Optimization of the Corrosion Behavior of AA7075 Al/SiC P and Al/Al 2 O 3 Composites Fabricated by Powder Metallurgy

Abstract

In this investigation an attempt has been made to fabricate Al-SiC_p and Al-Al₂O₃ composite materials by powder metallurgy technique at different volume percentage of reinforcement (5, 10, 15, 20, and 25%). The corrosion behavior of the composites were analyzed using AC Gill potentiostat with 3.5 wt% NaCl medium. Four factor, five level, central composite, rotatable design matrix is used to optimize the required number of experiments. The mathematical models were developed by the response surface method (RSM). The developed models have been checked for their adequacy and significance by the F-test and t-test, respectively. The results obtained from the mathematical models have been optimized and also tested using conformity test runs.

Keywords

composites corrosion powder metallurgy optimization.

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