Patent ID: 8808858

Claim:
A method for producing a diamondlike carbon hard multilayer film formed body, the method comprising forming an intermediate layer on a substrate by sputtering; forming a first diamondlike carbon film on the intermediate layer by sputtering; and forming a second diamondlike carbon film on the first diamondlike carbon film by cathode discharge type arc ion plating, thereby forming the diamondlike carbon hard multilayer film formed body; wherein the diamondlike carbon hard multilayer film comprises the substrate, a diamondlike carbon film comprising mainly diamondlike carbon, and the intermediate layer between the substrate and the diamondlike carbon film; wherein the diamondlike carbon film comprises, in order from the substrate, the first diamondlike carbon film and the second diamondlike carbon film, wherein a surface hardness of the first diamondlike carbon film ranges from not less than 10 GPa to not more than 40 GPa, based on nanoindentation test, and wherein a surface hardness of the second diamondlike carbon film ranges from more than 40 GPa to not more than 90 GPa based on nanoindentation test, wherein the first diamondlike carbon film has a thickness of from 0.5 to 1.2 μm; the second diamondlike carbon film has a thickness larger than 1.2 and 3.1 μm or less.