Ingemar, and others:
While we're on the subject:
We also use 'stoneage' technique to inspect nickle/gold
plating from sub-contractor. He's using some sort of 
non-destructive method to verify thickness, and we do not
always agree on the result. 
Apart from the obvious problem of thichness variation over
the panel, is there a predictable difference in thickness 
found using different techniques?

Regards

Torben Østeraa
Printca AS
Denmark


>>-----Original Message-----
>>From: Ingemar Hernefjord (EMW)
>>[mailto:[log in to unmask]]
>>Sent: Tuesday, October 05, 1999 8:42 AM
>>To: [log in to unmask]
>>Subject: Re: [TN] Measurements of Gold over Nickel
>>
>>
>>Edward,
>>we have found that there is nothing better than ordinary 
>>stoneaged crossectioning and study in a metalographic 
>>microscope. In mass production, samples are usually enough. 
>>Such examinations don't take time and they tell a lot more 
>>than betascope. And...you can store the images and have a 
>>look back up and then.
>>Regards
>>Ingemar Hernefjord
>>Ericsson Microwave Systems
>>
>>
>>I am looking after alternative method of measuring of 
>>electroplated Gold
>>over Nickel for production .Gold thickness is in range from 
>>0.75 to 2.5
>>microns.
>>I have in my plant beta scope with Promethium source with lot 
>>of problems.I
>>have also XRF,that can not be placed in production area.
>>Any sugestions?
>>
>>Edward Szpruch
>>Eltek , Manager of Process Engineering
>>P.O.Box 159 ; 49101 Petah Tikva Israel
>>Tel  ++972 3 9395050 , Fax  ++972 3 9309581
>>e-mail   [log in to unmask]
>>
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