Method for synergistically reducing friction coefficient of tantalum-tungsten alloy through surface texture and solid coating

• Main Authors: ZHAO QIJIAN, JIANG LIANG, QIAN LINMAO, WANG PAN, PENG WUMAO, ZHAN DONGZHOU, SUN PENGFEI
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; 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; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses a method for cooperatively reducing the friction coefficient of tantalum-tungsten alloy through a surface texture and a solid coating, the surface texture is selected from one or more of a parallel groove, a net-shaped groove, a V-shaped groove, a circular pit, an oval pit, an annular pit, a rectangular pit, a rhombic pit and a polygonal pit, the size of the surface texture is in a micron order, and the solid coating is a solid coating. The solid coating is selected from one or more of polytetrafluoroethylene, polyether-ether-ketone, molybdenum disulfide, tungsten disulfide, graphite, graphene and diamond-like carbon. In order to solve the problem that the friction force of a tantalum-tungsten alloy movable part in some application scenes is too large, the friction coefficient is reduced by one order of magnitude under the dry friction condition by utilizing the synergistic effect of the surface texture and the solid coating, and the service performance of the tantalum-tungsten alloy p