EFFECT OF GRINDING ON CRACKS AND THE STRENGTH OF CERAMICS

被引：8

作者：

KIM, BA

ANDO, K

SATO, S

机构：

[1] NHK SPRING R&D CTR INC,KANAZAWA KU,YOKOHAMA 236,JAPAN

[2] YOKOHAMA NATL UNIV,FAC ENGN,HODOGAYA KU,YOKOHAMA,KANAGAWA 240,JAPAN

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1994年 / 17卷 / 02期

关键词：

D O I：

10.1111/j.1460-2695.1994.tb00800.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Five kinds of silicon nitride samples with different microstructure were prepared in order to examine the effect of sintering condition on grain size and mechanical properties. The degradation in strength of ceramics caused by grinding is investigated in detail. It is shown that the critical process zone size is closely related to the grinding process. Futhermore, the crack size caused by grinding is estimated by the process zone size failure criterion and the Newman-Raju formula. It can be concluded that the process zone size failure criterion is useful when evaluating the sensitivity of ceramics to grinding.

引用

页码：187 / 200

页数：14

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