DIAMOND FILM-COATED MEMBER AND ITS PRODUCTION METHOD

• Main Authors: TAKANO SHIGETO, KANDA KAZUTAKA, KATAOKA SEIJI, TAMAOKI KENJI
• Format: Patent
• Language: English
• Published: 20.11.2008
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOUNDS THEREOF; CRYSTAL GROWTH; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

PROBLEM TO BE SOLVED: To provide a diamond film-coated member in which a diamond film is applied on an iron-based alloy with excellent adhesion; and to provide a method for producing the same. SOLUTION: An intermediate layer 10 comprising tungsten is applied on a base material 1, and the diamond film is applied on the intermediate layer 10. The intermediate layer 10 has fine areas 4 divided by grooves 3, and the longest distance 8 on the surface of each fine area 4 is set to be >100 to <450 μm. Further, the depth 12 of each groove is set to ≥10 μm to the thickness 11 of the intermediate layer or shorter. The shortest distance 2 between adjacent fine areas 4 divided by the groove 3 is set to be ≥10 μm. COPYRIGHT: (C)2009,JPO&INPIT