Self-healing behavior in MoSi₂/borosilicate glass composite

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• 作者：Xin Tao^a ; Xiaojing Xu^b ; Xiqing Xu^a ; Wenhu Hong^b ; Anran Guo^a ; Feng Hou^a ; Jiachen Liu^a ; ^{jcliutju@tju.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; ^{jcliutju@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Self-healing ; MoSi2 ; Borosilicate glass ; Oxidation
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：37
• 期：2
• 页码：871-875
• 全文大小：1980 K

文摘

The self-healing behavior of MoSi₂/borosilicate glass composite was investigated by comparing the flexure strength of pre-scratched specimens before and after healing treatment. The post-healing strength partially recovered when healing temperature was higher than 800 °C, and the healing of the scratch was observed after healing treatment at 900 °C and 1400 °C. Two kinds of possible mechanisms were proposed on the basis of morphology and elemental analyses of healing areas. The specimen treated at 900 °C showed a porous healing area and the strength recovered 28.6% resulted from the oxidation of MoSi₂ into MoO₃ and SiO₂. By contrast, the specimen treated at 1400 °C had a dense healing area and the strength recovered 86.9% due to the viscous flow of borosilicate glass.