THERMAL-STABILITY OF AN SCS-6/TI-22AL-23NB COMPOSITE

被引：29

作者：

HALL, IW

NI, CY

机构：

[1] Materials Science Program, University of Delaware, Newark

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 192卷

关键词：

TITANIUM; ALUMINUM; COMPOSITES; NIOBIUM;

D O I：

10.1016/0921-5093(94)03343-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Titanium aluminide matrix composites were subjected to isothermal exposure treatments in an inert atmosphere at temperatures up to 800 degrees C and for times up to 1000 h. Specimens were examined by transmission and scanning electron microscopy to investigate the effect of these treatments on the fiber-matrix interfacial reaction. The reaction layer increases a little in thickness with increasing exposure times and temperatures. The products of these reactions were identified and, at shorter times and lower temperatures, are primarily carbides and silicides based on TiC and Ti5Si3. After isothermal treatments at the longest times and highest temperatures, a new phase based on Ti3Si appears. The thermal stability characteristics of this composite appear to be superior to those of comparable systems.

引用

页码：987 / 993

页数：7