Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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3-D Printing: Removal of oxide on alloys
Q. Hi,
I have a titanium alloy (TI-6Al-4v) which was 3D printed from SLM printer, which is heated to 450 °C in vacuum. Now I can't read the surface of the alloy for micro hardness through the tester because of the oxides formed on the alloy. How can I remove the oxides formed on the alloy to have a clear view of the surface?
project - australia
April 18, 2017
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A. When I had a Ti finishing job some years back, I used a 1:1 mix of HNO3 and HF. Scary stuff!  Dave Wichern Consultant - The Bronx, New York ? Are you saying that you can't properly see and measure the diamond indentation because of the oxide? Ken Kirby- Kenosha, Wisconsin, USA |
A. We electropolish 3D printed titanium parts, but only small ones - the surface is very developed and consumes lots of AMPS.
Anna Berkovich
Russamer Lab
Pittsburgh, Pennsylvania
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