Fracture surface roughness and toughness of Al2O3-platelet reinforced glass matrix composites

被引：42

作者：

Boccaccini, AR

Winkler, V

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2BP, England

[2] Tech Univ Ilmenau, Inst Mat Technol, D-98684 Ilmenau, Germany

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2002年 / 33卷 / 01期

关键词：

discontinuous reinforcement; fracture toughness; glass matrix composites;

D O I：

10.1016/S1359-835X(01)00080-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The correlation between fracture surface roughness and fracture toughness of alumina platelet reinforced borosilicate glass matrix composites was investigated. With increasing volume fraction of platelets both fracture toughness and fracture surface roughness increase. The fracture roughness parameter Ra was determined by the profilometric technique. A linear correlation was found between the fracture toughness and the Ra values of the composites. Scanning electron microscopy observation of fracture surfaces confirmed that surface roughness is related to a crack deflection process. Crack deflection is thus one of the toughening mechanisms acting in these composites. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：125 / 131

页数：7

共 23 条

[1] Toughening and strengthening of glass by Al2O3 platelets [J].