a sic-mo 4.8 the si 3 c 0.6 Preparation method of composite material
A technology of composite materials and mixed solutions, which is applied in the field of preparation of SiC-Mo4.8Si3C0.6 composite materials, can solve the problems of high reaction temperature reaction conditions, unfavorable industrial production, complicated steps, etc., and achieve simple process steps and small particle size , Highly repeatable effect
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Embodiment 1
[0023] A SiC-Mo 4.8 Si 3 C 0.6 The preparation method of composite material, comprises the following steps:
[0024] 1) Add 0.28g of ammonium paramolybdate to 40mL of 0.1mol / L aqueous glucose solution, and fully stir until the ammonium paramolybdate is completely dissolved to obtain a mixed solution;
[0025] 2) Add 5 mL of silica sol with a mass fraction of silica of 20% (manufactured by Shandong Baite New Material Co., Ltd.) to the above mixed solution, and after magnetic stirring for 2 hours, carry out hydrothermal reaction at 180°C for 12 hours. , the reaction solution is filtered to obtain a precipitate; during the hydrothermal reaction, the filling volume ratio of the hydrothermal kettle is 50%;
[0026] 3) After washing the precipitate, dry it in a vacuum oven at 60°C for 4 hours;
[0027] 4) Place the dried precipitate in a vacuum furnace, heat treatment at 1500°C for 3 hours under the protection of argon, and finally obtain SiC-Mo 4.8 Si 3 C 0.6 composite mater...
Embodiment 2
[0029] A SiC-Mo 4.8 Si 3 C 0.6 The preparation method of composite material, comprises the following steps:
[0030] 1) Add 0.5 g of ammonium paramolybdate to 30 mL of 0.2 mol / L aqueous glucose solution, and stir until the ammonium paramolybdate is completely dissolved to obtain a mixed solution;
[0031] 2) Add 10 mL of silicon dioxide with a mass fraction of 10% silica sol to the above mixed solution, and after magnetically stirring for 4 hours, conduct a hydrothermal reaction at 200°C for 36 hours. After the reaction, filter the reaction solution to obtain a precipitate; The filling volume ratio of the hot kettle is 40%;
[0032] 3) After washing the precipitate, dry it in a vacuum oven at 100°C for 2 hours;
[0033] 4) Place the dried precipitate in a vacuum furnace, heat treatment at 1550°C for 2 hours under the protection of argon, and finally obtain SiC-Mo 4.8 Si 3 C 0.6 composite material.
Embodiment 3
[0035] A SiC-Mo 4.8 Si 3 C 0.6 The preparation method of composite material, comprises the following steps:
[0036] 1) Add 0.32 g of ammonium paramolybdate to 35 mL of 0.15 mol / L aqueous glucose solution, and stir until the ammonium paramolybdate is completely dissolved to obtain a mixed solution;
[0037] 2) Add 3 mL of silica sol with a silica mass fraction of 15% to the above mixed solution, and after magnetically stirring for 3 hours, conduct a hydrothermal reaction at 200° C. for 12 hours. After the reaction, filter the reaction solution to obtain a precipitate; The filling volume ratio of the hydrothermal kettle is 30%;
[0038] 3) After washing the precipitate, dry it in a vacuum oven at 60°C for 4 hours;
[0039] 4) Place the dried precipitate in a vacuum furnace, heat treatment at 1400°C for 4 hours under the protection of argon, and finally obtain SiC-Mo 4.8 Si 3 C 0.6 composite material.
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