Monitoring Passivation on Stainless Steel with Open Circuit Potential Technology

Nathalie Vézina
Walter Surface Technologies

Presented At: 
CWA Conference 2012

Passivation of stainless steel parts is of crucial importance in order to maintain its corrosion protection properties. Most specifically, heat affected zones on welded stainless steel are vulnerable areas that require specific care and should be thoroughly tested for passivation in order to avoid corrosion issues. The optimization of the passivation on stainless steel parts depends largely on our knowledge of the passivation process itself and the methods used to test the manufactured parts. A suitable test method is instrumental in validating proper passivation of parts for various industries such as food & beverage, pharmaceutical and other industries using stainless steel components for their specific needs. Several existing methods are currently available and are well known to most manufacturers, but do they really meet their specific needs?

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