COMPOSITE MEMBER AND METHOD FOR PRODUCING COMPOSITE MEMBER

A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase that bonds the diamond grains; and a coating layer made of metal and coating at least a part of a surface of the substrate. The surface of the substrate includes a surfa...

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Bibliographische Detailangaben
Hauptverfasser:	SUGISAWA, Masanori, HOSOE, Akihisa, ISHIKAWA, Fukuto, MORIGAMI, Hideaki, GOTO, Kengo, IKEDA, Tomoaki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase that bonds the diamond grains; and a coating layer made of metal and coating at least a part of a surface of the substrate. The surface of the substrate includes a surface of the metal phase, and a protrusion formed of a part of at least one diamond grain of the diamond grains and protruding from the surface of the metal phase. In a plan view, the coating layer includes a metal coating portion coating the surface of the metal phase, and a grain coating portion coating the protrusion and not coating the surface of the metal phase. A ratio of a thickness of the grain coating portion to a thickness of the metal coating portion is equal to or less than 0.80. The coating layer has a surface roughness as an arithmetic mean roughness Ra of less than 2.0 µm.