Authors:
Angel Biedma (1), Marcos García (1), Maria de Nicolás (2), Elena Gordo (1)
1- GTP – Department of Materials Science and Engineering, IAAB, Universidad Carlos III de Madrid, Spain
2- Sustainable Powder Technologies – IMDEA Materials Institute, Spain
Abstract:
Ti(C,N) cermets with Fe-based binders have shown promising potential as substitutes for Co-containing cermets and traditional hardmetals, offering reduced dependence on critical raw materials while maintaining comparable properties. However, certain aspects of Ti(C,N)-FeNiCr require further investigation to enhance its properties and understanding. This research explores the effects of sintering pressure through the development of combined cycles, which involve regulating vacuum levels and gas partial pressures. These cycles aim to address challenges such as N2 degassing from ceramic particles, binder volatilization, and densification. A combination of CALPHAD (CALculation of PHAse Diagrams) and experimental studies has been employed. Results demonstrate significant improvements achieved through combined cycles and controlled partial pressures, particularly in enhancing densification and controlling mass loss. This study has shown promising results, with mechanical properties comparable to other processing techniques. Overall, this study provides initial insights into optimizing sintering processes for Ti(C,N)-based cermets with no secondary carbides addition.
DOI:
https://doi.org/10.59499/EP246278433
