Effect of addition of metal carbide on the oxidation behaviors of titanium matrix composites

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• 作者：Liu Yanbin^a ; ^b ; Liu Yong^b ; ^{yonliu11@aliyun.com" class="auth_mail} ; Zhao Zhongwei^a ; Chen Yanhui^c ; Tang Huiping^d
• 关键词：Titanium matrix composite ; Oxidation behavior ; Powder metallurgy
• 刊名：Journal of Alloys and Compounds
• 出版年：25 June, 2014
• 年：2014
• 卷：599
• 期：Complete
• 页码：188-194
• 全文大小：2782 K

文摘

The oxidation behaviors of titanium matrix composites fabricated by reactive sintering of Ti + Mo₂C and Ti + VC compacts were studied. From the mass gain after the oxidation, Mo₂C additive was beneficial and the oxidation resistance did not increase with the addition; while VC additive was detrimental. Microstructural analyses show that a protective oxide layer forms on the surface of Ti + x%Mo₂C composites after high temperature exposure. In contrast, the oxide layer formed on the Ti + x%VC composites is not protective. The effects of Mo, V, TiC on the oxidation mechanism of TMCs were also discussed.