Authors:
Arnaud Leclef (1,2), Alexandre Mégret (1), Véronique Vitry (1), Arnaud Tricoteaux (2)
1- Metallurgy Unit, Faculty of Engineering, University of Mons, Belgium.
2- Céramaths, UPHF, France
Abstract:
The use of cobalt as binder for tungsten carbide raises more and more questions of environmental, health and societal ethics. The aim of this study is to find alternatives to cobalt as a binder for tungsten carbide.
The binders investigated for this study were FeMn-based binders. The latter were carbon-doped to prevent the presence of eta-phase. Expected results required HV30 > 1600, and fracture toughness > 10 MPa·m1/2.
The first aspect is to model the phases that were generated by the replacement of cobalt. Pseudo-binary phase diagrams have been performed. The second aspect was to process the alternative “WC – promising alternative binder” composites. The powder metallurgy method was chosen for this purpose. Vacuum sintering technology was used. The samples were then mechanically and morphologically characterized.
DOI:
https://doi.org/10.59499/EP246278247
