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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[0025] Example 1:
[0026] Process 1: When formulating the mixture, 0.5 parts of carbon is introduced by carbon nanotubes; Ti is introduced by Ti(C,N) solid solution, the solid solution is made of 70wt% Ti(C,N) with a particle size of 9.24μm and 30wt% 、The composition of Ti(C,N) with a grain size of 0.22μm;
[0027] The surface modification treatment of carbon nanotubes by plasma is carried out in a glow discharge plasma furnace. During the glow discharge plasma treatment, the purity of the argon used is ≥99.0%, and the argon pressure in the furnace cavity is 40 Pa. 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 added amount of forming 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 degre...
Example Embodiment
[0035] Example 2:
[0036] Process 2: When preparing the mixture, 0.75 parts of carbon is introduced by carbon nanotubes; Ti is introduced by Ti(C,N) solid solution, the solid solution is composed of 80wt% Ti(C,N) with a particle size of 7.68μm and 20wt% 、The composition of Ti(C,N) with a grain size of 0.43μm;
[0037] The surface modification treatment of carbon nanotubes by plasma is carried out in a glow discharge plasma furnace. During the glow discharge plasma treatment, the purity of argon used is ≥99.0%, and the pressure of argon filled into the furnace cavity is 80 Pa. 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 added amount of forming 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 ...
Example Embodiment
[0045] Example 3:
[0046] Process 3: When preparing the mixture, 1.0 part of carbon is introduced by carbon nanotubes; Ti is introduced by Ti(C,N) solid solution, the solid solution is made of 90wt% Ti(C,N) with a particle size of 5.93μm and 10wt% 、The composition of Ti(C,N) with a grain size of 0.55μm;
[0047] The surface modification treatment of carbon nanotubes by plasma is carried out in a glow discharge plasma furnace. During the glow discharge plasma treatment, the purity of argon used is ≥99.0%, and the pressure of argon filled into the furnace chamber is 100 Pa. 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 added amount of forming 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 v...
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