Repositorio de producción científica de la Universidad de Sevilla

Hot-Pressing of (Ti, Mt)(C, N)-Co-Mo2C (Mt=Ta, Nb) powdered cermets synthesized by a mechanically induced self-sustaining reaction

 

Advanced Search
 
Opened Access Hot-Pressing of (Ti, Mt)(C, N)-Co-Mo2C (Mt=Ta, Nb) powdered cermets synthesized by a mechanically induced self-sustaining reaction
Cites

Show item statistics
Icon
Export to
Author: Chicardi Augusto, Ernesto
Gotor Martínez, Francisco José
Córdoba Gallego, José Manuel
Medri,V.
Guicciardi,S.
Lascano,S.
Department: Universidad de Sevilla. Departamento de Ingeniería y Ciencias de los Materiales y del Transporte
Date: 2016
Published in: Chemical Engineering Journal, 292, 51-61.
Document type: Article
Abstract: A mechanically induced self-sustaining reaction (MSR) has been successfully employed for manufacturing powdered cermets based on Ti, Ti–Ta and Ti–Nb carbonitrides using Co as the binder phase and Mo2C as the sintering additive. The powders were sintered by hot-pressing, and complete chemical, microstructural and mechanical characterizations were performed on the densified cermets. When elemental Ta, Nb and/or Mo2C were added to the initial raw mixture submitted to the MSR process, smaller ceramic grains were observed after sintering, which suggested that ceramic particle growth was hindered by the presence of Ta, Nb and/or Mo in the host titanium carbonitride structure. Nanoindentation measurements enabled the determination of the hardness of the ceramic and binder phases, and values in the range of 26–29 GPa and 14–16 GPa were found, respectively. The high hardness values of the binder were related to the formation of intermetallic phases.
Cite: Chicardi Augusto, E., Gotor Martínez, F.J., Córdoba Gallego, J.M., Medri, , Guicciardi, y Lascano, (2016). Hot-Pressing of (Ti, Mt)(C, N)-Co-Mo2C (Mt=Ta, Nb) powdered cermets synthesized by a mechanically induced self-sustaining reaction. Chemical Engineering Journal, 292, 51-61.
Size: 3.333Mb
Format: PDF

URI: https://hdl.handle.net/11441/72158

DOI: 10.1016/j.cej.2016.02.007

See editor´s version

This work is under a Creative Commons License: 
Attribution-NonCommercial-NoDerivatives 4.0 Internacional

This item appears in the following Collection(s)