Letter 3072

Anodizing of Tungsten

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I just came across your web site. You appear to be very knowledgeable in this area and I need a quick answer (although getting the work done would take longer). The ASM Metals Handbook 9th Ed. Vol.5 refers to an acetic acid / sodium borate solution (used for vanadium but no 'recipe' was included). Can you recommend an anodizing solution, electrode materials and electrical parameters or point me in the right direction? I eventually want to anodize tungsten powder but I will do trial runs on foil. Thanks.

Mike Featherby

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I hope that the "You" in "You appear to be very knowledgeable in this area" refers to the collective knowledge of ALL of our readers--because I have no ideas whatsoever on this one folks.


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey

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The formula on page 661 of that book seems very specific to me. If the water is maintained between 1 and 2 M, then the acetic acid must be glacial.

Tom Pullizzi
platronica.com
Falls Township, PA 

 

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