Knowledge Base

Porosity

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Porosity (Holiday) Detection - Overview

Corrosion is an extremely costly and disruptive worldwide problem. The oxidation of metal (and concrete) surfaces, exposed by the breakdown or inadequacy of the applied protective coatings call for early detection to correct serious extension. Surfaces requiring testing are generally expected to...

Porosity - Holiday testing is much easier than it used to be thanks to PCWI

Testing coatings was much more difficult before PCWI made everything you need readily available. When we did this job in 1978 we had to manufacture our own brushware and use the bulky Pulse DC porosity detectors which didn't produce a stable voltage output. We changed over to the DC detectors wh...

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