Cobalt and cobalt alloys-Chemical etching

Material: Cobalt and cobalt alloys
Type: Macro
Method: Chemical etching
Etchant (Electrolyte): Saturated solution of FeCl3 in HCl,to which add 5% by volume HNO3 prior to use.
Procedure: Use at 21 C (70 F). Follow etch by dip in HCl and water (1:1). Water rinse and dry.
Note: No data.
Source: Practical Metallography, Vol. 10, No. 7, 1973, p. 398-413.

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