Study on the anti-corrosion performance of multi-functional additives used in coolant for solder material

Abstract

This work presented the corrosion protection performance of anticorrosion multi-metal hybrid (AC-2MH) complex additive for solder materials in corrosive media. The AC-2MH complex contained traditional additives and organic acids. The Electrochemical impedance spectroscopy results demonstrated the formation of active and passive protective layers on the surface of the alloys, which prevented the solder materials from corrosion. The electrochemical analysis also indicated that the multifunctional additive had the capability of inhibiting the corrosion rate up to 97-99% under normal conditions (30-40 ^oC). At high temperatures (60-70 ^oC), the corrosion inhibition efficiency was significantly reduced to 89-94%.