sun, chao] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;li, wz (reprint author), guangxi univ, sch mat sci & engn, 100 daxue rd, nanning 530004, peoples r china;wz-li@hotmail.com
关键词	Coatings Diffusion Barrier Interdiffusion Oxidation-resistance Microstructure Temperature Oxidation Behavior Barrier Coatings Diffusion Barrier Nicocraly Coatings O-n Interdiffusion Superalloy Interlayer Design Scale
URL	查看原文
WOS记录号	WOS:000282242700020
引用统计	被引频次：29[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/321006/31239
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Z. Li,Y. Q. Li,C. Sun,et al. Microstructural characteristics and degradation mechanism of the NiCrAlY/CrN/DSM11 system during thermal exposure at 1100 degrees C[J]. Journal of Alloys and Compounds,2010,506(1):77-84.
APA	W. Z. Li,Y. Q. Li,C. Sun,Z. L. Hu,T. Q. Liang,&W. Q. Lai.(2010).Microstructural characteristics and degradation mechanism of the NiCrAlY/CrN/DSM11 system during thermal exposure at 1100 degrees C.Journal of Alloys and Compounds,506(1),77-84.
MLA	W. Z. Li,et al."Microstructural characteristics and degradation mechanism of the NiCrAlY/CrN/DSM11 system during thermal exposure at 1100 degrees C".Journal of Alloys and Compounds 506.1(2010):77-84.