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

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

Examples

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Effect test

Example Embodiment

[0060] Accordingly, the present application also provides a process for preparing the solder, comprising the steps of: mixing a main component according to the ratio, to give the corresponding solder powder.

[0061] Preferably, the above-described three-dimensional mixer for mixing a main component. Can refer, the mixing time may be 1.5-3h, such as 1.5h, etc. 2h, 2.5h or 3h, preferably 2h.

[0062] It should be noted that the present application is based on three-dimensional hybrid instrument using a main component of the targeted set, light weight main component used herein in the section component, the weight proportion of the component part, upon mixing will sink light weight floating phenomenon, the ordinary agitation (even with stirring and mixing process) will cause uneven mixing materials, the case of delamination; and three-dimensional mixing apparatus used in mixing the present application, the material can continue during mixing stirring and tumbling, thereby effectivel...

Example Embodiment

[0096] Example 1

[0097] This embodiment provides a use of Al 2 O 3 Ceramic-connected solder, its ingredient: 10% by weight of SIO 2 Powder, 45 wt% B 2 O 3 Powder, 20 wt% of Al 2 O 3 Powder and 25 wt% MgO powder.

[0098] Among them, SIO 2 Pure purity is analyzed, the traits are colorless fine crystalline particles or white powder; B 2 O 3 Pure purity is analyzed; Al 2 O 3 The purity of powder is analyzed, the traits are white powder; the purity of MgO powder is analyzed, and the traits are white extreme fine powder.

[0099] The preparation method of the above solder and the use of the above solder 2 O 3 The method of ceramic connection includes the following steps:

[0100] 1) We can weigh SIO according to the percentage of quality 2 Powder, B 2 O 3 Powder, Al 2 O 3 Powder and MgO powder, using a three-dimensional mixture for 2 h, preparing powder solder;

[0101] 2) Mix the powder solder with deionized water, mixed with sodium silicate, until there is no visible large particle...

Example Embodiment

[0107] Example 2

[0108] The present embodiment is substantially the same as that of Example 1, and the difference is only in step 6) to 1175 ° C.

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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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