Plated Member And Manufacturing Method Thereof

Abstract: A plated member, the outer surface of which has a plating film thereon which contains at least chromium, carbon and oxygen and has chromium which uses a trivalent chromium bath as a main component thereof, wherein: the plating film contains chromium in the amount of 60 at% or more, and carbon in the amount of 1-30 at%; the indentation hardness of the outer surface is at least 11.1 GPa; and the degree of crystallization calculated on the basis of formula (1) and the peak integrated intensity ratio of a measured value obtained by X-ray diffraction measurement is at least 5%. Formula (1): degree of crystallization (peak integrated intensity ratio)={(crystalline)/(crystalline+amorphous)}×100%. Herein, the indentation hardness expresses the value of an instrumented indentation hardness measurement via a nano-indentation method (ISO14577), and the integrated intensity ratio in formula (1) expresses a value obtained in X-ray diffraction (XRD) analysis with 2? being 30-60°, the crystalline half-value width being <3 and the amorphous half-value width being =3.

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