High pure aluminum alloy chemical nickel-plating activated liquid and activating technique thereof

TLDR: In this article, the authors provided high purity aluminum alloy electroless nickel plating activation solution, which uses water as solvent, per liter of solution comprises 10-40g phosphoric acid, 2-10g boric acid and 5-30g acetic acid.

Abstract: The invention provides high purity aluminum alloy electroless nickel plating activation solution, which uses water as solvent, per liter of solution comprises 10-40g phosphoric acid, 2-10g boric acid, 5-30g acetic acid, 2-6g thiourea, 10-25g ammonium sulfate, 10-30g trisodium phosphate and 15-40g ammonium bifluoride. The technological process of the process of treating the surface of aluminum alloy using the high purity aluminum alloy electroless nickel plating activation solution comprises degreasing, obtained cleaning surface, activation and subsequent processing, after the aluminum alloy which is needed to be activated is degreased and discharged form the cleaning surface, the aluminum alloy which is socked in 20-55 DEG C is put in the high purity aluminum alloy electroless nickel plating activation solution for 30-300 seconds, a layer of thin sand face which has excellent attachment is capable of being formed on the surface of an aluminum matrix, and a coating with excellent adhesion is capable of being obtained on the thin sand surface.