Crack -healing behaviour of zirconia/SiC composite ceramics

被引：12
作者：
Dept. of Mech. Eng., Oyama Nat. College of Tech., Nakakuki, Oyama, 323-0806, Japan [1 ]
不详 [2 ]
机构：
[1] Dept. of Mech. Eng., Oyama Nat. College of Tech., Nakakuki, Oyama
[2] Dept. of Energy and Safety. Eng., Yokohama N. U., Hodogaya-ku, Yokohama
来源：
Zairyo | 2009年 / 6卷 / 510-515期
关键词：
Arrhenius; Bending-strength; Ceramics; Crack healing; SiC-composite; Zirconia;
D O I：
10.2472/jsms.58.510
中图分类号：
学科分类号：
摘要：
ZrO2/SiC composite ceramics were sintered and subjected to three-point bending. A surface crack of 100/un in diameter was made on each specimen. We studied crack-healing behavior. The main conclusions are as follows. (1) ZrO2/SiC composite ceramics could heal a crack. Then the best healing condition is 800°C x 30h in air. (2) A crack was healed even at 600°C, which was a very low temperature compared with other ceramics. (3) The ZrC2/Y2O3/SiC system ceramics caused an extensive corrosion at over 1000°C. (4) Healing temperature and the minimum -time to heal were in the good proportional relation on the Arrhenius diagram at 600-800°C. © 2009 The Society of Materials Science, Japan.
引用
收藏
页码：510 / 515
页数：5
相关论文
共 7 条
[1]  
K Ando, Houjyou K., Chu M.C., Takeshita S., Takahashi K., Sakamoto S., Sato S., Crack-healing behaviour of Si<sub>3</sub>N<sub>4</sub>/SiC ceramics under stress and fatigue strength at the temperature of healing (1000°C), Journal of the European Ceramic Society, 22, pp. 1339-1346, (2002)
[2]  
Kim B.S., Ando K., Chu M.C., Sato S., Crack-healing behavior of monolithic alumina and strength of crack-healed member, Journal of the Society of Materials Science, Japan, 52, 6, pp. 667-673, (2003)
[3]  
Hori S., Kyoujin Jirukonia, pp. 106-112, (1990)
[4]  
Nakatani M., Ando K., Houjou K., Oxidation behaviour of Si<sub>3</sub>N<sub>4</sub>/Y<sub>2</sub>O <sub>3</sub> system ceramics and effect of crack-healing treatment on oxidation, Journal of the European Ceramic Society, 28, pp. 1251-1257, (2008)
[5]  
Testing methods for bending strength of fine ceramics, Japan Standard Association, Japan, (2003)
[6]  
Ando K., Chu M.C., Kobayashi Y., Yao F., Sato S., Crack healing behaviour and high temperature strength of silicon nitride ceramics, Japan Society of Mechanical Engineers, 65, A, pp. 1132-1139, (1999)
[7]  
Ando K., Furusawa K., Takahashi K., Sato S., Crackhealing ability of structural ceramics and a new methodology to guarantee the structural integrity using the ability and proof-test, Journal of the European Ceramic Society, 25, pp. 549-558, (2005)
1