EFFECT OF NOTCH-ROOT RADIUS ON THE FRACTURE TOUGHNESS OF A FINE-GRAINED ALUMINA

被引：146

作者：

NISHIDA, T ^{[1
]}

HANAKI, Y ^{[1
]}

PEZZOTTI, G ^{[1
]}

机构：

[1] TOYOHASHI UNIV TECHNOL, DEPT MAT SCI, TOYOHASHI 441, JAPAN

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1994年 / 77卷 / 02期

关键词：

D O I：

10.1111/j.1151-2916.1994.tb07038.x

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 dependence of K(IC) on the notch-root radius has been examined for a notch radius as small as a few micrometers in a dense, fine-grained, polycrystalline alumina ceramic. The notch radius can be systematically varied by using a semimanual procedure in a special jig which polishes out rather than cuts the specimen. K(IC) is independent of the notch sharpness for notch-root radii <10 MUm. The results are critically compared with those obtained by other standard techniques and discussed in terms of residual compressive stresses introduced during the notching procedure.

引用

页码：606 / 608

页数：3

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