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Development of multicomponent-multiphase materials based on (Ti, Ta, Nb)CxN1-x carbonitride solid solutions

Opened Access Development of multicomponent-multiphase materials based on (Ti, Ta, Nb)CxN1-x carbonitride solid solutions

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Autor: Córdoba Gallego, José Manuel
Chicardi Augusto, Ernesto
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: Chemical Engineering Journal, 192, 58-66.
Tipo de documento: Artículo
Resumen: A set of powdered cermets based on (Ti,Ta,Nb)C xN 1-x carbonitride solid solutions were synthesized from mixtures of elemental powders by a mechanically induced self-sustaining reaction (MSR) method and subsequently sintered using a pressureless method. Differing nominal compositions of the hard phase were used, and the nature of the metallic-binder phase (Co, Ni, or Co-Ni) was varied. For comparative purposes, the design of the material was performed using two different synthesis pathways. The composition and microstructure of the ceramic and binder phases before and after sintering were analyzed and related to the microhardness of the material, which was found to increase with increasing contiguity of the hard phase and with decreasing particle size.The samples synthesized in one step (SERIES 2) showed higher microhardness and a more homogeneous microstructure with smaller particle size of the hard phase due to the presence of Ti, Ta, and Nb in the molten binder that hindered cerami...
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Cita: Córdoba Gallego, J.M., Chicardi Augusto, E. y Gotor Martínez, F.J. (2012). Development of multicomponent-multiphase materials based on (Ti, Ta, Nb)CxN1-x carbonitride solid solutions. Chemical Engineering Journal, 192, 58-66.
Tamaño: 1.453Mb
Formato: PDF

URI: https://hdl.handle.net/11441/73024

DOI: 10.1016/j.cej.2012.03.046

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