Paper Title:
Development of Ceramic Composites for Industrial Wood-Cutting Tools
  Abstract

Industrial wood cutting is a highly demanding application for cutting tool materials as a wedge angle of ~50°, a tip radius in the 1 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.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
1062-1067
DOI
10.4028/www.scientific.net/KEM.368-372.1062
Citation
J. Kübler, F. Eblagon, T. Graule, B. Ehrle, "Development of Ceramic Composites for Industrial Wood-Cutting Tools", Key Engineering Materials, Vols. 368-372, pp. 1062-1067, 2008
Online since
February 2008
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Price
$32.00
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