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Browse Prior Art Database

Bond Breaker Technique

IP.com Disclosure Number: IPCOM000043280D
Original Publication Date: 1984-Aug-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Ameen, JG: AUTHOR [+4]

Abstract

Substituting the use of a commercially available coating remover for the ultrasonic agitation method of removing silicone based thermal grease will reduce fatigue cracking of soldered connections, thereby increasing their reliability. The method to be used is as follows: Tank 1) Immerse parts to be stripped of thermal grease in a 50:50 by volume solution of a first solution comprising methylene chloride and a second solution comprising 80% methylene chloride, 10% isopropyl alcohol, and less than 8% mineral spirits. Immerse the parts to be stripped for two minutes (with mechanical or magnetic agitation). Tank 2) Rinse parts in a cascading deionized water bath for one minute.

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Bond Breaker Technique

Substituting the use of a commercially available coating remover for the ultrasonic agitation method of removing silicone based thermal grease will reduce fatigue cracking of soldered connections, thereby increasing their reliability. The method to be used is as follows: Tank 1) Immerse parts to be stripped of thermal grease in a 50:50 by

volume solution of a first solution

comprising methylene chloride and a second

solution comprising 80% methylene chloride,

10% isopropyl alcohol, and less than 8%

mineral spirits. Immerse the parts to be

stripped for two minutes (with mechanical or

magnetic agitation). Tank 2) Rinse parts in a cascading deionized water bath for one minute. Tank 3) Immerse parts in a 10% by volume solution of acetic acid for two minutes

(this removes residual zinc oxide). Tank 4) Rinse parts in a cascading deionized water bath for one minute

(this removes residual acetic acid).

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