PROBLEM TO BE SOLVED: To provide a material for implant comprising: 1) mechanical strength and appropriate elasticity property； 2) surface hardness and slidability； 3) bonding function to bone tissue； 4) recovery promoting function of bone tissue itself； and 5) antibacterial characteristic for suppressing proliferation of bacteria.SOLUTION: In a material for implant, a substrate holding a workpiece and a zinc target substrate arranged opposing to the substrate are installed into a vacuum furnace, sputtering on the zinc target substrate is performed by applying sputtering voltage that consists of high output impulse voltage having a predetermined pulse width between both substrates by substrate voltage applying means under introduction of a predetermined amount of rare gas into a vacuum furnace, and amorphous carbon film containing a desired zinc amount is deposited on the surface of the workpiece held by the substrate by applying voltage that consists of high output impulse voltage having a predetermined pulse width between both substrates while a predetermined amount of rare gas and hydrocarbon-based raw material gas are introduced into the vacuum furnace. In a film deposition method of an amorphous carbon film, the pulse width is 500 to less than 1000 μsec.SELECTED DRAWING: Figure 1
