DEPENDENCE OF CERAMIC FRACTURE PROPERTIES ON POROSITY

被引：109

作者：

WAGH, AS ^{[1
]}

SINGH, JP ^{[1
]}

POEPPEL, RB ^{[1
]}

机构：

[1] UNIV W INDIES,DEPT PHYS,MAT LAB,KINGSTON 7,JAMAICA

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 13期

关键词：

D O I：

10.1007/BF01159841

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A connected-grain model developed earlier to study the modulus of elasticity as a power-law of density was extended to study the dependence of the flexural strength of polycrystalline ceramics on porosity. Relations were derived for specific surface fracture energy, fracture toughness and flexural strength as power laws of (1 - p), where p is porosity. Model validity was confirmed with data on alpha-alumina, UO2, Si3N4, and the YBa2Cu3O7-delta superconductor.

引用

页码：3589 / 3593

页数：5

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