Thermal shock cycling behavior of NiCoCrAlYSiB coatings on Ni-base superalloys - I. Accelerated oxidation attack

doi:10.1016/j.msea.2005.06.028

IMR OpenIR

	Thermal shock cycling behavior of NiCoCrAlYSiB coatings on Ni-base superalloys - I. Accelerated oxidation attack
	Wang, QM; Tang, YJ; Guo, MH; Ke, PL; Gong, J; Sun, C; Wen, LS
通讯作者	Sun, C()
	2005-10-15
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	406 期号:1-2 页码:337-349
摘要	NiCoCrAlYSiB coatings were obtained using an are ion plating technique on a directionally solidified Ni-base superalloy. Thermal shock resistance of the bare and coated specimens were investigated by cycling between high temperature (900, 1000 and 1050 degrees C) and room temperature (forced water quenching). The experienced attack during thermal shock cycling was studied by gravimetry, XRD, SEM and EDS. The results showed that bare alloys and coated specimens experienced aggravating oxidation under thermal shock cycling conditions. The coated specimens exhibited excellent thermal shock resistance and provided enough protective effect on the superalloys under thermal shock cycling conditions. The accelerated oxidation mechanism and crack formation and propagation in the coatings were also investigated. The accelerated oxidation can be attributed to the accelerating oxide formation and breakdown due to compressive stresses accumulation in the oxides due to oxide growth at high temperature and thermal mismatch during cooling. The formation and propagation of cracks formed in coatings can be attributed to tensile stresses in oxides generated by irreversible cyclic creep accumulation in the metallic coatings and the "wedging" effect of oxide protruded into the coatings. (c) 2005 Elsevier B.V. All rights reserved.
关键词	thermal shock cycling arc ion plating NiCoCrAlYSiB Ni-base superalloy accelerating oxidation
DOI	10.1016/j.msea.2005.06.028
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000232565100041
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82607
通讯作者	Sun, C
作者单位	Chinese Acad Sci, Met Res Inst, Div Surface Engn & Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, QM,Tang, YJ,Guo, MH,et al. Thermal shock cycling behavior of NiCoCrAlYSiB coatings on Ni-base superalloys - I. Accelerated oxidation attack[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2005,406(1-2):337-349.
APA	Wang, QM.,Tang, YJ.,Guo, MH.,Ke, PL.,Gong, J.,...&Wen, LS.(2005).Thermal shock cycling behavior of NiCoCrAlYSiB coatings on Ni-base superalloys - I. Accelerated oxidation attack.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,406(1-2),337-349.
MLA	Wang, QM,et al."Thermal shock cycling behavior of NiCoCrAlYSiB coatings on Ni-base superalloys - I. Accelerated oxidation attack".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 406.1-2(2005):337-349.