Repositorio de producción científica de la Universidad de Sevilla

Kinetics of high-temperature oxidation of (Ti,Ta)(CN)-based cermets

Opened Access Kinetics of high-temperature oxidation of (Ti,Ta)(CN)-based cermets

Citas

buscar en

Estadísticas
Icon
Exportar a
Autor: Chicardi Augusto, Ernesto
Córdoba Gallego, José Manuel
Gotor Martínez, Francisco José
Departamento: Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y el Transporte
Fecha: 2016
Publicado en: Corrosion Science, 102, 168-177.
Tipo de documento: Artículo
Resumen: The kinetics of the high-temperature oxidation of titanium–tantalum carbonitride-based cermets with different Ti/Ta ratios was studied. Isothermal oxidation tests were conducted under static air for 48 h at temperatures between 700 °C and 1200 °C. The oxidation satisfied the parabolic kinetics, characteristic of the existence of a protective oxide layer. The apparent activation energy suggests the rate-controlling process during oxidation is the simultaneous inward and outward diffusion of oxygen and titanium, respectively, through the formed protective layer, consisting mainly of a rutile phase. A higher Ta(V) content in the rutile decreased the oxygen diffusivity due to the reduction of oxygen vacancy concentration.
Cita: Chicardi Augusto, E., Córdoba Gallego, J.M. y Gotor Martínez, F.J. (2016). Kinetics of high-temperature oxidation of (Ti,Ta)(CN)-based cermets. Corrosion Science, 102, 168-177.
Tamaño: 2.577Mb
Formato: PDF

URI: https://hdl.handle.net/11441/72160

DOI: 10.1016/j.corsci.2015.10.006

Ver versión del editor

Mostrar el registro completo del ítem


Esta obra está bajo una Licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internacional

Este registro aparece en las siguientes colecciones