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 [Adv. ninth edition available used & cheap from this link at Abebooks ] 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

Ed. note: the ninth edition of the ASM Metals Handbook is not available new anymore, but the tenth edition of Volume 5: Surface Engineering is.

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
finishing.com - Brick, NJ

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

 

I want to answer or follow-up on this subject publicly

 

I want to post a new question or inquiry of my own on a different subject

 

This letter is within a monitored forum, very much "alive" here in 2008. If you spot any broken links or obsolete info, please advise!