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Pure Pt and Pt with alloy content Rh, Ru, Ir, and Os - Chemical etching

Material Name: Pure Pt and Pt with alloy content Rh, Ru, Ir, and Os
Recipe No.: 9220
Primary Chemical Element in Material: Pt
Sample Type: Bulk
Uses: General microstructure
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Chemical
Etchant (Electrolyte) Composition: 50 ml distilled water, 100 ml hydrochloric acid 32%, 10 ml nitric acid 65%.
Procedure (Condition): 1-5 min, use hot.
Note: Pure Pt and Pt with alloy content Rh, Ru, Ir, and Os.
Reference: G. Petzow, Metallographic Etching, 2nd Edition, ASM International, USA, 1999.