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W and W alloys - Electrolytic polishing

Material Name: W and W alloys
Recipe No.: 10031
Primary Chemical Element in Material: W
Sample Type: Bulk
Uses: Polishing
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Electrolytic polishing
Etchant (Electrolyte) Composition: 100 g NaOH, 1000 ml distilled water.
Procedure (Condition): Current density: 3-6 A/dm2, voltage dc: 6 V, temperature: 20 C, time: 20-30 min.
Note: Agitate solution. Use stainless steel cathode. Hughes and Coomes.
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1984, p. 599.