Studies on corrosion behavior of a single-crystal superalloy and its sputtered nanocrystalline coatings with solid NaCl deposit in O-2+38 vol.% H2O environment at 700 degrees C

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	Studies on corrosion behavior of a single-crystal superalloy and its sputtered nanocrystalline coatings with solid NaCl deposit in O-2+38 vol.% H2O environment at 700 degrees C
	Sun, Wenyao; Wang, Jinlong; Yang, Lanlan; Chen, Minghui; Bao, Zebin; Zheng, Chengyue; Zhu, Shenglong; Wang, Fuhui
	2019-12-01
Source Publication	CORROSION SCIENCE
ISSN	0010-938X
Volume	161
Abstract	Corrosion behavior of the N5 superalloy (Ni-7.0 Cr-6.2 Al-7.5 Co-5.0 W-1.5 Mo-6.5 Ta-3.0 Re) and two nanocrystalline coatings prepared by magnetron sputtering is investigated in chlorine and water vapor environment at 700 degrees C. The alloy shows low corrosion resistance. Its oxide scale spalls off readily and includes porous NiO outer layer and NiCr(Al)(2)O-4 inner one. The nanocrystalline coating performs better. Its oxide scale consists of Al2O3, NiO and Ta2O5. Chlorination and/or oxidation of Ta ruined compactness of scale. The yttrium modified nanocrystalline coating provides the highest corrosion resistance. Its scale is exclusively alumina. Yttrium inhibits the outward diffusion of Ta.
Keyword	Superalloys Metal coatings STEM Chlorination
Indexed By	SCI
Language	英语
WOS ID	WOS:000497887900010
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/80582
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Sun, Wenyao,Wang, Jinlong,Yang, Lanlan,et al. Studies on corrosion behavior of a single-crystal superalloy and its sputtered nanocrystalline coatings with solid NaCl deposit in O-2+38 vol.% H2O environment at 700 degrees C[J]. CORROSION SCIENCE,2019,161.
APA	Sun, Wenyao.,Wang, Jinlong.,Yang, Lanlan.,Chen, Minghui.,Bao, Zebin.,...&Wang, Fuhui.(2019).Studies on corrosion behavior of a single-crystal superalloy and its sputtered nanocrystalline coatings with solid NaCl deposit in O-2+38 vol.% H2O environment at 700 degrees C.CORROSION SCIENCE,161.
MLA	Sun, Wenyao,et al."Studies on corrosion behavior of a single-crystal superalloy and its sputtered nanocrystalline coatings with solid NaCl deposit in O-2+38 vol.% H2O environment at 700 degrees C".CORROSION SCIENCE 161(2019).

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