COMPOSITE COATING FILM FORMING METHOD ON SURFACE OF TI AND TI ALLOY

摘要

PURPOSE: To form an anodic oxidation coating film as a composite coating film by dipping Ti (alloy) in a electrolytic bath in which the particulate of a tetrafluoroethylene resin is suspended and by applying voltage above sparking voltage. ;CONSTITUTION: The composite coating film is formed on the surface of Ti or Ti alloy by dipping Ti or Ti alloy in the electrolytic bath in which the particulates of the tetrafluoroethylene resin are suspended and by applying voltage above sparking voltage to anodic-oxidation treatment. In a forming process of the anodic oxidation coating film, the particulate 11 of tetrafluoroethylene resin suspended in the solution enters into a position, where heat is partially generated simultaneously with sparking, to weld. Since the particulate 11 of the tetrafluoroethylene resin is present in dispersed state in the coating film of the Ti anodic oxidation product or on the surface of the coating film, the wear resistance and contamination resistance of the composite coating film is improved.;COPYRIGHT: (C)1993,JPO&Japio