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SMEAR / PULL OUT |
03-07-2013, 02:51 PM
(This post was last modified: 03-07-2013 02:53 PM by Justin.)
Post: #1
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| SMEAR / PULL OUT
Dear all
Is anyone able to describe how to identify SMEAR / PULL OUT when evaluating a mount? It is nice to explain both via micrographs.  Thanks. Justin | |||
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03-07-2013, 06:46 PM
Post: #2
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| RE: SMEAR / PULL OUT
Hi Justin
It is extremely difficult to identify SMEAR / PULL OUT when evaluating thermal spray coatings. A very useful tool is to impregnate the coatings with epoxy resin prior to mounting. This tends to stop smearing over of the epoxy filled porosity sites and with the more friable coatings adds strength and reduces pull-out. Regards Gordon www.gordonengland.co.uk www.surfaceengineer.co.uk Photography Obsession | |||
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