Aluminum silicon carbide and silicon carbide composite material and preparation method thereof
A technology of aluminum silicide and composite materials, applied in the field of composite refractory materials, can solve the problems of high cost and difficult industrialization, and achieve the effects of excellent performance, prolonged service life, and abundant raw material resources.
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[0011] Example 1
[0012] An aluminum carbide silicide and silicon carbide composite material and a preparation method thereof. Firstly, 35-40wt% clay, 30-35wt% industrial carbon powder and 30-35wt% metal aluminum powder are mixed, and the above mixture is 5-8wt% Calcium lignosulfonate, which is first dissolved into an aqueous solution and then used for ingredients, stirred for 5-15 minutes, pressed into shape, dried at 90-110℃ for 12-24 hours; then under argon atmosphere And sintering under the conditions of 1600-1700 DEG C×5-6 hours, and after natural cooling, the aluminum carbide silicide and silicon carbide composite material is prepared.
[0013] The content and particle size of the mixture in Example 1 are: SiO of clay 2 The content is ≥40wt% and the particle size is 0.1-0mm; the Al content of the metal aluminum powder is ≥90wt% and the particle size is 0.1-0mm; the C content of the industrial carbon powder is ≥80wt% and the particle size is 0.1-0mm.
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[0014] Example 2
[0015] A composite material of aluminum carbide silicide and silicon carbide and a preparation method thereof. First mix 40~45wt% of clay, 20~25wt% of industrial carbon powder and 30~35wt% of metal aluminum powder, and add 6~7wt% of sodium lignosulfonate in the above mixture. Sodium lignosulfonate is first melted into The aqueous solution is then used for compounding, stirred for 10-15 minutes, pressed and molded, dried at 80-110℃ for 18-30 hours; then sintered under argon atmosphere and at 1700-1800℃×3~4 hours , After natural cooling, the aluminum carbide silicide and silicon carbide composite material is prepared.
[0016] The content and particle size of the mixture in Example 2 are the same as those in Example 1.
Example Embodiment
[0017] Example 3
[0018] An aluminum carbide silicide and silicon carbide composite material and its preparation method: first mix 45-50wt% clay, 20-25wt% industrial carbon powder and 25-30wt% metal aluminum powder, and add 3-6wt% of the above mixture The sulfite pulp waste liquid is stirred for 5-15 minutes, pressed and molded, dried at 60-90℃ for 24~36 hours; then sintered under argon atmosphere and at 1750~1800℃×2~3 hours , After natural cooling, the aluminum carbide silicide and silicon carbide composite material is prepared.
[0019] The content and particle size of the mixture in Example 3 are the same as in Example 1.
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