Advanced Surface Technologies

Website www.astfinishing.com/
Member since Apr 4, 2023
Chemical Conversion Coating

by Advanced Surface Technologies on Apr 4, 2023

Finance

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A chemical conversion coating is a process where a metal surface is treated with a solution of chemicals to produce a coating that offers corrosion resistance and improves paint adhesion.   Conversion coatings are a broad category that includes passivation, steel phosphating, and chromate coating. Typically, these conversion treatments are applied before electroless plating and painting, and they often increase the lifespan of a metal component.   The Basics   Chemical conversion coating is a process that provides corrosion protection and prepares a metal surface for better adhesion of primers and paints. Unlike passive coatings like paint or powder coat, which do not require any kind of mechanical or electrical action to protect your metal part, conversion coatings use special chemical reactions and/or acidic baths to help form a stable, anti-rust oxide layer on the underlying metal. A common chemistry used for this coating is zinc phosphate (FOSTEX ZN), but there ... Continue reading →

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