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Microstructure and Oxidation-resistance of Silicide Coatings on C-103 Niobium Alloys

WANG Yu; GAO Jia-Ping; LI Yun-Peng; HU Xing-Fang(Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)  
The microstructure of Ti-Cr-Si protective coatings modified by different additives onC-103 niobium alloys before and after oxidation and the influence of these additives on the structureand oxidation resistance of the silicide coatings were studied. The results show that the oxidationresistance of Ti-Cr-Si coating modified by Ge, Mo, W decreases, but the oxidation resistance ofTi-Cr-Si coating modified by Zr and Al increases at high temperature.
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