Porous silicon nitride from fine/coarse powder mixture

被引：0

作者：

Ishizaki, M ^{[1
]}

Nishi, M ^{[1
]}

Shigegaki, Y ^{[1
]}

Sasa, T ^{[1
]}

机构：

[1] Ishikawajima Harima Heavy Ind Co Ltd, Dept Mat Technol, Koto Ku, Tokyo 1358732, Japan

来源：

25TH ANNUAL CONFERENCE ON COMPOSITES, ADVANCED CERAMICS, MATERIALS, AND STRUCTURES: B | 2001年 / 22卷 / 04期

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Porous silicon nitride was sintered from powder mixtures of fine and coarse grain powders, and the relationship of porosity and mechanical properties was studied. The shape of the pore was equiaxial with the typical diameter of 8 pin. The bending strength and the elastic modulus of the specimen with 30% porosity were 250 MPa and 145 GPa, respectively. The weight increase by oxidation at 1400 degreesC in air showed saturation within 10 hours of the specimen with sintering agent of Y(2)O(3) + Al(2)O(3), whereas that of Yb(2)O(3) + SiO(2) did not show saturation after 50 hours.

引用

页码：137 / 144

页数：8