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Keywords: Potentiostat , Non -Chill , Chill end, Unidirectional solidification, Zircon particles.
Abstract:
<p class="MsoNormal" style="text-align:justify">In
this research article, preheated (200°C) Zircon is added to Aluminum alloy (LM13) in terms of
3wt. % and Carbon (3wt. %) is maintained constantly. Specimens are prepared
using the stir casting process and to place the copper chills at one end of the
mold to obtain unidirectional solidification. So Lm13 with 0Wt.%,3Wt.%, 6Wt.%,
9Wt.%, and 12wt.% of Zircon / 3Wt.% of Carbon specimens are obtained at both
copper chill end and non-chill end of the mold. Specimens are tested for
tensile and hardness, results show that properties of the composite specimens
increase for the addition of reinforcements till 9Wt. % and then it decreases.
Minimal and better properties are found for Zircon content (0Wt. %, 9Wt. %).
Hence Specimens of Zircon content (0Wt. %, 9Wt. %) for chill and non-chill end
are evaluated for corrosion test using potentiostat apparatus. Corrosion
analysis reveals that 9Wt. % copper chilled specimens provide better Corrosion
resistance. Finally, corroded specimens are observed under an optical
microscope to evaluate the surface morphology of the exposed surface of the
specimens. It is observed that 9Wt. % of Zircon shows minimum pitting than
other specimens.</p>
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