Synergistic Toughening of Polycrystalline Cubic Boron Nitride with Three Dimensions Materials
A technology of cubic boron nitride and polycrystalline cubic, which is applied in the field of preparation of synergistically toughened polycrystalline cubic boron nitride with three-dimensional materials, can solve the problems of high requirements for auxiliary materials and increased costs
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[0016] A method for preparing synergistically toughened polycrystalline cubic boron nitride with three-dimensional materials of the present invention comprises the following steps:
[0017] (1) Carry out surface high-energy treatment of cubic boron nitride powder, the equipment is a high-energy ball mill, the material of the ball mill is tungsten carbide, the material of the ball is high-density cemented carbide, the rotor speed is 580 rpm, and the ball milling time is 15 hours. Material: ball = 1:17, boiled with acid to disperse;
[0018] (2) Treat the obtained cubic boron nitride powder, zero-dimensional zirconia powder, one-dimensional silicon nitride whisker and two-dimensional graphene material by mass percentage 98.7~99.2%: 0.2~0.4%: 0.1~0.3% : 0.3 ~ 0.6% weighing, put into planetary ball mill for uniform refinement, material: ball = 1: 6 ~ 9;
[0019] (3) Dry the powder, put it into a spark plasma sintering furnace and sinter it into a shape. The sintering temperature ...
Embodiment 1
[0022] (1) Carry out surface high-energy treatment of cubic boron nitride powder, the equipment is a high-energy ball mill, the material of the ball mill is tungsten carbide, the material of the ball is high-density cemented carbide, the rotor speed is 580 rpm, and the ball milling time is 15 hours. Material: ball = 1:17, boiled with acid to disperse;
[0023] (2) Weigh the cubic boron nitride powder, zero-dimensional zirconia powder, one-dimensional silicon nitride whisker and two-dimensional graphene material by mass percentage of 99.2%: 0.2%: 0.1%: 0.5%, Put it into a planetary ball mill and refine it evenly, material: ball = 1:9;
[0024] (3) Dry the powder and put it into a spark plasma sintering furnace to sinter and shape it. The sintering temperature is 1380°C, heat preservation for 5 minutes, the heating rate is 900°C / min, and the cooling rate is 50°C / min to obtain a polycrystalline cubic boron nitride material.
Embodiment 2
[0026] (1) Carry out surface high-energy treatment of cubic boron nitride powder, the equipment is a high-energy ball mill, the material of the ball mill is tungsten carbide, the material of the ball is high-density cemented carbide, the rotor speed is 580 rpm, and the ball milling time is 15 hours. Material: ball = 1:17, boiled with acid to disperse;
[0027] (2) Weigh the cubic boron nitride powder, zero-dimensional zirconia powder, one-dimensional silicon nitride whisker and two-dimensional graphene material by mass percentage 99%: 0.4%: 0.2%: 0.4% of the obtained cubic boron nitride powder, Put it into a planetary ball mill and refine it evenly, material: ball = 1:8;
[0028] (3) Dry the powder and put it into a spark plasma sintering furnace to sinter and shape it. The sintering temperature is 1450°C, heat preservation for 3 minutes, the heating rate is 900°C / min, and the cooling rate is 50°C / min to obtain polycrystalline cubic boron nitride material.
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