Coating particles for steel rail surface, preparation method and spraying method

• Main Authors: CHEN YI, LUO HONG, ZHANG TINGWEI, WU WENJIE, GUO YANHONG, SONG YAN, TANG QIANKUN, XIA JINBO
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; 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 COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention belongs to the technical field of rail surface protection, and particularly relates to coating particles for the surface of a steel rail, a preparation method and a spraying method. The coating particles are composed of NiCr alloy particles and TiB2 ceramic particles; wherein the mass ratio of the NiCr alloy particles is 41%-60%, and the mass ratio range of the TiB2 ceramic particles is 40%-59%. Wherein in the coating particles, NiCr alloy and TiB2 ceramic composite powder are selected as raw materials, NiCr has the characteristics of good shape stability, electrical conductivity and thermal conductivity, excellent wear resistance, corrosion resistance and the like, TiB2 ceramic has the characteristics of high hardness, high strength, high wear resistance and high modulus, and the defects that NiCr alloy is low in hardness and poor in wear resistance can be overcome. TiB2 is conductive ceramic and is compounded with NiCr, the advantages of good plasticity and corrosion resistance of NiCr and hig