THE DEPENDENCE OF SURFACE DAMAGE-INDUCED BY ELECTRICAL-DISCHARGE MACHINING ON THE FRACTURE STRENGTH OF AL2O3-CR3C2 COMPOSITES

被引：20

作者：

FU, CT

LI, AK

机构：

[1] Material Research Laboratories, Industrial Technology Research Institute, Hsinchu

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1994年 / 39卷 / 02期

关键词：

ALUMINA; CHROMIUM CARBIDE; CERAMIC COMPOSITES; FRACTURE STRENGTH; ELECTRICAL-DISCHARGE MACHINING;

D O I：

10.1016/0254-0584(94)90189-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The feasibility of electrical-discharge machining (EDM) conducted on the Al2O3-Cr3C2 composites is explored for various contents and particle sizes of Cr3C2 in composites. The characteristics of surfaces after EDM were examined by scanning electron microscopy. The surface roughness after EDM, the material removal rate and the variation of fracture strength were studied in terms of EDM processing variables, e.g., pulse current, pulse duration time, and electrical polarity. Mechanisms for removal of Al2O3-Cr3C2 composites by EDM are also proposed.

引用

页码：129 / 135

页数：7

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