Silicon carbide ceramic product and preparation method
A silicon carbide ceramic and silicon carbide technology, which is applied in fire-resistant coatings and other directions, can solve the problems of easy damage to equipment parts, high equipment maintenance costs, and generally expensive construction costs, so as to achieve easy industrialization, high production efficiency, and improved corrosion resistance. Effect
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Embodiment 1
[0020] (1) Ingredients: Calculated according to mass percentage, the specific composition ratio is shown in Table 1.
[0021] Table I
[0022]
[0023] Accurately weigh the above raw materials according to Table 1, with an accuracy of 0.1g. Put the weighed silicon carbide powder, silicon carbide powder, B 4 C micropowder is kneaded in a planetary ball mill for 30 minutes to prepare a mixed fine powder. Then mix the silicon carbide particles in the mixer for 5 minutes, add the binder, mix for 5 minutes, and finally add the mixed powder, and mix for 15 minutes to ensure that the materials have been mixed.
[0024] (2) Forming: The mixed materials are pressed into a pre-defined size blank by a forming machine.
[0025] (3) Drying: The molded body is placed in a drying equipment, and the temperature is slowly raised at a rate of 1°C / min. The temperature is raised to 200°C and then kept for 8 hours.
[0026] (4) Sintering: Put the dried green body in a silicon carbide smelting furnace, and...
Embodiment 2
[0030] (1) Ingredients: Calculated according to the mass percentage, the specific composition ratio is shown in Table 2.
[0031] Table II
[0032]
[0033] Accurately weigh the above raw materials according to Table 1, with an accuracy of 0.1g. Put the weighed silicon carbide powder, silicon carbide powder, B 4 C micropowder is kneaded in a planetary ball mill for 30 minutes to prepare a mixed fine powder. Then mix the silicon carbide particles in the mixer for 5 minutes, add the binder, mix for 5 minutes, and finally add the mixed powder, and mix for 15 minutes to ensure that the materials have been mixed.
[0034] (2) Forming: The mixed materials are pressed into a pre-defined size blank by a forming machine.
[0035] (3) Drying: The molded body is placed in a drying device, and the temperature is raised at a rate of 1°C / min. After the temperature is raised to 200°C, it is kept for 8 hours.
[0036] (4) Sintering: Put the dried green body in a silicon carbide smelting furnace, and ...
Embodiment 3
[0040] (1) Ingredients: Calculated by mass percentage, the specific composition ratio is shown in Table 3.
[0041] Table Three
[0042]
[0043] Accurately weigh the above raw materials according to Table 1, with an accuracy of 0.1g. The weighed silicon carbide fine powder, silicon carbide fine powder, and B fine powder are kneaded in a planetary ball mill for 30 minutes to prepare mixed fine powder. Then mix the silicon carbide particles in the mixer for 5 minutes, add the binder, mix for 5 minutes, and finally add the mixed powder, and mix for 15 minutes to ensure that the materials have been mixed.
[0044] (2) Molding: The mixed materials are pressed into a product of predetermined size with a molding machine.
[0045] (3) Drying: The molded body is placed in a drying device, and the temperature is raised at a rate of 1°C / min. After the temperature is raised to 200°C, it is kept for 8 hours.
[0046] (4) Sintering: Put the dried silicon carbide body in a silicon carbide smelting ...
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