Self-healing behavior in MoSi2/borosilicate glass composite

被引：29
作者：
Tao, Xin [1 ]
Xu, Xiaojing [2 ]
Xu, Xiqing [1 ]
Hong, Wenhu [2 ]
Guo, Anran [1 ]
Hou, Feng [1 ]
Liu, Jiachen [1 ]
机构：
[1] Tianjin Univ, Minist Educ, Key Lab Adv Ceram & Machining Technol, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[2] China Acad Launch Vehicle Technol, Ctr Res & Dev, Beijing 100076, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2017年 / 37卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Self-healing; MoSi2; Borosilicate glass; Oxidation; THERMAL BARRIER COATINGS; MECHANICAL-PROPERTIES; INFRARED RADIATION; STRENGTH RECOVERY; OXIDATION; MOSI2; CERAMICS;
D O I：
10.1016/j.jeurceramsoc.2016.08.043
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 degrees C, and the healing of the scratch was observed after healing treatment at 900 degrees C and 1400 degrees C. Two kinds of possible mechanisms were proposed on the basis of morphology and elemental analyses of healing areas. The specimen treated at 900 degrees 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 degrees C had a dense healing area and the strength recovered 86.9% due to the viscous flow of borosilicate glass. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：871 / 875
页数：5
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