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Hard Metal Production by ERS: Processing Parameter Roles in Final Properties

1
Department of Materials and Transportation Engineering and Science, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos s/n, 41092 Sevilla, Spain
2
Industry and Transport Division, Tecnalia Research & Innovation, Mikeletegi Pasealekua, 2., 20009 San Sebastián, Spain
3
Branch Lab Dresden, Fraunhofer Institute for Manufacturing Technology and Advanced Materials, Winterbergstrasse, 28., 01277 Dresden, Germany
4
Department of Chemical Engineering, Physical Chemistry and Materials Science, Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Campus El Carmen, Avda, Tres de marzo s/n, 21007 Huelva, Spain
*
Author to whom correspondence should be addressed.
Metals 2019, 9(2), 172; https://doi.org/10.3390/met9020172
Received: 10 December 2018 / Revised: 24 January 2019 / Accepted: 31 January 2019 / Published: 2 February 2019
(This article belongs to the Special Issue Design of Cemented Carbides and Cermet)
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Abstract

Cemented carbide is a hard composite material, used widely in a variety of industries. The value of the global tungsten carbide market is expected to grow by 4.4% (compound annual growth rate) from 2017 to 2022. One of the main markets is in metal cutting and wear parts, where small pieces (or inserts), a few grams in weight, are used. Field-assisted sintering technique (FAST) technologies allow for the production of small blanks in a single step from powder, which are near final dimensions. Production cycles are very short. In this paper, one of the FAST processes, the ERS technology, is applied to obtain WC10Co parts. A review of the process variable effects on the final properties of the parts is accomplished. Final properties of a range of conventionally produced inserts are obtained, using 100 MPa compacting pressure, 80 MA/m2 of current density, and processing times of around 800 ms. View Full-Text
Keywords: electrical resistance sintering; cemented carbides; processing conditions electrical resistance sintering; cemented carbides; processing conditions
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Gallardo, J.M.; Agote, I.; Astacio, R.; Schubert, T.; Cintas, J.; Montes, J.M.; Torres, Y.; Cuevas, F.G. Hard Metal Production by ERS: Processing Parameter Roles in Final Properties. Metals 2019, 9, 172.

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