Y. L., Saraswathi and S , Das and D.P., Mondal (2005) Erosion-Corrosion Behavior of SiC Particle-Reinforced A1-Si Alloy in NaOH Slurry. Metallurgical and Material Trasactions A, 36A. pp. 2259-2262. ISSN 1073-5623

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Abstract

The erosion-corrsosion behavior of SiC particle-reinforced Al-Si alloy has been studied in NaOH slurry simulating the mining atmosphere. The study was performed at two different sand concentrations, namely, 20 and 30 wt pct, and at a speed of 900 rpm. It is depicted that the wear rates decreased with increasing sand content, indicating that corrosion is the dominating mode of material removal. Further composite exhibited lower wear resistance than the laloys irrespective of the sand concentration. Scanning electron microscope (SEM) observations indicated the dissolution of dendrites of Al due to severe corrosion, leaving behind the network of Si. This ultimately results in the falling of Si particles from the matrix, leaving behind voids. This also results in the formation of voids around the SiC particles and leads to pullout of SiC particles from the matrix during the wear process.

Item Type:	Article
Subjects:	Lightweight Materials > Metal Matrix Composites
Divisions:	UNSPECIFIED
Depositing User:	Mr. B.K. Prasad
Date Deposited:	01 Oct 2013 08:00
Last Modified:	01 Oct 2013 08:00
URI:	http://ampri.csircentral.net/id/eprint/631

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