| 摘要 |
A diamond-like carbon film for sliding parts which is applied to the sliding surface of sliding parts, the diamond-like carbon film including at least two layers, one being a lower layer of diamond-like carbon (referred to as DLC hereinafter) and the other being an upper layer of DLC placed thereon, wherein the lower layer has a hardness no lower than 20 GPa and no higher than 45 GPa, a Young's modulus no lower than 250 GPa and no higher than 450 GPa, and a thickness no smaller than 0.2 μm and no larger than 4.0 μm, and the upper layer has a hardness no lower than 5 GPa and lower than 20 GPa, a Young's modulus no lower than 60 GPa and no higher than 240 GPa, and a thickness no smaller than 1.0 μm and no larger than 10 μm. The diamond-like carbon film has both good durability and low frictional coefficient. |
