High-temperature performance of (Ni,Pt)Al coatings on second-generation Ni-base single-crystal superalloy at 1100 degrees C: Effect of excess S impurities

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	High-temperature performance of (Ni,Pt)Al coatings on second-generation Ni-base single-crystal superalloy at 1100 degrees C: Effect of excess S impurities
	Yu, C. T.; Liu, H.; Ullah, A.; Bao, Z. B.; Zhu, S. L.; Wang, F. H.
	2019-10-01
Source Publication	CORROSION SCIENCE
ISSN	0010-938X
Volume	159
Abstract	Acidic and basic single-phase beta-(Ni,Pt)Al coatings were prepared by Pt electroplating (employing acidic and alkaline Pt-plating baths, respectively) and gaseous phase aluminizing. In both isothermal and cyclic oxidation tests at 1100 degrees C, the acidic (Ni,Pt)Al coating showed inferior oxidation resistance compared to the basic coating. The poorer oxidation performance and higher scale spallation tendency of the acidic (Ni,Pt)Al coating was attributed to the presence of excess S, which deteriorated oxide scale adherence by promoting the formation of pores and cracks under Al2O3 scale. The void formation mechanism and detrimental role of excess S in state-of-the-art Pt-modified aluminide coatings are discussed.
Keyword	Pt-modified aluminide coating S impurity Oxidation Thermally grown oxide Spallation
Indexed By	SCI
Language	英语
WOS ID	WOS:000488143500006
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Citation statistics	Cited Times:2[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/80726
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Yu, C. T.,Liu, H.,Ullah, A.,et al. High-temperature performance of (Ni,Pt)Al coatings on second-generation Ni-base single-crystal superalloy at 1100 degrees C: Effect of excess S impurities[J]. CORROSION SCIENCE,2019,159.
APA	Yu, C. T.,Liu, H.,Ullah, A.,Bao, Z. B.,Zhu, S. L.,&Wang, F. H..(2019).High-temperature performance of (Ni,Pt)Al coatings on second-generation Ni-base single-crystal superalloy at 1100 degrees C: Effect of excess S impurities.CORROSION SCIENCE,159.
MLA	Yu, C. T.,et al."High-temperature performance of (Ni,Pt)Al coatings on second-generation Ni-base single-crystal superalloy at 1100 degrees C: Effect of excess S impurities".CORROSION SCIENCE 159(2019).

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