| Resistance to Molten Superalloy at 1550 degrees C for Molybdenum Metal Core with a Silica/Silicide Coating | |
| Zhang, Chong1,2; Liu, Enze2; Zheng, Zhi2; Ning, Likui2; Tong, Jian2; Tan, Zheng2; Li, Haiying2 | |
| Corresponding Author | Liu, Enze(nzliu@imr.ac.cn) |
| 2021-03-01 | |
| Source Publication | COATINGS
 |
| Volume | 11Issue:3Pages:11 |
| Abstract | 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. |
| Keyword | molybdenum metal core SiO2 layer Superalloy interfacial reactions |
| DOI | 10.3390/coatings11030275 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied |
| WOS ID | WOS:000633586400001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161693 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Enze |
| Affiliation | 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 |
| Recommended Citation 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. |
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