STRUCTURE CONTROL TECHNOLOGY OF COATING LAYER AND INTERFACE FOR IMPROVING DURABILITY OF NEXT GENERATION MULTILAYER COATED TOOLS FOR ULTRA-HIGH SPEED CUTTING

摘要

Purpose: in order to understand the process of arc ion plating and structure and the experimental condition of feature the research life and abrasion shape that pass through the tool of X-ray analysis and coating of TiN film, it enables high-speed cutting by TiN, TiAlN, TiC and the covering film of aluminium oxide, wear-resisting film, on cutting tool, to improve the friction characteristics of abrasion and cutting tool. Construction: the durability characteristics that the structure control technique and interface of coating are used to improve the superfast next-generation multilayer coat tool for cutting are, this is the best coating process of a CrN coating, when the 0. of a diffraction angle of analysed film after 20 to 80 degree coat a film on a matrixWhen 5 stepsize, when a bias voltage increases, wherein the CrN of surface (111), (200) and (220) preferably grows up; When voltage increases, the growth of CrN is main; When bias voltage is low, a broad peak of amorphous phase is shown, but when bias voltage is high, the crystalline phase at peak is shown, is low when bias voltage increase from bias voltage is worked as, when one peak is shown, since a broad peak is shown; The crystal structure of Cr2N is hexagonal, and the crystal structure of CrN is cube; When bias voltage increases, coating is changed to the unbodied of crystallization, and the direction of CrN coatings is paid the utmost attention on (111) and (200) surface.