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Absence of the core–rim microstructure in TixTa1 − xCyN1 − y-based cermets developed from a pre-sintered carbonitride master alloy

Opened Access Absence of the core–rim microstructure in TixTa1 − xCyN1 − y-based cermets developed from a pre-sintered carbonitride master alloy

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Autor: Chicardi Augusto, Ernesto
Córdoba Gallego, José Manuel
Sayagués de Vega, María Jesús
Gotor Martínez, Francisco José
Departamento: Universidad de Sevilla. Departamento de Química Inorgánica
Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte
Fecha: 2012
Publicado en: International Journal of Refractory Metals and Hard Materials, 33, 38-43.
Tipo de documento: Artículo
Resumen: (Ti,Ta)(C,N) solid solution-based cermets with cobalt as the binder phase were synthesised by a two-step milling process. The titanium–tantalum carbonitride solid solution (the ceramic phase) was obtained via a mechanically induced self-sustaining reaction (MSR) process from stoichiometric elemental Ti, Ta, and graphite powder blends in a nitrogen atmosphere. Elemental Co (the binder phase) was added to the ceramic phase, and the mixture was homogenised by mechanical milling (MM). The powdered cermet was then sintered in a tubular furnace at temperatures ranging from 1400 °C to 1600 °C in an inert atmosphere. The chemical composition and microstructure of the sintered cermets were characterised as ceramic particles grown via a coalescence process and embedded in a complex (Ti,Ta)–Co intermetallic matrix. The absence of the typical core–rim microstructure was confirmed.
Cita: Chicardi Augusto, E., Córdoba Gallego, J.M., Sayagués de Vega, M.J. y Gotor Martínez, F.J. (2012). Absence of the core–rim microstructure in TixTa1 − xCyN1 − y-based cermets developed from a pre-sintered carbonitride master alloy. International Journal of Refractory Metals and Hard Materials, 33, 38-43.
Tamaño: 497.9Kb
Formato: PDF

URI: https://hdl.handle.net/11441/74345

DOI: 10.1016/j.ijrmhm.2012.02.005

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