HEAT EXCHANGER MEMBER AND PRODUCTION METHOD THEREOF

摘要

In some embodiments of the invention, a heat exchanger member high in corrosion resistance and excellent in brazing performance can be stably produced at low cost. A production method of a heat exchanger member 2 to be brazed comprises the step of spraying particulate powder of metal less noble in corrosion potential than Al, an alloy of the metal or a composition of the metal at 150 °C or less at high speed onto a surface of a substrate 2a of aluminum or its alloy to thereby make the particulate powder adhere to the surface. The metal is diffused in the surface layer portion of the substrate 2a by the brazing heating to form a sacrificial corrosive layer.