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Removal of residual colloidal silica from metallography sample

  1. Aug 9, 2009 #1
    Hey there,
    I've been having some issues with residual colloidal silica on a metallography sample (mounted in Bakelite). I used a Vibromet for several hours as my final stage of polishing which gave me a really nice polish, but now I'm having trouble with EDS and high-res SEM as I'm trying to image primary/eutectic silicon phase and I have some residual colloidal messing things up.

    I have tried just using a fresh polishing cloth and water, but that hasn't fully cleaned it up. Just wondering if anyone has any neat tricks to clean up a sample?

    Thanks,
     
  2. jcsd
  3. Aug 18, 2009 #2

    chemisttree

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    Ion mill followed by EDS.
     
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