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Microwave Sintering of Tungsten Carbide Cobalt Hardmetals

Published online by Cambridge University Press:  10 February 2011

T. Gerdes ,
M. Willert-Porada  and
K. Rödiger
T. Gerdes
Affiliation:
University of Dortmund, Dept. Chem. Eng., Dortmund, FRG
M. Willert-Porada
Affiliation:
University of Dortmund, Dept. Chem. Eng., Dortmund, FRG
K. Rödiger
Affiliation:
WIDIA GmbH, Essen, FRG
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Abstract

The variety of possible microstructures obtained upon microwave sintering of hardmetals is described with regard to microwave specific heating mechanisms. While the reduction of processing time and temperature is evident, the influence of the microwave sintering process on the microstructure is not fully understood. From microwave sintering experiments at different power levels processes that depends on the local field strength are identified. The mechanical properties of microwave sintered tool bits are compared with commercial WC-Co hardmetals. An incising wear resistance of MW-sintered hardmetals for speed turning of cast iron is found.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 430: Symposium O – Microwave Processing of Materials V , 1996 , 45
Copyright
Copyright © Materials Research Society 1996

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References

Kolaska, I. H., Pulvermetallurgie der Hartmetalle, Fachverband Pulvermetallurgie, Hagen, 1992 Google Scholar
2. Gerdes, T., Willert-Porada, M., Microwave Sintering of Metal-Ceramic and Ceramic-Ceramic Composites, MRS Symp. Proc. Vol.347, p. 531–537, 1994 Google Scholar
3. Gerdes, T., Willert-Porada, M., Kolaska, H., Rödiger, K., Guidelines for Large Scale MW-Processing of Hardmetals, Ceram. Trans. 59, p. 423–431, 1995 Google Scholar