A method of connecting alon ceramics with alon powder as a raw material

A technology of powder and ceramics, which is applied in the field of preparation of transparent ceramic materials, can solve the problems that ceramic connections are not easy to implement, and achieve the effects of easy processing, improved interface bonding strength, and improved connection strength
CN109721379BActive Publication Date: 2021-11-02DALIAN MARITIME UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN MARITIME UNIVERSITY
Publication Date
2021-11-02

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Abstract

The invention relates to a method for connecting AlON ceramics by using AlON powder as a raw material, belonging to the field of transparent ceramic material preparation. A method for connecting AlON ceramics using AlON powder as a raw material. The mixed powder of the intermediate layer is evenly arranged between the AlON ceramic blocks and then sintered to realize the connection between the AlON ceramic blocks. The mixed powder is made of AlON powder Composed of sintering aid powder, the sintering conditions are: under the unidirectional pressure of 0.01MPa perpendicular to the plane to be connected, the temperature is raised to the holding temperature at a heating rate of 30°C / min, and then the holding temperature is the temperature for preparing the to-be-connected The sintering temperature of the AlON ceramic block is ±30° C., and the holding time is not longer than the sintering holding time for preparing the AlON ceramic block to be connected. The connecting piece obtained by using the method of the invention has high strength and light transmittance. The method is simple to operate and easy to realize industrial scale-up production.
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Description

technical field

[0001] The invention relates to a method for connecting AlON ceramics by using AlON powder as a raw material, belonging to the field of transparent ceramic material preparation. Background technique

[0002] Aluminum oxynitride (AlON) transparent ceramics have stable physical and chemical properties, good light transmission in the wavelength range of 0.2-6.0 μm, and good comprehensive mechanical properties. It is a very potential structure-function integration chemical ceramic materials.

[0003] The technical characteristics of AlON transparent ceramics that can be sintered without pressure make it have unique advantages in the preparation of large-size and special-shaped components. However, limited by the molding equipment, there is also a certain limit to the enlargement of the component size, and the large-size and special-shaped component blanks are easily deformed during the sintering process, so it is easy to cause cracks or even damage to the compon...

Claims

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