Method for preparing C/W2B5 composite material
A composite material, W2B5 technology, applied in the field of preparation of C/W2B5 composite materials, can solve the problem that it is difficult to obtain carbon/ceramic composite materials with excellent conductivity and high strength
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specific Embodiment approach 1
[0004] Specific embodiment one: the operation steps of this embodiment are: a. B with a particle size of 0.1 μm to 20 μm 4 C powder, WC powder with a particle size of 0.1 μm to 20 μm, carbon black powder with a particle size of 15nm to 200nm as raw materials, B 4 C: WC: the mol ratio of carbon black is (4 ~ 6): (7 ~ 9): (0 ~ 120), according to conventional process mixing; b. the mixed material is packed in the graphite mould; c. then Place in a high-vacuum hot-press furnace, sinter in vacuum or protective gas, the sintering temperature is 1600°C-2200°C, the pressure applied to the graphite mold is 15MPa-45MPa, and the holding time is 0.5-3 hours.
specific Embodiment approach 2
[0005] Specific embodiment two: the operation steps of this embodiment are: a. B with a particle size of 0.1 μm to 7 μm 4 C powder, WC powder with a particle size of 0.1 μm to 7 μm, B 4 The molar ratio of C:WC is 4:7, mix according to the conventional process; b. put the mixed material into the graphite mold; c. then place it in a high-vacuum hot-press furnace, sinter in vacuum or protective gas, The sintering temperature is 1600°C-1800°C, the pressure applied to the graphite mold is 15MPa-25MPa, and the holding time is 0.5-1.2 hours.
specific Embodiment approach 3
[0006] Specific embodiment three: the operation steps of this embodiment are: a. B with a particle size of 7.1 μm to 14 μm 4 C powder, WC powder with a particle size of 7.1 μm to 14 μm, B 4 The molar ratio of C:WC is 5:8, and the materials are mixed according to the conventional process; b. put the mixed materials into graphite molds; c. then place them in a high-vacuum hot-press furnace and sinter in vacuum or protective gas, The sintering temperature is 1801°C-2000°C, the pressure applied to the graphite mold is 25.1MPa-35MPa, and the holding time is 1.3-2.1 hours. This mode is the preferred mode.
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