Electropolishing Blog

How Do I Know If My Part Is Passive? | Able Electropolishing

August 11, 2020
How Do I Know If My Part Is Passive?

Passivation is an acid-cleaning process designed to remove free iron from the surface of stainless steels. This process is an essential step in removing foreign matter from the surface of the metal and creating a chromium-rich layer that is resistant to corrosion. The process effectively prolongs the part’s lifespan. Passivation can be the differentiating factor between acceptable performance and untimely part breakdown.


How Does Passivation Work? | Able Electropolishing

September 24, 2014
How Does Passivation Work?

Passivation is a metal finishing treatment that companies utilize to protect and enhance parts against corrosion.. To begin passivation, metal parts are placed into a basket and then submerged into a bath of nitric or citric acid. The concentration of the acid removes free iron and other foreign material deposited during part machining. Passivation is simply utilized to remove surface impurities and provide some corrosion resistance. While passivated parts do have a light level of cleansing, they often require additional processes, such as electropolishing, for more intense removal of surface contaminants.


Does Chemical Passivation Increase Corrosion Resistance? | Able

July 17, 2013
Does Chemical Passivation Increase Corrosion Resistance?

Chemical passivation is frequently used to increase the corrosion resistance of stainless steel by eliminating free iron and other surface contaminants. Despite the process's history and widespread use as a method for improving part longevity in corrosive environments, its ineffectiveness is causing engineers to look for other methods to protect their parts from corrosion.

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