High-obdurability Ti (C, N) base metal ceramic and preparation method thereof
A high-strength and toughness, base metal technology, applied in the field of high-strength and toughness Ti-based cermet and its preparation, can solve the problems of reducing the bending strength and hardness of the cermet, reducing the service life, reducing the wear resistance of materials, etc., and improving the durability. , improved service life, cost-effective effect
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Embodiment 1
[0026] Process 1: When preparing the mixture, 0.5 parts of carbon are introduced by carbon nanotubes; Ti is introduced by Ti(C,N) solid solution, which consists of 70wt% Ti(C,N) with a particle size of 9.24μm and 30wt% , Ti(C,N) composition with a particle size of 0.22 μm fine grains;
[0027] Use plasma to modify the surface of carbon nanotubes in a glow discharge plasma furnace. During the glow discharge plasma treatment process, the purity of argon gas used is ≥99.0%, and the pressure of argon gas in the furnace cavity is 40Pa. The voltage is 600V, the working current is 0.4A, and the processing time is 60min;
[0028] The mixing process is carried out in a planetary ball mill, the speed of the ball mill is 180rpm, and the time is 24h;
[0029] The add-on of molding agent polyvinyl alcohol is 3wt%, and the pressure used for compression molding is 250MPa;
[0030] The degreasing process is carried out under the condition that the vacuum degree is higher than 10Pa, and the ...
Embodiment 2
[0036] Process 2: When preparing the mixture, 0.75 parts of carbon are introduced by carbon nanotubes; Ti is introduced by Ti(C,N) solid solution, which is composed of 80wt% Ti(C,N) with a particle size of 7.68μm and 20wt% , Ti(C,N) composition with a particle size of 0.43 μm fine grains;
[0037] Using plasma to modify the surface of carbon nanotubes, it is carried out in a glow discharge plasma furnace. During the glow discharge plasma treatment process, the purity of argon gas used is ≥99.0%, and the pressure of argon gas in the furnace cavity is 80Pa. The voltage is 700V, the working current is 0.5A, and the processing time is 50min;
[0038] The mixing process is carried out in a planetary ball mill, the speed of the ball mill is 180rpm, and the time is 24h;
[0039] The addition of molding agent polyvinyl alcohol is 3wt%, and the pressure used for compression molding is 250MPa;
[0040] The degreasing process is carried out under the condition that the vacuum degree is...
Embodiment 3
[0046] Process 3: When preparing the mixture, 1.0 parts of carbon is introduced by carbon nanotubes; Ti is introduced by Ti(C,N) solid solution, which consists of 90wt% Ti(C,N) with a particle size of 5.93μm and 10wt% , Ti(C,N) composition with a particle size of 0.55 μm fine grains;
[0047] Use plasma to modify the surface of carbon nanotubes in a glow discharge plasma furnace. During the glow discharge plasma treatment process, the purity of argon gas used is ≥99.0%, and the pressure of argon gas in the furnace cavity is 100Pa. The voltage is 800V, the working current is 0.6A, and the processing time is 40min;
[0048] The mixing process is carried out in a planetary ball mill, the speed of the ball mill is 180rpm, and the time is 24h;
[0049] The addition of molding agent polyvinyl alcohol is 3wt%, and the pressure used for compression molding is 250MPa;
[0050] The degreasing process is carried out under the condition that the vacuum degree is higher than 10Pa, and t...
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