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  1. kamran1

    Improvement of wettability of SiC particles with Al

    I am trying to produce Al-SiC particulate MMC in the molten state by stirring. I have tried to mix the SiC particles with oxidized and non-oxidized surface, but just after stirring, all the particles seperated out from the melt at the surface. Can any body suggusted any solution of this problem?
  2. kamran1

    Anodizing of A357 sample for metallograpy

    Hi all, I tired to anodize an A357 sample for metallographic observation usng perpendicular polarized light. I used Barkers solution (195 ml H2O + 5 ml HBF4) at room tempearture with 20V supply using Al cathode for 80 sec. But I was not able to get any contrast between the grains. I also tried...

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