Abstract
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.
| Original language | English |
|---|---|
| Article number | 159 |
| Pages (from-to) | 159 |
| Number of pages | 1 |
| Journal | Metals |
| Volume | 9 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2019 |
Keywords
- Electrical resistance sintering
- Ultrafine grain
- Hardmetal
Project and Funding Information
- Project ID
- info:eu-repo/grantAgreement/EC/FP7/608729/EU/Energy Efficient Manufacturing Process of Engineering Materials/EFFIPRO
- Funding Info
- The authors are grateful to the EU for funding this research within the framework of the EU 7th_x000D_ Framework Programme, grant number FoF.NMP.2013-10 608729, Energy Efficient Process of Engineering Materials,_x000D_ EFFIPRO Project.