Cu and Cu alloys - Electrolytic polishing

Cu and Cu alloys - Electrolytic polishing

Material Name: Cu and Cu alloys
Recipe No.: 9915
Primary Chemical Element in Material: Cu
Sample Type: Bulk
Uses: Polishing
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Electrolytic polishing
Etchant (Electrolyte) Composition: 150 ml H3PO4, 75 ml propionic acid, 30 ml H2SO4, 30 ml distilled water.
Procedure (Condition): Voltage dc: 5-10 V, temperature: 20-25 C, time: 5 min.
Note: Use Copper cathode. Anode gently agitated. Good for tin bronzes and beryllium bronzes.
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1984, p. 571.