Zirconium titanium carbide particle reinforced silicon aluminum titanium carbide zirconium based composite material and preparation thereof
A particle-reinforced, zirconium-titanium carbide technology, applied in the field of ceramic matrix composite materials and preparation, can solve the problems of low hardness and wear resistance, decreased high temperature strength, limited wide application, etc., to achieve enhanced enhancement effect, good compatibility, high purity effect
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Embodiment 1
[0024] 103.48 grams of titanium powder, 33.12 grams of zirconium powder, 26.40 grams of silicon powder, 0.52 grams of aluminum powder, and 20.68 grams of graphite (enhanced phase (Zr 0.935 Ti 0.065 ) The content of C is about 5vol.%, and the matrix is (Ti 0.9 Zr 0.1 ) Si 0.98 al 0.02 C 2 ) in an alcohol medium for 10 hours, then put it into a graphite mold for cold pressing, the applied pressure is 5MPa, and put it into a hot-press furnace for hot-press sintering. The heating rate is 15°C / min, heated to 1550°C, and at the same time, the pressure is gradually increased to 25MPa, and the temperature is kept for 1 hour. Then the temperature was lowered to 1400°C, and the temperature was kept at 1400°C for 0.5 hours, and the pressure was maintained at 25MPa during the whole heat preservation process. The whole sintering process is carried out under the protection of argon, and the obtained reaction product is mainly (TiZr) through X-ray diffraction analysis. 3 Si(Al)C 2 ...
Embodiment 2
[0026] 96.02 grams of titanium powder, 42.28 grams of zirconium powder, 23.78 grams of silicon powder, 1.20 grams of aluminum powder, and 20.72 grams of graphite (enhanced phase (Zr 0.92 Ti 0.08 ) The content of C is about 10vol.%, and the matrix is (Ti 0.9 Zr 0.1 ) Si 0.98 al 0.02 C 2 ) was ball milled in alcohol medium for 15 hours, then put into a graphite mold and cold-pressed to form, the applied pressure was 5MPa, and put into a hot-press furnace for hot-press sintering. The heating rate is 10°C / min, heated to 1560°C, while the pressure is gradually increased to 30MPa, and kept for 1 hour. Then the temperature was lowered to 1400°C, and the temperature was kept at 1400°C for 0.5 hours, and the pressure was maintained at 30MPa during the whole heat preservation process. The whole sintering process is carried out under the protection of argon, and the obtained reaction product is analyzed by X-ray diffraction as (TiZr) 3 Si(Al)C 2 and (ZrTi)C, (ZrTi)C dispersed i...
Embodiment 3
[0028] The particle size range is 82.12 grams of titanium powder, 59.70 grams of zirconium powder, 20.34 grams of silicon powder, 2.04 grams of aluminum powder, and 20.82 grams of graphite (enhanced phase (Zr 0.93 Ti 0.07 ) The content of C is about 20vol.%, and the matrix is (Ti 0.9 Zr 0.1 ) Si 0.90 al 0.10 C 2 ) in an alcohol medium for 20 hours, then put it into a graphite mold for cold pressing, and the applied pressure is 10MPa, and put it into a hot-press furnace for hot-press sintering. The heating rate is 20°C / min, heated to 1600°C, while the pressure is gradually increased to 40MPa, and kept for 1 hour. Then the temperature was lowered to 1400°C, and the temperature was kept at 1400°C for 0.5 hours, and the pressure was maintained at 40MPa during the whole heat preservation process. The whole sintering process is carried out under the protection of argon, and the obtained reaction product is analyzed by X-ray diffraction as (TiZr) 3 Si(Al)C 2 and (ZrTi)C, (Z...
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