I would refer you to the excellent book, "The Contamination of Printed  
Wiring Boards and Assemblies", by Carl J. Tautcher, published by Omega  Scientific 
Services in 1976. 
Carl did much work with the military & aerospace world to deal with the  
phenomenon of 'vesication' as it was known at the time. I would suggest you take  
a look at Chapter 6 especially, although the topic is described in many of the 
 other chapters of this book.  

Bill  Kenyon
Global Centre Consulting
3336 Birmingham Drive
Fort Collins, CO  80526
Tel: 970.207.9586 Cell: 970.980.6373
email:  [log in to unmask]




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