Estudio del comportamiento a la corrosión por picadura de materiales compuestos de matriz de aluminio (A3xx.x/SiCp)

A. Pardo; M. C. Merino; S. Merino; M. D. López; F. Viejo; M. Carboneras; R. Arrabal

doi:10.3989/revmetalm.2004.v40.i5.285

Pitting corrosion behaviour study of aluminium matrix composites (A3xx.x/SiCp)

Authors

A. Pardo Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
M. C. Merino Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
S. Merino Departamento de Tecnología Industrial, Universidad Alfonso X El Sabi
M. D. López Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos
F. Viejo Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
M. Carboneras Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
R. Arrabal Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i5.285

Keywords:

pitting corrosion, composites corrosion, generalised corrosion, composite materials Al/SiCp

Abstract

The influence of the SiCp proportion on the pitting corrosion of A3xx.x/SiC/xxp composites was studied by means of potenciodinamic polarization and double cyclic polarization in saline environment at 25 °C. A360/SiC/xxp matrix does not contain copper, whereas the A380/SiC/xxp matrix contains l,39'l,44w %Ni and 3,13-3,45wt %Cu. The kinetic study was carried out by gravimetric measurements. The nature of corrosion products was analysed by low angle XRD and Scanning Electron Microscopy (SEM). The corrosion is due to nucleation and growth of Al₂O₃·3H₂O on the material surface. The corrosion increases with the reinforcement proportion, chloride concentration and copper content.

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Published

2004-10-30

How to Cite

Pardo, A., Merino, M. C., Merino, S., López, M. D., Viejo, F., Carboneras, M., & Arrabal, R. (2004). Pitting corrosion behaviour study of aluminium matrix composites (A3xx.x/SiCp). Revista De Metalurgia, 40(5), 341–346. https://doi.org/10.3989/revmetalm.2004.v40.i5.285

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Issue

Vol. 40 No. 5 (2004)

Section

Articles

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