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Subject:	re: gold porosity testing
From:	[log in to unmask]
Date:	Thu, 19 Dec 96 15:54:51 PST
Content-Type:	text/plain
Parts/Attachments:	text/plain (48 lines)

"Todd Rogers" <[log in to unmask]> Wrote:
| 
| We have a potential customer that is concerned about us not 
| doing gold
| porosity testing.
| At this time I have no knowledge of this test.  Could someone 
| please
| forward me some information as to what is the test? What is 
| it testing for?
| and are there any specifications or test methods and the 
| associated numbers
| of those specs.  Any information would be helpful.  Thank You!
| 
| 
| Todd 


Todd,

IPC-TM-650 Test Methods Manual has listed 3 methods for gold porosity 
test: (1) Test method 2.3.24 Porosity of Gold Plating (chemical method). 
This method provides procedures to determine the porosity of gold plating 
both copper and nickel surface by chemical means.  (2) Test method 
2.3.24.1 Porosity Testing of Gold Electrodeposited on a Nickel Plated 
Copper Substrate Electrgraphic Method.  This method provides a procedure 
for testing the porosity of gold electroplated from an alkaline (cyanide), 
acid, or neutral gold plating solution on a nickel substrate in contact 
with gold deposit.  (3) Test method 2.3.24.2  Porosity of Metallic 
Coatings on Copper-Base Alloys, and Nickel (Nitric acid vaper test).
These tests should give you a pretty good idea of what gold porosity test 
is and what material/lab hardware you will need to perform the test and 
more.  Good luck

Nora Xiao
Tektronix, Inc.

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