Aluminum oxide-based nano-composite ceramic mold material and preparation method thereof
A composite ceramic mold and alumina technology, which is applied in the field of ceramic mold materials, can solve problems such as poor toughness, achieve the effects of preventing grain growth, improving comprehensive mechanical properties, and good comprehensive mechanical properties
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Embodiment 1
[0020] An aluminum oxide-based nanocomposite ceramic mold material, the raw materials include in parts by weight: 80 parts of aluminum oxide, 0.8 parts of lecithin, 12 parts of silicon carbide, 18 parts of calcium sulfate whiskers, 2 parts of zirconia, 3 parts of titanium oxide, 0.8 parts of zinc oxide, 1 part of molybdenum, 0.5 parts of magnesium oxide, and 1 part of nickel.
[0021] Wherein, the particle size of the aluminum oxide is 20-80nm; the particle size of the silicon carbide is 5-10nm; the particle size of the zirconium oxide, titanium oxide and zinc oxide is 10-20nm.
[0022] The titanium oxide is doped with silicon oxide, and the specific modification method is as follows: prepare the titanium oxide into a 20g / L suspension, adjust the pH value of the suspension to 10 with 0.5M sodium hydroxide solution, ultrasonically disperse, and heat up To 85°C, add dropwise 1mol / L sodium silicate aqueous solution to the suspension under stirring condition, the dosage of sodium ...
Embodiment 2
[0032] An alumina-based nanocomposite ceramic mold material, the raw materials include: 90 parts by weight of alumina, 1.1 parts of lecithin, 15 parts of silicon carbide, 20 parts of calcium sulfate whiskers, 3 parts of zirconia, 4 parts of titanium oxide, 1.8 parts of zinc oxide, 2 parts of molybdenum, 0.8 parts of magnesium oxide, and 2 parts of nickel.
[0033] Wherein, the particle size of the aluminum oxide is 20-80nm; the particle size of the silicon carbide is 5-10nm; the particle size of the zirconium oxide, titanium oxide and zinc oxide is 10-20nm.
[0034] The titanium oxide is doped with silicon oxide, and the specific modification method is as follows: prepare the titanium oxide into a 20g / L suspension, adjust the pH value of the suspension to 10 with 0.5M sodium hydroxide solution, ultrasonically disperse, and heat up To 85°C, add dropwise 1mol / L sodium silicate aqueous solution to the suspension under stirring condition, the dosage of sodium silicate is m(SiO 2 ...
Embodiment 3
[0044] An alumina-based nanocomposite ceramic mold material, the raw materials include: 100 parts by weight of alumina, 1.5 parts of lecithin, 18 parts of silicon carbide, 22 parts of calcium sulfate whiskers, 4 parts of zirconia, 5 parts of titanium oxide, Zinc oxide 2.5 parts, molybdenum 3 parts, magnesium oxide 1.2 parts, nickel 3 parts.
[0045] Wherein, the particle size of the aluminum oxide is 20-80nm; the particle size of the silicon carbide is 5-10nm; the particle size of the zirconium oxide, titanium oxide and zinc oxide is 10-20nm.
[0046] The titanium oxide is doped with silicon oxide, and the specific modification method is as follows: prepare the titanium oxide into a 20g / L suspension, adjust the pH value of the suspension to 10 with 0.5M sodium hydroxide solution, ultrasonically disperse, and heat up To 85°C, add dropwise 1mol / L sodium silicate aqueous solution to the suspension under stirring condition, the dosage of sodium silicate is m(SiO 2 ):m(TiO 2 )=1:...
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