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February 6 - February 10, 2017

How do you accurately measure the adhesion of inorganic zinc?


Selected Answers

From Per Gabrielsson of Free Lance Consultations and Inspections on February 14, 2017:
Dolly test? You will have a thin layer of dry zinc dust on the surface. Cross cut - yes. Coin scratch does not tell of adhesion, but of hydrolyzing.

From trevor neale of TF Warren Group on February 13, 2017:
Only after ensuring the inorganic zinc has reached full cure should the ASTM 4541 pull test produce repeatable results.

From Paiboonsak Saengsomboon of JT Marketing Co., Ltd. on February 7, 2017:
An easy way to check is by using coin scratch test on the paint film. If you see the shiny surface, then the zinc is well adhered to the steel surface.

From Yan David of DNVGL on February 6, 2017:
Use a dolly test.

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Tagged categories: Adhesion; Quality Control; Quality control; Zinc-rich (inorganic)


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