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.
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收藏
页码：6437 / 6441
页数：5
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