Please use this identifier to cite or link to this item: http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/2565
Title: Effect of SiCp multimodal distribution on pitting behavior of Al/SiCp composites prepared by reactive infiltration
Authors: Montoya Davila, Miguel
Pech Canul, Martin I.
Pech Canul, Maximo A.
Issue Date: Sep-2009
Publisher: Elsevier
Abstract: The effect of coated-SiCp multimodal-size-distribution on the pitting behavior of Al/SiCp composites was inves- tigated. α-SiC powders (10, 54, 86, and 146 μm) were properly mixed and coated with silica to produce porous preforms with 0.6 volume fraction of the reinforcement with monomodal, bimodal, trimodal, and cuatrimodal size distribution. The preforms were infiltrated with the alloy Al–13 Mg–1.8Si (wt.%) in argon followed by nitrogen at 1100 oC for 60 min. The composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) before and after cyclic polarization measurements in 0.1 M NaCl de-aerated solu- tions. Results show that whereas corrosion and passivation potentials are not influenced with increase in SiCp particle size distribution, favorably, the susceptibility to pitting corrosion decreases. This beneficial effect is ascribed to the smaller area of the alloy matrix exposed to the chloride solution with augment in particle size distribution, substantially when going from monomodal to bimodal SiCp particle size distribution.
URI: http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/2565
ISSN: 0032-5910
Other Identifiers: info:eu-repo/semantics/publishedVersion
Appears in Collections:*Documentos Académicos*-- M. en C. e Ing. de los Materiales

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