Study on Etching Capability of Ferric Chloride Etchant

The etching ability of ferric chloride etching solution for iron nickel alloy was studied.The experiment results show that the best etching temperature of ferric chloride etching solution is 40 ℃.At 40 ℃,maximum etching speed of 20mL etching solution is 0.021 mg?min-1?mm-2;while achieving effective etching volume 46.39 g/L,the etching speed is 0.0094 mg?min-1?mm-2;while achieving the maximum etching volume 58.79 g/L,the etching speed is 0.00246 mg?min-1?mm-2.