Letter | Published:

Electrolytic Method for obtaining Bright Copper Surfaces


IT is possible to polish a copper surface electro-lytically by making it the anode in an aqueous solution of orthophosphoric acid at high current density (minunum 25 amp./dm.2). This mode of polishing is particularly suitable for metallographic examinations, and has been used for the examination of copper deposits in presence of various colloids.

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