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A connection method between ceramic and amorphous and an amorphous alloy-ceramic composite

A technology of amorphous alloys and composites, which is applied in the field of connection between ceramics and amorphous and amorphous alloy-ceramic composites, which can solve the problems of ceramic cracking, poor adhesion between ceramics and amorphous alloys, and matching between ceramics and amorphous alloys Poor performance and other problems, to achieve the effect of increasing connection strength, improving matching, and reducing the possibility

Active Publication Date: 2017-01-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, the amorphous alloy is usually directly injected onto the ceramic surface, but this method has the following two problems: one is that the matching between the ceramic and the amorphous alloy is poor, which causes the amorphous alloy to crack the ceramic; the other is that the ceramic and the amorphous alloy are not compatible. The poor adhesion of amorphous alloys leads to the inability of the connection interface of the two materials to be bonded together, thus affecting the performance of the composite material

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  • A connection method between ceramic and amorphous and an amorphous alloy-ceramic composite

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preparation example Construction

[0019] In the present invention, there is no particular limitation on the preparation method of the ceramic pre-sintered body, which may be a method commonly used in the art. For example, the slurry containing ceramic raw material powder and binder can be successively granulated and dry pressed to obtain a green body, and then the green body can be debinding and calcined successively to obtain the ceramic calcined body .

[0020] The particle size of the ceramic raw material powder can be conventionally selected in the field. Generally, the average particle diameter of the ceramic raw material powder may be 0.5-1 μm. In the present invention, the average particle diameter refers to the volume average particle diameter, which is measured by a laser particle size analyzer.

[0021] According to the present invention, the type of the binder can be various binders commonly used in the field of ceramic molding, and its specific examples can include but are not limited to: polyvin...

Embodiment 1

[0056] (1) 100 g of 3Y zirconia powder (average particle size: 0.5 μm) was mixed with 10 g of 5% by weight PVA aqueous solution.

[0057] The obtained mixture was sent to a spray dryer for granulation, wherein the inlet temperature of the spray dryer was 150° C., and the outlet temperature was 90° C. to obtain granulated powder.

[0058] The granulated powder is dry-pressed in a press to obtain a green body. Among them, the pressure is 80MPa, and the holding time is 10s.

[0059] Raise the temperature of the green body in the muffle furnace to 600°C at a heating rate of 2°C / min, deglue at this temperature for 3 hours, then raise the temperature to 1100°C at a heating rate of 10°C / min, and pre-fire at this temperature 2h, to obtain the calcined body.

[0060] (2) Uniformly disperse 65g of 3Y zirconia powder (average particle size of 0.5 μm), 35 g of calcium oxide powder (average particle size of 5 μm) and 50 g of 1% by weight PVA aqueous solution to obtain interface slurry. ...

Embodiment 2

[0070] (1) 100 g of 3Y zirconia powder (average particle size: 0.5 μm) was mixed with 10 g of 5% by weight PVA aqueous solution.

[0071] The obtained mixture was sent to a spray dryer for granulation, wherein the inlet temperature of the spray dryer was 120° C., and the outlet temperature was 90° C. to obtain granulated powder.

[0072] The granulated powder is dry-pressed in a press to obtain a green body. Among them, the pressure is 80MPa, and the holding time is 10s.

[0073] Heat the green body in the muffle furnace at a heating rate of 3°C / min to 600°C, deglue at this temperature for 3 hours, then raise the temperature at a heating rate of 15°C / min to 1100°C, and pre-fire at this temperature 2h, to obtain the calcined body.

[0074] (2) Uniformly disperse 70g of 3Y zirconia powder (volume average particle size of 0.5 μm), 35 g of silicon carbide powder (average particle size of 1 μm) and 50 g of 1% by weight PVA aqueous solution to obtain interface slurry.

[0075]App...

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Abstract

The invention provides a method for connecting ceramic and an amorphous alloy and an amorphous alloy-ceramic complex. The method comprises the following steps: (1) forming a slurry layer on at least one surface of a prefired ceramic body by using slurry containing ceramic powder and doping powder and sintering to obtain a cofired body which has a ceramic layer formed by the prefixed ceramic body and a transitional layer formed by the slurry layer; (2) etching the transitional layer with an etching agent so as to remove at least a part of sinter formed by the doping powder out of the transitional layer, thus obtaining a porous ceramic substrate; and (3) feeding the amorphous alloy into the porous ceramic substrate to form a connecting layer, forming an amorphous alloy layer on the surface of the connecting layer and finally cooling. The amorphous alloy-ceramic complex, prepared by using the method disclosed by the invention, has the advantages that the matching between the amorphous alloy and ceramic is improved greatly, the connecting strength of the ceramic layer and the amorphous alloy layer is enhanced, and the possibility of tension fracture of ceramic, caused by metal, can be reduced.

Description

technical field [0001] The invention relates to a connection method of ceramics and amorphous and an amorphous alloy-ceramic composite body. Background technique [0002] With the development of science and technology, fundamental changes have taken place in the composition, performance, manufacturing process and application fields of ceramics, from traditional domestic ceramics to functional ceramics with special properties and high-performance engineering ceramics, but due to its The characteristics of chemical bonds have three inherent shortcomings of high brittleness, scattered strength and difficult processing. These shortcomings lead to poor resistance to cold and heat shocks, and it is difficult to make components with large sizes and complex shapes, which also limits its application range. [0003] Amorphous alloy materials are also called metallic glasses. Due to the unique arrangement structure of atoms that make up the alloy, they have excellent physical and chemi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B37/02
Inventor 徐述荣席建飞
Owner BYD CO LTD