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Zirconium-based composite ceramic material, preparation method thereof, and shell or ornament

A technology of composite ceramics and ceramic materials, which is applied in the field of zirconium-based composite ceramic materials and its preparation method and shells or decorations, can solve the problems of inconspicuous effects, inability to prepare thin slices, and low strength of ceramic samples, so as to improve toughness and Effect of drop resistance

Active Publication Date: 2020-03-31
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of ceramic can play a part of the toughening effect by doping Mg, but this effect is not obvious
Moreover, the strength of ceramic samples prepared by this method is on the low side, only about 590 MPa, such strength cannot prepare large-area thin slices (easy to break)

Method used

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  • Zirconium-based composite ceramic material, preparation method thereof, and shell or ornament
  • Zirconium-based composite ceramic material, preparation method thereof, and shell or ornament
  • Zirconium-based composite ceramic material, preparation method thereof, and shell or ornament

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preparation example Construction

[0027] The present invention further provides a method for preparing a zirconium-based composite ceramic material. The preparation method comprises the following steps, wherein the SrCO 3 Powder and Nb 2 o 5 The molar ratio of the powder is 2x:1, 0.7≤x≤0.95: S1, the zirconia powder, SrCO 3 Powder and Nb 2 o 5 The powder and the binder are mixed to form a mixed slurry; S2, the mixed slurry is sequentially dried, shaped, and sintered to form the zirconium-based composite ceramic material.

[0028] This method provided above by the present invention, by adding SrCO 3 Powder and Nb 2 o 5 Powder (the two have similar effects to sintering aids), can relatively reduce the sintering temperature of zirconium-based composite ceramic materials under the same conditions, and promote the obtained ceramic material structure to be more compact. At the same time, SrCO 3 Powder and Nb 2 o 5 The cubic structure Sr formed by powder mixing and sintering x NbO 3 The stable phase can e...

Embodiment 1 to 6

[0076] It is used to illustrate the zirconium-based composite ceramic material and its preparation method of the present application, wherein the ceramic material contains a zirconia matrix, and a cubic structure Sr dispersed in the zirconia matrix 0.82 NbO 3 stable phase.

Embodiment 1

[0078] Used to illustrate the application of zirconium-based composite ceramic materials and their preparation methods

[0079] Raw materials: zirconia, the dosage is 200g; SrCO 3 Powder, the dosage is 1.5mol% of the total molar weight of zirconia; Nb 2 o 5 powder, its molar dosage is the same as that of SrCO 3 The ratio of powder molar dosage is 1:1.64; the dosage of polyethylene glycol 4000 is 0.5wt% of the weight of zirconia; the dosage of PVA is 0.5wt% of the weight of zirconia.

[0080] Preparation:

[0081] S1, first zirconia powder, SrCO 3 Powder and Nb 2 o 5 Add alcohol and ball mill the powder in a ball mill tank for 8 hours to form a premix; add binder polyethylene glycol 4000 and PVA ball mill to the premix for half an hour to form a spray slurry;

[0082] S2. Send the slurry for spraying into the spray tower. The air inlet temperature is 250°C, the outlet air temperature is 110°C, and the centrifugal speed is 15rpm, and the spray drying is carried out to for...

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Abstract

The present invention discloses a zirconium-based composite ceramic material and preparation method thereof with a shell or ornament. The ceramic material contains a zirconia matrix, and a cubic structure Sr dispersed in the zirconia matrix x NbO 3 Stable phase, the cubic structure Sr x NbO 3 0.7 ≤ x≤0.95 in the stable phase. This zirconium-based composite ceramic material is dispersed by a cubic structure Sr in a zirconia substrate x NbO 3 The stable phase can effectively improve the toughness and fall resistance of zirconium-based composite ceramic materials, making them suitable for the preparation of large-area exterior parts similar to shells or ornaments.

Description

technical field [0001] The invention relates to the field of ceramic materials and their applications, in particular to a zirconium-based composite ceramic material, a preparation method thereof, and a casing or decoration. Background technique [0002] Due to the high development of science and technology, the performance, quality and requirements of ceramic materials are getting higher and higher. Zirconia ceramics are widely used due to their better corrosion resistance, higher hardness, and higher strength than other types of ceramics. However, when making large-area appearance parts, although the toughness of existing zirconia ceramics (up to 5-6MPa·m 1 / 2 ) is higher than other types of ceramics, but still has the disadvantage of not being resistant to falling. Therefore, if you want to use zirconia ceramics to make appearance parts, you need to further improve the anti-drop performance of zirconia ceramics. [0003] At present, yttrium-stabilized zirconia powders on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622
CPCC04B35/48C04B35/622C04B2235/3213C04B2235/3251C04B2235/3246C04B2235/5445C04B2235/5436C04B2235/656C04B2235/80C04B2235/96C04B35/488C04B35/6261C04B35/62655C04B35/63416C04B35/63488C04B2235/3255C04B2235/442C04B2235/604C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/761C04B2235/762C04B35/62625C04B2235/661C04B35/64
Inventor 宫清林信平陈戈吴波
Owner BYD CO LTD