HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 50043

Sn plating looks like Zn after Autoclave test

September 20, 2008

We submitted some Microelectronic samples to AutoClave testing (96 Hs.) and when we removed the samples an oxidation formed on the surface of the leads and the body of the parts that looks like Zn plating! Has anyone observed this condition before, and can you tell me what was responsible?

Chris MacMartin
Failure Analysis - Simi Valley, California, USA
^- Privately contact this inquirer -^

September 22, 2008

Let's dip out a 4 liter beaker, dummy out the copper, carbon treat with powdered activated sulfur free carbon, then plate a part in the beaker and see if it corrodes in the autoclave. Let us know.

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

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: