Patent ID: 8501276
Filing Date: 2013-08-06
Classification: B24D,C03C,C23C,G02B,Y10T

Abstract:
1. A method for producing a laminate comprising a substrate and a carbon film comprising an aggregate of a carbon particle, the method comprising: preparing the substrate; depositing a fine diamond particle on the substrate; and depositing the carbon film comprising the aggregate of a carbon particle having a grain size of 1 to 100 nm on the fine diamond particle deposited on the substrate by using a gas mixture comprising hydrogen, 0.5 to 10 mol % of a carbon-containing gas, and 0.5 to 10 mol % of CO or CO wherein the carbon film is produced by using a surface wave plasma CVD apparatus, wherein a quartz member is used as a window in said CVD apparatus for microwave transmission, wherein the carbon film has an approximate spectrum curve obtainable by superimposing, on a peak fitting curve A at a Bragg's angle (2θ±0.3°) of 43.9°, a peak fitting curve B at 41.7° and a base line in an X-ray diffraction spectrum by CuK wherein the laminate comprises: a cubic diamond in which a peak is observed at 2θ of 43.9°±0.3° in the X-ray diffraction spectrum; and a defect in which a peak is observed at 2θ of 41.7°±0.3° in the X-ray diffraction spectrum, wherein the defect comprises a hexagonal diamond and a lamination defect.