Nickel superalloys-Macrostructure clearly revealed

Material: Nickel superalloys
Type: Macro
Method: Chemical etching
Etchant (Electrolyte): 200 g ferric chloride, 200 ml hydrochloric acid plus distilled water up to 1000 ml.
Procedure: Etching time up to 1.5 h.
Note: Macrostructure clearly revealed.
Source: Practical Metallography, Vol. 8, No. 1, 1971, p. 3-25.

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