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Tungsten - Electromechanical polishing

Material Name: Tungsten
Recipe No.: 9704
Primary Chemical Element in Material: W
Sample Type: Bulk
Uses: Polishing
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Electromechanical polishing
Etchant (Electrolyte) Composition: A: Sat. K3Fe(CN)6, alumina. B: 3% H2O2, alumina.
Procedure (Condition): A: Use normal polarity, 2 min, 0.04 A/cm2. B: Use cyclic polarity, 3 min, 0.04 A/cm2.
Note: Dickinson
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1984, p. 542.