METHOD FOR MANUFACTURING ELECTRIC CONTACT MATERIAL, AND ELECTRIC CONTACT MATERIAL

[Problem] To provide a method for manufacturing an electric contact material that can improve productivity, and an electric contact material. [Solution] A method for manufacturing an electric contact material 30 comprises: a step for performing a plasma treatment on at least part of the surface of a substrate 10 constituted by an alloy that contains Ag and Sn; and a step for performing an internal oxidation treatment on the plasma-treated substrate 10 under an oxygen gas atmosphere at a given temperature.