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Dear All, I am suffering the adhesion issue of Parylene AF4 coated on solder mask of Printed circuit board. The peeling test is failed by 3M Scotch 600. The surface is clean for sure. We have...
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Conventionally,for parylene coating ,there are several ways: optical measurement, SEM,Alpha Step. All are offline,indirect. Is it possible to read directly on coated product ? just like...
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