When stainless steel is used in a cell, any work that has been performed using any machinery or handling that contains steel or iron will contaminate the surface of the stainless. Passivation removes any traces of iron on the surface that could start rust and become like a cancer to the stainless. Nitric acid was once widely used for passiavtion, but it is a dangerous and has end products that are difficult to get rid of. Citric acid which is safer is now the favoured method.
When stainless steel is used in a cell, any work that has been performed using any machinery or handling that contains steel or iron will contaminate the surface of the stainless. Passivation removes any traces of iron on the surface that could start rust and become like a cancer to the stainless. Nitric acid was once widely used for passiavtion, but it is a dangerous and has end products that are difficult to get rid of. Citric acid which is safer is now the favoured method.
regpye 2 years ago
what does this do
NOBOX7 2 years ago