Tantalum - Attack polishing

Tantalum - Attack polishing

Material Name: Tantalum
Recipe No.: 9752
Primary Chemical Element in Material: Ta
Sample Type: Bulk
Uses: Polishing
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Attack polishing
Etchant (Electrolyte) Composition: Solution 1: 2-5% aq. CrO3, alumina abrasive. Solution 2: 30 ml lactic acid, 10 ml HNO3, 10 ml HF.
Procedure (Condition): Use wax lap instead of cloth with solution 1. Follow with chemical polishing with solution 2.
Note: Vaughan and coworkers
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1984, p. 547.