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June 2008

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Subject:
From:
Guenter Grossmann <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Guenter Grossmann <[log in to unmask]>
Date:
Mon, 30 Jun 2008 09:57:42 +0200
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David

The only  way to remove gold chemically is using nitrohydrochloric acid or aqua regia which consists of three parts concentrated hydrochloric acid an one part nitric acid.
However, I don't know how the ceramic body of your components will like this treatment.

Best regards

Guenter




_____________________________________________________

EMPA
Swiss Federal Laboratories  for Materials Testing and Research
Centre for Reliability
Guenter Grossmann,  Senior Engineer

8600 Duebendorf
Switzerland

Phone: xx41 44 823 4279
Fax :     xx41 44 823 4054
mail:     [log in to unmask]
_____________________________________________________

>>> David Tremmel <[log in to unmask]> 06/27/08 9:42 pm >>>
Hello,

 

We have some ceramic LGAs which need the gold pads to be cleaned, probably
using an acid.

 

If anyone has performed this kind of work before and could recommend which
acid and some procedural help I would greatly appreciate it.

 

Thank you in advance for any suggestions and have a nice weekend.

 

 

Thank you,

 

David Tremmel

Value Recovery

847 858-5540 - Cell

847 557-9574 - Office

847 557-9573 - Fax

 <http://valurecovery.com/> http://ValuRecovery.com 

 


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