Development of ceramic composites for industrial wood-cutting tools

被引：6

作者：

Kuebler, Jakob ^{[1
]}

Eblagon, Fernando ^{[1
]}

Graule, Thomas ^{[1
]}

Ehrle, Bruno ^{[2
]}

机构：

[1] Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland

[2] OERTLI Werkzeuge AG, CH-8181 Hoeri, Switzerland

来源：

HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷

关键词：

wood-cutting-tool; ceramic composite; silicon nitride; lanthana; lifetime;

D O I：

10.4028/www.scientific.net/KEM.368-372.1062

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：

Industrial wood cutting is a highly demanding application for cutting tool materials as a wedge angle of similar to 50 degrees, a tip radius in the 1 mu m range, and high wear, temperature and corrosion resistance are needed. For this application Si3N4 based ceramic matrix composites (CMC) were developed. Cutting tests showed that reinforcing Si3N4 with 30 wt.% SiC gives a good balance between fracture toughness and wear resistance. The use of an yttria / lanthana sintering aid system resulted in a fine-grained microstructure without degrading the fracture toughness. Post heat treatment was essential for the integrity of the cutting edge. Finally, cutting tests proved that the CMC cutting tips had a 3-fold lifetime compared to tungsten carbide.

引用

页码：1062 / +

页数：2