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  • 专利标题:   Preparing titanium-aluminum-chromium-niobium pre-alloy spherical powder and single graphene layer sheet nanometre sheet, comprises e.g. adding titanium-48-alumina-nickel-boron powder and adding absolute ethyl alcohol for low energy ball milling.
  • 专利号:   CN115255359-A
  • 发明人:   MAO Z, MA D, HOU B, WANG W, WANG A, XIE J, WANG Z, LIU P
  • 专利权人:   UNIV HENAN SCI TECHNOLOGY
  • 国际专利分类:   B22F001/065, B22F001/16, B22F003/105, B22F003/24, B22F009/04, C22C001/05, C22C014/00, C22C032/00
  • 专利详细信息:   CN115255359-A 01 Nov 2022 B22F-001/16 202297 Chinese
  • 申请详细信息:   CN115255359-A CN10701355 21 Jun 2022
  • 优先权号:   CN10701355

▎ 摘　　要

NOVELTY - Preparing titanium aluminum carbide/titanium aluminum (Ti2AlC/TiAl) composite material includes adding titanium-aluminum-chromium-niobium (Ti-48Al-2Cr-2Nb) pre-alloyed spherical powder and single-layer graphene nanosheets into a ball milling tank, adding absolute ethanol to perform low-energy ball milling under the protection of inert gas to obtain single-layer graphene nanosheet-coated titanium aluminum composite powder. The nominal composition of single-layer graphene nanosheet coated titanium aluminum composite powder is Ti-48Al-2Cr-2Nb-2.5C. The obtained single-layer graphene nanosheet-coated composite powder is placed in a graphite mold to obtain Ti2AlC/TiAl composite block in which the reinforcing phase is distributed in a network shape by spark plasma sintering. USE - Method for preparing titanium aluminum carbide/titanium aluminum (Ti2AlC/TiAl) composite material with network-layer structure used in aerospace light high temperature structure. ADVANTAGE - The composite material with net-layer structure can effectively improve the service temperature and high temperature strength of titanium aluminum alloy. DETAILED DESCRIPTION - Preparing titanium aluminum carbide/titanium aluminum (Ti2AlC/TiAl) composite material includes adding titanium-aluminum-chromium-niobium (Ti-48Al-2Cr-2Nb) pre-alloyed spherical powder and single-layer graphene nanosheets into a ball milling tank, adding absolute ethanol to perform low-energy ball milling under the protection of inert gas to obtain single-layer graphene nanosheet-coated titanium aluminum composite powder. The nominal composition of single-layer graphene nanosheet coated titanium aluminum composite powder is Ti-48Al-2Cr-2Nb-2.5C. The obtained single-layer graphene nanosheet-coated composite powder is placed in a graphite mold to obtain Ti2AlC/TiAl composite block in which the reinforcing phase is distributed in a network shape by spark plasma sintering. The obtained Ti2AlC/TiAl composite block is placed in a vacuum heat treatment furnace for heat treatment, and cooled down to room temperature with the furnace to obtain the composite material with a network-sheet two-level structure.