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A connection method for rapid in-situ formation of homogeneous phase alumina ceramics in an atmospheric environment

A technology of alumina ceramics and connection methods, applied in welding equipment, metal processing equipment, manufacturing tools, etc., to achieve the effects of reducing production costs, improving connection efficiency, and consuming less energy

Active Publication Date: 2016-01-13
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can significantly reduce the joint formation temperature and simplify the joining process, the shortcoming of this method is that in order to effectively overcome the difference in physical properties between the materials to be joined, most of the joints must be obtained in a long-term vacuum environment.

Method used

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  • A connection method for rapid in-situ formation of homogeneous phase alumina ceramics in an atmospheric environment
  • A connection method for rapid in-situ formation of homogeneous phase alumina ceramics in an atmospheric environment
  • A connection method for rapid in-situ formation of homogeneous phase alumina ceramics in an atmospheric environment

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Experimental program
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Effect test

Embodiment 1

[0041] Embodiment one: see attached figure 1 , 2 , 3, a connection method for rapid in-situ generation of homogeneous or nearly homogeneous alumina ceramics in an atmospheric environment, the connection method includes the following steps:

[0042] 1. Surface treatment of the materials to be connected: mechanically polish the butt joint surfaces of base metal 1 and base material 2 to ensure surface cleanliness and roughness, and use ultrasonic cleaning for the middle layer 3 for 1 to 5 minutes;

[0043] II. The base material 1, the base material 2 2 and the intermediate layer 3 are assembled in a "sandwich" laminated structure to form a connected sample structure;

[0044] III. Applying a pre-pressure relative to the connection interface on the base material 2, the pre-pressure is 0.5-3 MPa, and the pre-pressure is uniformly applied to avoid local concentration;

[0045] IV. Use the high-frequency electromagnetic induction heating coil 6 to locally and rapidly heat the conne...

Embodiment 2

[0059] Embodiment two: see attached figure 2 As shown, a connection method for rapid in-situ generation of homogeneous or near-homogeneous alumina ceramics in an atmospheric environment, the connection method includes the following steps:

[0060] 1. Surface treatment of the materials to be connected: Grinding the butt joint surfaces of base material 1 and base material 2 to ensure a certain surface cleanliness and roughness, and the middle layer 3 is ultrasonically cleaned for 1 to 5 minutes;

[0061] II. The base material 1, the base material 2 2 and the intermediate layer 3 are assembled in a "sandwich" laminated structure to form a connected sample structure;

[0062] III. Applying a pre-pressure relative to the connection interface on the base material 2, the pre-pressure is 0.5-3 MPa, and the pre-pressure is uniformly applied to avoid local concentration;

[0063] IV. Use the high-frequency electromagnetic induction heating coil 6 to locally and rapidly heat the connec...

Embodiment 3

[0077] Embodiment three: see attached image 3 As shown, a connection method for rapid in-situ generation of homogeneous or near-homogeneous alumina ceramics in an atmospheric environment, the connection method includes the following steps:

[0078] 1. Necessary surface treatment for the materials to be connected: polish base material 1 and base material 2 to ensure surface cleanliness and roughness, and use ultrasonic cleaning for the middle layer 3 for 1 to 5 minutes;

[0079] II. The base material 1, the base material 2 2 and the intermediate layer 3 are assembled in a "sandwich" laminated structure to form a connected sample structure;

[0080] III. Applying a pre-pressure relative to the connection interface on the base material 2, the pre-pressure is 0.5-3 MPa, and the pre-pressure is uniformly applied to avoid local concentration;

[0081] IV. Use the high-frequency electromagnetic induction heating coil 6 to locally and rapidly heat the connecting part of the base mat...

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Abstract

The invention provides a connection method of rapid in-situ forming same quantity and phase aluminum oxide ceramics in an atmospheric environment, and belongs to the ceramics-ceramics or ceramics-metal connecting field. Rapid wetting of a joint can be achieved in the atmospheric environment, joint internal stress of a composite phase structure is greatly alleviated, and meanwhile the joint is strengthened and use temperature is improved. Compared with a connection method of other ceramics, the connection method of the rapid in-situ forming same quantity and phase aluminum oxide ceramics in the atmospheric environment can obtain excellent performances of high sealing performance (joint jointing rate is larger than or equal to 95%), high intensity (70-90 MPa) and wide service temperature range, and is especially suitable for rapid, efficient and high-strength connection of structures of aluminum oxide ceramics- aluminum oxide ceramics and aluminum oxide ceramics-metal(aluminum, copper, stainless steel, corresponding alloy and the like) which need long time vacuum pressure withstand, high service temperature, high intensity and high corrosion resistance performance.

Description

technical field [0001] The invention relates to a connection method for rapid in-situ generation of homogeneous or near-homogeneous phase alumina ceramics in an atmospheric environment, and is especially suitable for applications that require long-term vacuum pressure-resistant sealing, high working temperature, high strength and high corrosion resistance. Fast, efficient and high-strength connections between alumina ceramics-alumina ceramics and alumina ceramics-metal (aluminum, copper, stainless steel and their respective alloys) structures. Background technique [0002] In recent years, ceramics are widely used in all aspects of production and life because of their high hardness, high strength, low density, low thermal expansion coefficient, good thermal conductivity, and chemical corrosion resistance. For example, in the field of biomedicine, ceramics are mainly used in dentistry, biosensors, and embedded microsystems based on their good high temperature resistance and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/10B23K20/24B23K20/22
Inventor 计红军李明雨程晓
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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