Lifetime and Wear Behavior of Near Net Shaped Si 3 N 4 /SiC Wood Cutting Tools
Source abstract
Abstract
The introduction of ceramics into the market of wood cutting tools has been difficult because of the generally low toughness of ceramics which causes brittle failure. That is why the improvement of mechanical performance of ceramics with potential to be used as cutting tools is important. The newly developed Si 3 N 4 /SiC wood cutting tools have a bending strength of 740 MPa, a fracture toughness of 5.4 MPam 1/2 , a hardness of 16.8 GPa and a grain size of 1 μm. These Si 3 N 4 /SiC tools were tested in a lifetime cutting trial on wood and showed twice as long lifecycles than standard tungsten carbide tools. Furthermore, the static corrosion resistance in tannic acid, the friction coefficients between wood and the tool material and the cutting forces were measured for both the ceramic composite and the tungsten carbide tools.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Advanced Surface Polishing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory for High Performance Ceramics Empa Swiss Federal Laboratories for Materials Science and Technology CH‐8600 Dübendorf Switzerland
OERTLI Werkzeuge AG CH‐8181 Höri Switzerland
Institute of Ceramic, Glass and Construction Materials Technische Universität Bergakademie Freiberg D‐09599 Freiberg Germany
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