Study on Preparation and Performance of Composite Silicide Coating on Nb-W Alloy for Space Engine AITranslate
Abstract AITranslate
The laminated slurry melting method was used to prepare the composite silicide coating on Nb-W alloy,aiming at comprehensively improving the long-range oxidation resistance under static load and thermal shock resistance of the alloy.The results show that the coating has good resistance to high temperature and oxidation,with a static oxidation resistance of over 640 min at 1800℃and thermal shock resistance of over 680 times at 1700℃.It can also withstand the impingement of oxyacetylene flame at 1500℃for 3600 s.After the long-range oxidation test,the coating begins to deplete Si while the Nb content significantly increases due to diffusion.And as the Nb-rich oxides start to appear in the surface layer of the coating,the coating fails.In addition,there still is a mismatch of the thermal expansion coefficient between the coating and the Nb-W alloy,which results in macroscopic cracks in the coating after 680 times of thermal shock tests at 1700℃,thus leading to the failure of the coating.
KeyWords AITranslate
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Basic Information:
DOI：
Chinese Library Classification Number:TG178[金属学及工艺—金属表面处理]
Citation Information:
The laminated slurry melting method was used to prepare the composite silicide coating on Nb-W alloy,aiming at comprehensively improving the long-range oxidation resistance under static load and thermal shock resistance of the alloy.The results show that the coating has good resistance to high temperature and oxidation,with a static oxidation resistance of over 640 min at 1800℃and thermal shock resistance of over 680 times at 1700℃.It can also withstand the impingement of oxyacetylene flame at 1500℃for 3600 s.After the long-range oxidation test,the coating begins to deplete Si while the Nb content significantly increases due to diffusion.And as the Nb-rich oxides start to appear in the surface layer of the coating,the coating fails.In addition,there still is a mismatch of the thermal expansion coefficient between the coating and the Nb-W alloy,which results in macroscopic cracks in the coating after 680 times of thermal shock tests at 1700℃,thus leading to the failure of the coating.
quote
| GB/T 7714-2015 | [1] ZHAO Gang, LIU Jian, ZHOU Xiao-jun, et al. Study on Preparation and Performance of Composite Silicide Coating on Nb-W Alloy for Space Engine[J]. Rare Metals and Cemented Carbides, 2023(5): 44-49. |
| MLA | [1] ZHAO Gang, et al., "Study on Preparation and Performance of Composite Silicide Coating on Nb-W Alloy for Space Engine." Rare Metals and Cemented Carbides, no. 5, 2023, pp. 44-49. |
| APA | [1] ZHAO Gang, LIU Jian, ZHOU Xiao-jun, BAI Xiao-dong, & ZHANG Jing. (2023). Study on Preparation and Performance of Composite Silicide Coating on Nb-W Alloy for Space Engine. Rare Metals and Cemented Carbides(5), 44-49. |
| IEEE | [1] ZHAO Gang, LIU Jian, ZHOU Xiao-jun, BAI Xiao-dong, and ZHANG Jing, "Study on Preparation and Performance of Composite Silicide Coating on Nb-W Alloy for Space Engine," Rare Metals and Cemented Carbides, no. 5, pp. 44-49, 2023. keywords: {Nb-W alloy;composite coating;silicide;oxidation resistance;thermal shock resistance;flame impingement resistance} |