RT Journal Article
T1 Production of Ultrafine Grained Hardmetals by Electrical Resistance Sintering
A1 Cintas, Jesús
A1 Astacio, Raquel
A1 Cuevas, Francisco
A1 Montes, Juan
A1 Weissgaerber, Thomas
A1 Lagos, Miguel
A1 Torres, Yadir
A1 Gallardo, José
AB In this work, powders of cemented ultrafine WC-6 wt.% Co were consolidated. The feasibility of the medium frequency electrical resistance sintering (MF-ERS) technique were studied to prevent WC grain growth during consolidation. Porosity and hardness were measured at different zones of the MF-ERS compacts. The compacts showed a slight inhomogeneity in their properties across their section, but it was controlled by choosing suitable values of the processing parameters. The optimal values for the material studied were current intensities between 7 and 8 kA and sintering times between 600 and 800 ms. The main achievement using this consolidation method was that sintered compacts essentially maintained the initial WC grain size. This was attained to processing times of less than 2 s, and without the need for using protective atmospheres.
SN 2075-4701
YR 2019
FD 2019
LA eng
NO Cintas , J , Astacio , R , Cuevas , F , Montes , J , Weissgaerber , T , Lagos , M , Torres , Y & Gallardo , J 2019 , ' Production of Ultrafine Grained Hardmetals by Electrical Resistance Sintering ' , Metals , vol. 9 , no. 2 , 159 , pp. 159 . https://doi.org/10.3390/met9020159
NO Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
DS TECNALIA Publications
RD 19 jul 2024