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Letter 2028a
How to electropolish Nitinol for
microstructure studies
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I am interested about the electropolishing, chemical polishing of
nitinol for Microstructure studies using optical microscope and
scanning electron microscope.
Ganesh Kumara K.
Mangalore University - Mangalore , Karnataka
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hi ganesh
i have been trying my own luck at EP nitinol for optical and
electron microscope studies. The idea here is to get a good surface
finish which can be done with a fine diamond polish.
for EP a good solution to use would be 20% H2SO4 in methanol. You
can connect it as the anode to have faster removal of the oxide and
then later try to polish it at the cathode with hydrogen evolution.
But you need to do a couple of trials to get your own recipe as it
depends on the distance of the electrodes, surface area, current
density etc.. I would suggest using low to medium voltages (around 10
V) to get a steady uniform removal. In the meantime if u have had any
luck with this please do let me know as i will be interested with
your progress. I have a few relevant pubs. if u are interested.
-- Guru
Guruprasad Ramanathan
Case Western Reserve Univ. - Cleveland, OH
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