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Microwave Sintering of Tungsten Carbide Cobalt Hardmetals

  • T. Gerdes (a1), M. Willert-Porada (a1) and K. Rödiger (a2)

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.

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Kolaska, I. H., Pulvermetallurgie der Hartmetalle, Fachverband Pulvermetallurgie, Hagen, 1992
2. Gerdes, T., Willert-Porada, M., Microwave Sintering of Metal-Ceramic and Ceramic-Ceramic Composites, MRS Symp. Proc. Vol.347, p. 531537, 1994
3. Gerdes, T., Willert-Porada, M., Kolaska, H., Rödiger, K., Guidelines for Large Scale MW-Processing of Hardmetals, Ceram. Trans. 59, p. 423431, 1995

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Microwave Sintering of Tungsten Carbide Cobalt Hardmetals

  • T. Gerdes (a1), M. Willert-Porada (a1) and K. Rödiger (a2)

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