Development of Ceramic Composites for Industrial Wood-Cutting Tools
Industrial wood cutting is a highly demanding application for cutting tool materials as a wedge angle of~50°,a tip radius in the 1 μmn 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.
Wood-Cutting-Tool Ceramic Composite Silicon Nitride Lanthana Lifetime
Jakob Kuebler Fernando Eblagon Thomas Graule Bruno Ehrle
Empa,Swiss Federal Laboratories for Materials Testing and Research,Laboratory for High Performance C OERTLI Werkzeuge AG,Hofstrasse 1,8181 Hoeri,Switzerland
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1062-1067
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）