COLLOIDAL PROCESSING FOR PREPARATION OF LAMINATED COMPOSITES OF MULLITE/WOVEN FABRICS OF SI-TI-C-O FIBERS

被引：4

作者：

HIRATA, Y

TAKESHIMA, K

机构：

[1] Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, Kagoshima, 890

来源：

MATERIALS LETTERS | 1993年 / 17卷 / 06期

关键词：

D O I：

10.1016/0167-577X(93)90129-L

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A sol-gel-processed mullite powder and woven fabrics of Si-Ti-C-O fibers were formed into laminated composites (6 vol% woven fabrics). The green composites were hot-pressed to near full density at 1650 degrees C for 1 h at 39 MPa in a N-2 atmosphere. The strength and fracture toughness of the dense composites ( > 99% of theoretical density) were measured at room temperature. The fracture toughness for monolithic mullite (1.6 MPa m(1/2)) was increased to 3.9 MPa m(1/2) by the addition of the woven fabrics. On the other hand, there was no significant difference in the flexural strength between monolithic mullite and the composite.

引用

页码：374 / 378

页数：5