A kind of ceramic and a kind of preparation method of ceramic and the prepared ceramic
A technology of ceramics and oxides, applied in the field of ceramics, can solve the problems of low toughness and blackness, achieve high blackness, improve drop resistance, and improve toughness
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[0022] On the other hand, the present invention provides a kind of preparation method of pottery, and this method comprises the following steps:
[0023] (1) Mix ceramic raw materials containing matrix materials, additives, toughening agents, and black coloring agents with sintering aids in an organic solvent, and then add binders and mix evenly to obtain a mixed slurry;
[0024] (2) drying the mixed slurry obtained in step (1) to remove the organic solvent to obtain a spherical powder;
[0025] (3) dry pressing the spherical powder obtained in step (2), and then sintering to obtain ceramics;
[0026] Wherein, the base material is aluminum oxide, the additive contains strontium carbonate, and during the sintering process, both the toughening agent and the black coloring agent can form strontium oxide with a perovskite structure with the additive.
[0027] According to the preparation method of the present invention, strontium carbonate may be partially substituted by calcium ...
Embodiment 1
[0050] This example is used to illustrate the preparation method of the ceramic of the present invention.
[0051] Ceramic raw materials: 200g of alumina, 2g of strontium carbonate, 1g of manganese carbonate, 0.4g of tantalum pentoxide. The sintering aid is 0.4g of silica, the binder is a mixture of 0.8g of polyethylene glycol 4000 and polyvinyl alcohol (mass ratio 1:1), and the organic solvent is alcohol.
[0052] Mix the above weight of ceramic raw materials with 0.4g of silicon dioxide in 100mL of organic solvent for 4 hours, then add 2g of dispersant, and then add 0.8g of binder to continue ball milling for half an hour to obtain a mixed slurry , and then send the mixed slurry into the spray tower for spray drying until the mixed slurry is completely dried into a spherical powder, and then the spherical powder is dried under the parameter conditions of a press with a tonnage of 180 tons and an oil pressure of 6 MPa Compression molding, sintering under the following sinter...
Embodiment 2
[0055] This example is used to illustrate the preparation method of the ceramic of the present invention.
[0056] Ceramic raw materials: 200g of alumina, 6g of strontium carbonate, 4g of manganese carbonate, and 2.6g of tantalum pentoxide. The sintering aid is 0.6g of silica, the binder is a mixture of 1g of polyethylene glycol 4000 and polyvinyl alcohol (mass ratio 1:1.5), and the organic solvent is alcohol.
[0057] The ceramic raw material of the above quality and 0.6g of silicon dioxide were ball milled in 120mL of organic solvent for 6 hours and mixed evenly, then 3g of dispersant was added, and 1g of binder was added to continue ball milling for half an hour to obtain a mixed slurry. Then the mixed slurry is sent to the spray tower for spray drying until the mixed slurry is completely dried into a spherical powder, and then the spherical powder is dry pressed in a press with a tonnage of 180 tons and an oil pressure of 6 MPa. Forming, sintering under the following sint...
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