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Revista de Metalurgia
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Revista de Metalurgia
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Revista de Metalurgia
Article . 2010
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Docta Complutense
Article . 2010
License: CC BY NC ND
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Comportamiento a la corrosión electroquímica de aleaciones MgAl con recubrimientos de materiales compuestos Al/SiCp mediante proyección térmica

Electrochemical corrosion behaviour of Mg-Al alloys with thermal sprayAl/SiCp composite coatings
Authors: Pardo Gutiérrez Del Cid, Ángel; Feliu Jr., S; Merino Casals, María Concepción; Mohedano Sánchez, Marta; Casajús, P.; Arrabal Durán, Raúl;

Comportamiento a la corrosión electroquímica de aleaciones MgAl con recubrimientos de materiales compuestos Al/SiCp mediante proyección térmica

Abstract

Se estudia, mediante espectroscopía de impedancia electroquímica en solución 3,5 % NaCl, la protección frente a la corrosión de aleaciones Mg-Al recubiertas por proyección térmica con materiales compuestos Al/SiCp. Se varió la fracción de volumen de las partículas de SiC (SiCp) entre 5 y 30 %. Los recubrimientos efectuados por proyección térmica revelan un elevado número de microcanales, en la vecindad de las partículas de SiC, que facilitan la penetración del electrolito originando procesos de corrosión galvánica en los substratos de las aleaciones de magnesio. Un tratamiento posterior mediante la aplicación de una presión en frío reduce el grado de porosidad de los recubrimientos y mejora la unión, tanto entre el substrato y el recubrimiento como entre las partículas de aluminio y SiC, mejorando la resistencia a la corrosión de las aleaciones recubiertas. La efectividad de los recubrimientos disminuye ligeramente con la adición de SiCp cuando se comparan con los mismos recubrimientos de aluminio sin refuerzo.

Country
Spain
Keywords

66.0, Mining engineering. Metallurgy, Materiales, Recubrimientos der materiales compuestos, corrosión, TN1-997, aleaciones de magnesio, Composite coatings, Proyección térmica, 3312 Tecnología de Materiales, 620.1, Corrosion, Recubrimientos de materiales compuestos, Aleaciones de magnesio, 3303 Ingeniería y Tecnología Químicas, Magnesium alloys, Corrosión, proyección térmica, Thermal spraying, recubrimientos de materiales compuestos

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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