The flexural strength at high temperature and oxidation behaviour of (Nb,Ti)C-Ni composite

被引：6
|
作者：
Cai, KF
Nan, CW
Yuan, RZ
Min, XM
机构：
[1] Natl. Lab. Adv. Technol. Mat. C., Wuhan University of Technology, Wuhan
来源：
CERAMICS INTERNATIONAL | 1996年 / 22卷 / 02期
关键词：
D O I：
10.1016/0272-8842(95)00075-5
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：
(Nb,Ti)C-Ni composite is prepared via hot isostatic pressing (HIP). Its flexural strength at elevated temperature is tested by means of three-point bending. The flexural strength, as a function of temperature, decreases at 700 degrees C, and more rapidly decreases with further increase in temperature. At 1000 degrees C, the flexural strength (about 325 MPa) is only 20% of that at room temperature. The oxidation behaviour of the composite in the temperature range from 850 degrees C to 1100 degrees C. is also studied. The composite is oxidized into TiO2, NiO and NiTiO3 at high temperature. The oxidation kinetics are parabolic, with an activation energy of 234 kJ/mol.
引用
收藏
页码：167 / 170
页数：4
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