FABRICATION AND CHARACTERIZATION OF POLYMER-DERIVED SI2N2O-ZRO2 NANOCOMPOSITE CERAMICS

被引：15

作者：

SGLAVO, VM ^{[1
]}

DALMASCHIO, R ^{[1
]}

SORARU, GD ^{[1
]}

BELLOSI, A ^{[1
]}

机构：

[1] CNR,IST RICERCHE TECNOL CERAM,I-48018 FAENZA,ITALY

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 23期

关键词：

D O I：

10.1007/BF01352209

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amorphous Si-Zr-N-O powders, obtained by nitridation in an NH3 flow of zirconium modified polycarbosilane, have been sintered to full density by hot pressing at 1500-degrees-C. The resulting ceramic shows an extremely fine-grained microstructure composed of Si2N2O and ZrO2 crystallites 20-30 nm in diameter. Thermal stability measured in air appears excellent up to 1300-degrees-C for 48 h. Mechanical characterization pointed out good values of flexural strength (330 M Pa), fracture toughness (4.1 MPa m0.5) and Weibull modulus.

引用

页码：6437 / 6441

页数：5

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