Kinetics of compaction on of hot-pressed composite materials in the TiN-AlN system

被引：1

作者：

Mosina, TV ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, IN Frantsevich Inst Problems Mat Sci, UA-252143 Kiev, Ukraine

来源：

REFRACTORIES AND INDUSTRIAL CERAMICS | 2004年 / 45卷 / 06期

关键词：

Activation Energy; Shrinkage; Composite Material; Compaction; Isothermal Condition;

D O I：

10.1007/s11148-005-0026-1

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 kinetics of compaction of hot-pressed materials in the TiN - AlN system has been studied. The shrinkage of TiN - AlN composites (for an AlN concentration varying within 10 - 90 vol.%) occurs within 10 - 15 min in the temperature range 1750 - 1850 degrees C at a pressure of 65 MPa. The calculated activation energy for hot-pressed ceramic [50% TiN + 50% AlN] was found to be 5.0 eV, intermediate between the activation energies for neat TiN and AlN species. This implies that the sintering of hot-pressed heterophase mixtures characterized by a decrease of temperature tinder isothermal conditions is an activated process.

引用

页码：424 / 427

页数：4