Wear-resistant composite coating structure and cutting tool

• Main Authors: DONG YONGFEN, ZHANG MINJIE, XING JIANJUN, ZHOU TIANYUAN
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: BORING; 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; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TURNING

The utility model provides a wear-resistant composite coating structure and a cutting tool. The composite coating structure comprises a hard coating and a lubricating layer formed on the hard coating, a plurality of bubble holes are randomly distributed in the hard coating, the hole diameter of the bubble holes is 10-50 nm, and the volume density of the bubble holes in the hard coating is 20%-50%. Thus, the heat conductivity of the hard coating can be remarkably reduced, the heat insulation and heat resistance effects are achieved, meanwhile, a certain cutting pressure relieving effect is achieved, and the hard coating has the abrasion resistance, the certain heat resistance and the certain cutting pressure impact resistance. Therefore, according to the cutting tool comprising the composite coating structure provided by the utility model, the high-temperature stability of the tool base body and the integrity of the cutting edge are kept, and the abrasion of the crescent depression is reduced. 本实用新型提供了一种耐磨损复合涂