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Copper - Al bronzes, Cu-Be alloys

Material Name: Copper
Recipe No.: 186
Primary Chemical Element in Material: Cu
Sample Type: Bulk
Uses: General microstructure
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Electrolytic
Etchant (Electrolyte) Composition: Aqueous solution of chromium (VI) oxide (1%).
Procedure (Condition): 3-6 s, 6 V dc, Al cathode.
Note: Al bronzes, Cu-Be alloys.
Reference: Fred Hargreaves (Ret.), Personal Etchants Database 1960-1990, Analytical Services Bookham Technology, Caswell, Towcester, Northamptonshire NN8EQ, UK.