PRE-TREATMENT OF BERYLLIUM COPPER ALLOY

摘要

PURPOSE:To set free the excess and deficiency of etching and to improve the reliability of plating to be subjected thereon by removing an electrolytic smut generated on the surface of a Be-Cu alloy by a chemical method in the etching of electrolytic pickling in which the Be-Cu alloy is set to an anode. CONSTITUTION:The etching of the electrolytic pickling is executed by setting the Be-Cu alloy as the anode in an aq. acid soln; at that time the electrolytic smut generated on the surface of the Be-Cu alloy is immersed in the aq. acid soln. and subjected to the etching to remove said smut by the chemical method. Said Be-Cu alloy is then subjected to the plating.