HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 50042

How to do electroless tin plating over electroless nickel

September 19, 2008

I currently do electroless plating nickel on ceramic tubes. I want to electroless plate tin over the nickel. Can anyone tell me how to do this or where to find information.

Brett Michaud
employee - Portland, Oregon
^- Privately contact this inquirer -^

September 22, 2008

Since the part is very hot coming out of the electroless nickel it may be partially passivating, so, lets go back thru a quick nickel chloride strike (Woods) and then the immersion tin.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

Editor's note:
   Mr. Probert is the
   author of

Aluminum How-To / Aluminio El Como

October 4, 2008

Immersion tin as far as I know requires a copper substrate for the reaction to occur. Without copper, no replacement reaction occurs. Also, as opposed to electroless or autocatalytic deposition which continues to plate as long as there is a catalytic surface provided, tin only deposits as long as copper is exposed - once covered, reaction shuts down. Therefore, immersion tin is VERY THIN like 10 millionths of an inch.

Milt Stevenson, Jr.
Anoplate Corp

Syracuse, New York

ANSWER or FOLLOW UP POST an unrelated QUESTION HOT Topics

Disclaimer: It is not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information
presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The
internet is largely anonymous; some names may be fictitious and some recommendations may be deliberately harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: