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Welding flux, preparation method and application thereof, welding method and ceramic component

A welding method and solder technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of poor processing performance, low impact toughness, limiting the production and application of ceramic components and complex components, etc. Achieving good wetting effect and good fluidity

Active Publication Date: 2021-12-03
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002]Al2O3ceramic has attracted extensive attention because of its excellent comprehensive mechanical and physical properties, such as good The high temperature resistance, oxidation resistance and corrosion resistance of Al2O3 ceramics greatly limits the production of large Al2O3 ceramic components and complex components and application
[0003]Currently, there is no efficient way to achieve Al2O3ceramic components (especially large and complex Shaped Al2O3ceramic components) with their own reliable connection

Method used

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  • Welding flux, preparation method and application thereof, welding method and ceramic component
  • Welding flux, preparation method and application thereof, welding method and ceramic component

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preparation example Construction

[0060] Correspondingly, the present application also provides a preparation method of the above-mentioned solder, which includes the following steps: mixing the main components according to the proportion to obtain powdered solder.

[0061] Preferably, a three-dimensional mixer is used to mix the above main components. For reference, the mixing time may be 1.5-3h, such as 1.5h, 2h, 2.5h or 3h, etc., preferably 2h.

[0062] It is worth noting that the three-dimensional mixer used in this application is based on the targeted setting of the main components used. Among the main components used in this application, some components have a light specific gravity, and some components have a heavy specific gravity. When mixing, there will be heavy sinking and light The phenomenon of floating, the use of ordinary stirring methods (even if it is accompanied by stirring during the mixing process) will lead to uneven mixing of materials and stratification; and the three-dimensional mixer u...

Embodiment 1

[0097] This embodiment provides a method for Al 2 o 3 Solder for ceramic connections, the composition of which is: 10wt% SiO 2 Powder, 45wt% B 2 o 3 powder, 20wt% Al 2 o 3 powder and 25wt% MgO powder.

[0098] Among them, SiO 2 The purity of the powder is analytically pure, and its properties are colorless fine crystalline particles or white powder; B 2 o 3 Powder purity is analytically pure; Al 2 o 3 The purity of the powder is analytically pure, and its properties are white powder; the purity of MgO powder is analytically pure, and its properties are white fine powder.

[0099] The preparation method of above-mentioned solder and utilize above-mentioned solder to realize Al 2 o 3 The method of ceramic joining includes the following steps:

[0100] 1) Weigh SiO by mass percentage 2 Powder, B 2 o 3 Powder, Al 2 o 3 Powder and MgO powder were mixed for 2 hours using a three-dimensional mixer to prepare powdered solder;

[0101] 2) Mix powder solder with deion...

Embodiment 2

[0108] This embodiment is roughly the same as Embodiment 1, except that the temperature is raised to 1175° C. in step 6).

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Abstract

The invention discloses a welding flux, a preparation method and application thereof, a welding method and a ceramic component, and belongs to the technical field of ceramic welding. The main components of the welding flux comprise 5-15% of SiO2, 40-50% of B2O3, 15-25% of Al2O3 and 15-30% of MgO. The welding flux containing the components can form microcrystalline glass containing MgAl2O4 and Al18B4O33 at high temperature, the connection reliability degree of a welding joint can be enhanced, good wetting with an Al2O3 ceramic base material can be achieved, the thermal expansion coefficient difference between the base material and the welding flux is reduced, the residual stress of the joint is reduced, and reliable connection between Al2O3 ceramic matrixes is realized. The corresponding welding method is safe in process, environmentally friendly, reliable and easy and convenient to operate, has important application value and is suitable for being widely popularized and used.

Description

technical field [0001] The invention relates to the technical field of ceramic welding, in particular to a solder, its preparation method and application, a welding method and a ceramic component. Background technique [0002] Al 2 o 3 Ceramics have attracted extensive attention because of their excellent comprehensive mechanical and physical properties, such as good high temperature resistance, oxidation resistance, corrosion resistance, etc., and have received more and more attention in the fields of microelectronics, aerospace, and chemical industry. The inherent high brittleness and low impact toughness lead to Al 2 o 3 The processing performance of ceramics is not good, which greatly limits the large Al 2 o 3 Production and application of ceramic components and complex components. [0003] Currently, there is no effective method to achieve Al 2 o 3 Ceramic parts (especially large and complex shapes of Al 2 o 3 ceramic parts) and its own reliable connection. ...

Claims

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Application Information

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IPC IPC(8): B23K35/36B23K35/40
CPCB23K35/36B23K35/40
Inventor 郑开宏王娟何晨杰
Owner GUANGDONG INST OF NEW MATERIALS
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