Fisicoquímica de las reacciones de cloración de metales y aleaciones.

De Micco, Georgina (2007) Fisicoquímica de las reacciones de cloración de metales y aleaciones. Tesis Doctoral en Ciencias de la Ingeniería, Universidad Nacional de Cuyo, Instituto Balseiro.

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Resumen en español

En esta tesis se avanzó en el conocimiento fisicoquímico de sistemas complejos. Las reacciones de cloración son reacciones heterogéneas sólido-gas no catalíticas, que no sólo presentan las dificultades propias del estudio de la reacción produciéndose en una interfase, sino que se suman las características particulares de los cloruros y sus interacciones. Los interrogantes que surgen de este tipo de estudio no pueden resolverse aplicando una sola técnica de análisis; por ello también resulta desde el punto de vista experimental una tarea complicada y deben conocerse varias técnicas instrumentales tanto para obtener los resultados como para la interpretación de los mismos. Se eligió estudiar la cloración de las aleaciones ternarias y binarias que contengan Al, Cu y Zn y los metales puros, ya que estos elementos se encuentran en las vainas de los combustibles nucleares gastados. El objetivo de la investigación es lograr un proceso que elimine la mayor parte del Al el cual es el componente mayoritario. De esta manera se reduce la cantidad de residuos para acondicionar a través de la vitrificación. Los resultados obtenidos permiten no sólo lograr los objetivos propuestos para cada sistema, sino que además pueden ser aplicados a otros sistemas similares para el reciclado de metales.

Resumen en inglés

This thesis has contributed towards the knowledge of complex systems. The chlorination reactions are non-catalytic solid-gas heterogeneous reactions which, in addition to the difficulties associated with the reactions occurring in an interface, have the particular features of chlorides compounds and their interactions. The questions arising from this type of study can not be solved by the application of an individual analysis technique. From the experimental point of view it is complicated, and many instrumental techniques need to be applied in order to obtain significant results as well as meaningful interpretations. The system under study is the chlorination of ternary and binary alloys containing Al, Cu and Zn and the pure metals, as these elements belong to the spent nuclear fuel cladding. The aim of the research has been to develop a process that eliminates most of the aluminium, which is the more abundant specie. In this way, the amount of material to be conditioned (vitrified) is reduced. The objectives proposed for each system have been achieved, and the results obtained can also be applied to similar systems for metal recycling.

Tipo de objeto:Tesis (Tesis Doctoral en Ciencias de la Ingeniería)
Palabras Clave:Chlorination; Cloruración; Alloys; Aleaciones; Chlorides; Cloruros; Metals; Metales; Ternary alloy systems; Sistemas de aleaciones ternarias ; Binary alloy systems; Sistemas de aleación binarios.
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Materias:Química > Química analítica
Física > Física de materiales
Metalurgia > Aleaciones
Divisiones:Presidencia > Gcia. Complejo Tecnológico Pilcaniyeu
Código ID:304
Depositado Por:Marisa G. Velazco Aldao
Depositado En:01 Feb 2012 10:38
Última Modificación:19 Dic 2012 10:08

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