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High temperature oxidation resistance of (Ti,Ta)(C,N)-based cermets

Opened Access High temperature oxidation resistance of (Ti,Ta)(C,N)-based cermets

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Autor: Chicardi Augusto, Ernesto
Gotor Martínez, Francisco José
Córdoba Gallego, José Manuel
Departamento: Universidad de Sevilla. Departamento de Ingeniería y Ciencias de los Materiales y del transporte
Fecha: 2016
Publicado en: Corrosion Science, 102, 126-136.
Tipo de documento: Artículo
Resumen: Cermets based on titanium–tantalum carbonitride were oxidized in static air between 800 °C and 1100 °C for 48 h. The thermogravimetric and microstructural study showed an outstanding reduction in the oxidation of more than 90% when the Ta content was increased. In cermets with low Ta content, the formation of a thin CoO/Co3O4 outer layer tends to disappear by reacting with the underlying rutile phase, which emerges at the surface. However, in cermets with higher Ta content, the formation of an external titanate layer, observed even at a low temperature, appears to prevent the oxygen diffusion and the oxidation progression
Cita: Chicardi Augusto, E., Gotor Martínez, F.J. y Córdoba Gallego, J.M. (2016). High temperature oxidation resistance of (Ti,Ta)(C,N)-based cermets. Corrosion Science, 102, 126-136.
Tamaño: 2.701Mb
Formato: PDF

URI: https://hdl.handle.net/11441/72156

DOI: 10.1016/j.corsci.2015.10.001

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