| 摘要 |
A production method of a heat exchanger member to be brazed includes 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 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 by the brazing heating to form a sacrificial corrosive layer.
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