[meteorite-list] etching?

From: mark ford <markf_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:50 2004
Message-ID: <6CE3EEEFE92F4B4085B0E086B2941B310143D6_at_s-southern01.s-southern.com>

Bill,

On a similar note, I have often wondered if there is another
electrochemical way of 'etching' perhaps using an electrical voltage and
an electrolyte (the Kamicite/ taenite would have different
electrochemical potentials?) So it should in theory be possible to
affect them differently electrically? You could then control the etch
electronically?


I once accidentally used some Ferric Chloride that had previously been
used to etch copper circuit boards, and it actually Copper coated the
meteorite!! It looked quite strange! The dissolved Copper chloride must
have replaced the surface Fe/Ni ? =20



More Random Thoughts!

Mark Ford
Received on Mon 17 Nov 2003 09:12:12 AM PST