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Cobalt and alloys - Pure Co, Co base superalloys

Material Name: Cobalt and alloys
Recipe No.: 140
Primary Chemical Element in Material: Co
Sample Type: Bulk
Uses: General microstructure
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Electrolytic
Etchant (Electrolyte) Composition: 100 ml distilled water, 5-10 ml hydrochloric acid.
Procedure (Condition): 2-10 s, 3 V dc, graphite cathode.
Note: Pure Co, Co base superalloys.
Reference: Fred Hargreaves (Ret.), Personal Etchants Database 1960-1990, Analytical Services Bookham Technology, Caswell, Towcester, Northamptonshire NN8EQ, UK.