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Binding-phase-free WC-based hard alloy cutter material and preparation method thereof
The invention discloses a binding-phase-free WC-based hard alloy cutter material and a preparation method thereof. According to the invention, tungsten carbide is used as a base material; nano complexphase ceramic doping is adopted, and the effects of defect reinforced sintering and liquid-phase reinforced sintering are synergistically exerted; meanwhile, two-dimensional graphene nanosheets and one-dimensional carbon nanotubes are hybridized to serve as a synergistic strengthening and toughening phase and a densification phase of the binding-phase-free WC-based hard alloy cutter material; thegraphene is loaded with carbon nanotube, the graphene is supported by the carbon nanotubes; a three-dimensional strengthening and toughening and rapid heat conduction network is constructed; dispersing agents which enable the two components to be mutually dispersed; a contact area of the graphene-carbon nano tube and a cutter material matrix is increased, and a graphene and carbon nano tube synergistic toughening mechanism and a synergistic heat conduction mechanism are formed in the aspect of function, so that the bending strength, Vickers hardness and fracture toughness mechanical properties of the obtained binding-phase-free WC-based hard alloy cutter material are greatly improved. The adopted graphene-carbon nanotube three-dimensional space structure has a high heat conduction coefficient, and the heat dissipation capacity of the cutter is greatly improved.
本发明公开了一种无粘结相WC基硬质合金刀具材料及其制备方法，以碳化钨为基料，采用纳米复相陶瓷掺杂，协同发挥缺陷强化烧结与液相强化烧结作用，同时将二维的石墨烯纳米片和一维的碳纳米管杂化作为无粘结相WC基硬质合金刀具材料的协同强韧化相与致密化相，石墨烯负载碳纳米管，碳纳米管支撑石墨烯，构筑三维强韧化和快速热传导网络，使二者互为彼此的分散剂，增加石墨烯‑碳纳米管与刀具材料基体的接触面积且在功能方面形成石墨烯与碳纳米管协同强韧化机制与协同导热机制，得到的无粘结相WC基硬质合金刀具材料抗弯强度、维氏硬度和断裂韧性力学性能大大提高。采用石墨烯‑碳纳米管三维空间结构具有较高的热传导系数，大幅度提升刀具的散热能力。
Binding-phase-free WC-based hard alloy cutter material and preparation method thereof
The invention discloses a binding-phase-free WC-based hard alloy cutter material and a preparation method thereof. According to the invention, tungsten carbide is used as a base material; nano complexphase ceramic doping is adopted, and the effects of defect reinforced sintering and liquid-phase reinforced sintering are synergistically exerted; meanwhile, two-dimensional graphene nanosheets and one-dimensional carbon nanotubes are hybridized to serve as a synergistic strengthening and toughening phase and a densification phase of the binding-phase-free WC-based hard alloy cutter material; thegraphene is loaded with carbon nanotube, the graphene is supported by the carbon nanotubes; a three-dimensional strengthening and toughening and rapid heat conduction network is constructed; dispersing agents which enable the two components to be mutually dispersed; a contact area of the graphene-carbon nano tube and a cutter material matrix is increased, and a graphene and carbon nano tube synergistic toughening mechanism and a synergistic heat conduction mechanism are formed in the aspect of function, so that the bending strength, Vickers hardness and fracture toughness mechanical properties of the obtained binding-phase-free WC-based hard alloy cutter material are greatly improved. The adopted graphene-carbon nanotube three-dimensional space structure has a high heat conduction coefficient, and the heat dissipation capacity of the cutter is greatly improved.
本发明公开了一种无粘结相WC基硬质合金刀具材料及其制备方法，以碳化钨为基料，采用纳米复相陶瓷掺杂，协同发挥缺陷强化烧结与液相强化烧结作用，同时将二维的石墨烯纳米片和一维的碳纳米管杂化作为无粘结相WC基硬质合金刀具材料的协同强韧化相与致密化相，石墨烯负载碳纳米管，碳纳米管支撑石墨烯，构筑三维强韧化和快速热传导网络，使二者互为彼此的分散剂，增加石墨烯‑碳纳米管与刀具材料基体的接触面积且在功能方面形成石墨烯与碳纳米管协同强韧化机制与协同导热机制，得到的无粘结相WC基硬质合金刀具材料抗弯强度、维氏硬度和断裂韧性力学性能大大提高。采用石墨烯‑碳纳米管三维空间结构具有较高的热传导系数，大幅度提升刀具的散热能力。
Binding-phase-free WC-based hard alloy cutter material and preparation method thereof
一种无粘结相WC基硬质合金刀具材料及其制备方法
SUN JIALIN (author) / HUANG ZHIFU (author) / YAN KE (author) / CHEN FEI (author) / JIAN YONGXIN (author) / YANG HEJIE (author) / LI BO (author)
2020-04-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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