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Passivation Technology
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What is passivation? Passivation is the chemical treatment process by which the electrochemical condition of passivity is obtained on the surface of metal alloys. Passivity as it relates to austenitic stainless steel is the state in which chemical reactivity is minimized under special environmental conditions, such as the metal exhibits a very low corrosion rate.Pickling (non-selective removal of surface contaminates) and passivation (selective removal of surface iron) using citric acid passivation, nitric acid, phosphoric acid, sulfamic acid and hydrofluoric acid on various stainless steel alloys following the methods and chemistries defined in ASTM A380, ASTM A967, QQP-35-D. It is necessary to passivate stainless steel utilized in corrosive or reactive environments prior to operational use to ensure long term service.In reactive environments such as those present in liquid and gaseous chlorine and oxygen, it s imperative that weld slag and other contaminates formed during cutting and welding are removed prior to operational use. As the leading service provider, companies like Astro Pak not only provides pickling and passivation services but also performs chemical precsion cleaning passivation services to achieve the desired clean and passive services carbon steel systems.Disclaimer: This blog or article is for information purpose only, and should not be treated a professional advise or price protection guarantee. This blog is mainly used for search engine optimization and other commercial purposes and it is advised that readers seek professional consultation in the field of interest for more information.Other News
Published on April 26, 2009 · Filed under: Business; Tagged as: citric acid passivation, passivate, Passivation, precsion cleaning passivation
