Effect of Ni coating on SiC particles to synthesize Al based Metal Matrix Composites

Vanarotti, M and Venkateswarlu, K and Kori, SA and Sridhar, BR and Padasalgi, SB (2013) Effect of Ni coating on SiC particles to synthesize Al based Metal Matrix Composites. International Journal of Science Research, 01 (4). pp. 405-409. ISSN 2319-7064

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Aluminum Metal Matrix Composites (MMC) have been essentially studied due to their superior physical, mechanical and Tribological wear properties. Al MMC’s are finding applications in aerospace, automobile and general engineering industries owing to their favorable microstructure and improved mechanical behavior. In the present investigation Al based MMC with SiC were synthesized by liquid metallurgy technique. This paper is aimed to study the influence of Ni coating on SiC particles to fabricate Al MMC in addition to tribological and wear properties. The result shows that SiC content can be added to Al matrix up to a volume fraction of 15%. The hardness measurements suggest that an increase in SiC content was responsible for improved hardness value. Al with 15% of SiC resulted a hardness value of 115 HV.The microstructure examinations clearly demonstrated that SiC particles were uniformly distributed in Al matrix. The interface between matrix and reinforcement has been substantially improved while coating SiC particles with Ni. The EDX results also confirmed the presence of Ni on SiC particles. Tribological wear properties of Al-SiC composite suggest that presence of SiC has strong influence on improving the sliding wear resistance under various test conditions. The improved bonding between SiC and Al matrix by Ni coating resulted in further improvement in sliding wear performance. The influence of applied load, sliding distance and pressure during sliding was discussed in detail.

Item Type: Article
Additional Information: Copyright to this article belongs to M/s. IJSR
Uncontrolled Keywords: Metal matrix composites;Sliding wear;Silicon carbide;Interface
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms. Alphones Mary
Date Deposited: 04 Jul 2014 04:46
Last Modified: 04 Jul 2014 04:46
URI: http://nal-ir.nal.res.in/id/eprint/11992

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