Corrosion behaviour of Mg-Zn-Y-Mischmetal alloys in phosphate buffer saline solution

The influence of the processing route and chemical composition in the corrosion behaviour of two Mg-Zn-Y-Mischmetal alloys has been evaluated in phosphate buffer saline solution. The corrosion resistance of the alloy processed by conventional techniques was substantially higher than that found for t...

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Detalles Bibliográficos
Autores: Pérez, P, Onofre, E., Cabeza, S., Llorente, I, del Valle, J.A., García-Alonso, M.C., Adeva, P, Escudero, M.L
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:México
Institución:Instituto Politécnico Nacional
Repositorio:Repositorio Digital del IPN
OAI Identifier:oai:www.repositoriodigital.ipn.mx:123456789/15556
Acceso en línea:http://www.repositoriodigital.ipn.mx/handle/123456789/15556
Access Level:acceso abierto
Palabra clave:Corrosion behaviour of Mg-Zn-Y-Mischmetal alloys in phosphate buffer saline solution
Descripción
Sumario:The influence of the processing route and chemical composition in the corrosion behaviour of two Mg-Zn-Y-Mischmetal alloys has been evaluated in phosphate buffer saline solution. The corrosion resistance of the alloy processed by conventional techniques was substantially higher than that found for the same alloy processed from atomised powders. Fine homogeneous distribution of the second-phase particles promoted severe attack due to the enhanced number of galvanic microcells. A higher concentration of zinc and a lower content of rare earth additions improved the corrosion resistance of the alloys due to the lower volume fraction of second-phase particles. © 2012 Elsevier Ltd.