Microwave sintering of hardmetals

Microwave sintering of hardmetals

Application of microwave radiation as a heat source for sintering of hardmetal is described. Sintering of hardmetal with microwaves leads to a finer microstructure because of lower sintering temperatures and shorter processing times. A further variant is the microwave reaction sintering of a powder...

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Bibliographic Details
Published in:International journal of refractory metals & hard materials Vol. 16; no. 4; pp. 409 - 416
Main Authors: Ro¨diger, K., Dreyer, K., Gerdes, T., Willert-Porada, M.
Format: Journal Article
Language:English
Published: Elsevier Ltd 1998
Subjects:
Hardmetal production
Hardmetals
Microstructure
Microwave sintering
Reaction sintering
WC-platelets
Reaction sintering
Microwave sintering
Microstructure
Hardmetal production
Hardmetals
WC-platelets
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Summary:Application of microwave radiation as a heat source for sintering of hardmetal is described. Sintering of hardmetal with microwaves leads to a finer microstructure because of lower sintering temperatures and shorter processing times. A further variant is the microwave reaction sintering of a powder mixture of metallic tungsten, carbon and cobalt to obtain finer microstructures than by the conventional route. Moreover, this process offers a great potential for simplifying and shortening the process sequence in hardmetal production. The in-situ formation of WC-platelets during microwave reaction sintering was observed.
ISSN:0263-4368
2213-3917
DOI:10.1016/S0263-4368(98)00050-X