High-temperature-resistant high-wear-resistant nickel-based titanium carbide powder and preparation method thereof

• Main Authors: LI ZHENDUO, LI JIE, WAN WEIWEI, ZHANG LU, GAO FENG, LI ZHENGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2020
• Subjects: ALLOYS; CASTING; 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; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention discloses high-temperature-resistant high-wear-resistant nickel-based titanium carbide powder and a preparation method thereof, and belongs to the technical field of surface engineering.The powder comprises 50-75% of TiC and 25-50% of NiCrAlSiX, wherein in NiCrAlSiX, Cr accounts for 20-23%, Al accounts for 7-10%, Si accounts for 1-2.5%, X is W+V, the total amount of X is greater than or equal to 3% and less than or equal to 8%, and the balance Ni. By adding Ni, the stability of Cr in an iron matrix is kept, the precipitation of Cr element in a spraying process is avoided, and the corrosion resistance of a material is improved; by adding a proper amount of Al, the dissolution of TiC can be inhibited, the hardness and toughness of a coating are kept, and meanwhile, the corrosion resistance of a composite material can be improved; by adding a small amount of boron, a spraying process window can be widened; and by adding 5-20% of Mo, the corrosion resistance and wear resistance of the coating are im