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CRAZING (MACRO CRACKS) IN HARD CHROME PLATING

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mands

mands

Mechanical
Joined
Sep 30, 2002
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Can anyone please give me some information on possible causes for crazing on hard chrome plating (macro cracking).
I believe that high temperatures caused by grinding/polishing and pre-treatment of substrate are favourites.

The substrate is 17-4PH.

Thanks
Mandy
 
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Mandy, if you're still interested in this question,the reason is that as-plated chromium builds up very high residual stress in tension and self cracks when it is thick enough to reach the tensile strength.
 
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