THICKNESS DEPENDENCE OF IMPACT DAMAGE BEHAVIOR IN SILICON-NITRIDE CERAMIC

被引：2

作者：

AKIMUNE, Y

AKIBA, T

HIROSAKI, N

OGASAWARA, T

机构：

[1] Materials Research Laboratory, Nissan Motor Co. Ltd, YMO, Yokosuka, 237, 1, Natsushima-cho

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1993年 / 11卷 / 05期

关键词：

D O I：

10.1016/0955-2219(93)90018-M

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The thickness dependence of the impact damage behavior of a silicon nitride ceramic was investigated. For specimens 1.0 mm in thickness, sudden strength degradation occurred over an impact velocity of approximately 250 m/s with Hertzian cone crack or bending fracture. Hertzian cone cracks in 1.0 mm specimens were thought to be enlarged by the scabbing effect. For 1.5-3.0 mm specimens, strength degradation occurred above a 380 m/s impact velocity with Hertzian cone crack. Therefore, the specimen thickness was related to crack initiation behavior resulting in the strength degradation.

引用

页码：425 / 429

页数：5

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