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Degreasing is the initial and fundamental phase in the processing of the artifacts. To obtain a good final result it is essential before the pickling and passivation process.
With pickling the surface state of metal oxides is eliminated, there are different processes depending on the material.
Pickling of brass and copper
Pickling of steel
Pickling of Aluminium
Passivation, or decontamination as it is also called, aims to reform the oxide film on the steel pieces.
Passivation of aluminium
Passivation of brass and copper
Passivation of steel
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January 30, 2016
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