Resistance to Molten Superalloy at 1550 degrees C for Molybdenum Metal Core with a Silica/Silicide Coating

doi:10.3390/coatings11030275

IMR OpenIR

	Resistance to Molten Superalloy at 1550 degrees C for Molybdenum Metal Core with a Silica/Silicide Coating
	Zhang, Chong 1,2; Liu, Enze 2; Zheng, Zhi 2; Ning, Likui 2; Tong, Jian 2; Tan, Zheng 2; Li, Haiying 2
通讯作者	Liu, Enze(nzliu@imr.ac.cn)
	2021-03-01
发表期刊	COATINGS
卷号	11 期号:3 页码:11
摘要	This work designs a silica (SiO2) layer on a molybdenum metal core to provide new insights on the corrosion resistance of the silica/silicide coating in the Ni-based superalloy. The molybdenum substrate coated with MoSi2 by pack cementation was pre-oxidized to fabricate a cristobalite scale on the surface and the preoxidation specimens were chosen to examine the corrosion-resistant property by using a DSM11 superalloy at 1550 degrees C. In order to prepare a cristobalite layer, the microstructure evolution of a 40- mu m MoSi2 coating with the different oxidation parameters (temperature and time) was investigated. After casting test, the different casting results showed that the silicide layer was dissolved in the molten superalloy. However, the molybdenum matrix was found to be protected by the cristobalite layer, as well as accompanied by the cristobalite layer partially destroyed at the core/superalloy interfaces. Furthermore, the reason for the destruction of cristobalite layer was analyzed. The failure mechanism of the cristobalite layer was proposed during the cast process.
关键词	molybdenum metal core SiO2 layer Superalloy interfacial reactions
DOI	10.3390/coatings11030275
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000633586400001
出版者	MDPI
引用统计	被引频次：4[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/321006/161693
专题	中国科学院金属研究所
通讯作者	Liu, Enze
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chong,Liu, Enze,Zheng, Zhi,et al. Resistance to Molten Superalloy at 1550 degrees C for Molybdenum Metal Core with a Silica/Silicide Coating[J]. COATINGS,2021,11(3):11.
APA	Zhang, Chong.,Liu, Enze.,Zheng, Zhi.,Ning, Likui.,Tong, Jian.,...&Li, Haiying.(2021).Resistance to Molten Superalloy at 1550 degrees C for Molybdenum Metal Core with a Silica/Silicide Coating.COATINGS,11(3),11.
MLA	Zhang, Chong,et al."Resistance to Molten Superalloy at 1550 degrees C for Molybdenum Metal Core with a Silica/Silicide Coating".COATINGS 11.3(2021):11.