Metal pretreatment method for metal-glass sealing technology

A pre-treatment and glass sealing technology, which is applied in the field of metal-glass sealing technology, can solve the problems of poor consistency of oxidation mold thickness of oxide components, failure of salt spray resistance test to meet technical requirements, weak bonding force between leads and glass, etc. It achieves the effects of strong resistance to salt spray corrosion, easy operation of the electroplating process, and good product consistency

Inactive Publication Date: 2011-12-14
贵州振华群英电器有限公司(国营第八九一厂)
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The biggest problem with these two oxidation methods is that the process is complicated and difficult to control, and the investment in the oxidation furnace is large, the consistency of the oxide composition and the thickness of the oxidation mold is poor, and the bonding force between the lead wire and the glass of the sintered glass sealing component is poor. Weaker, the product quality of the sintered glass sealing component after electroplating cannot be guaranteed, and the salt spray test does not meet the technical requirements

Method used

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  • Metal pretreatment method for metal-glass sealing technology
  • Metal pretreatment method for metal-glass sealing technology

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Embodiment 1

[0013] Example 1. In the metal-glass sealing process, the metal (kovar alloy) is pre-treated by electroplating and gold plating, and the thickness of the coating is 0.1-15 μm. After the electroplating treatment, the electroplated Kovar gold leads and the bottom plate are mounted together with the glass blank according to the conventional technology, and then high-temperature glass sintering is carried out to realize glass fusion sealing. Adopt the glass sealing technological process behind the present invention to see figure 1 shown.

Embodiment 2

[0014] Example 2. In the metal-glass sealing process, the pre-treatment of the metal (kovar alloy) is electroplating and silver plating, and the thickness of the coating is 0.1-15 μm. After the electroplating treatment, the electroplated Kovar gold leads and the bottom plate are mounted together with the glass blank according to the conventional technology, and then high-temperature glass sintering is carried out to realize glass fusion sealing.

Embodiment 3

[0015] Example 3. In the metal-glass sealing process, the pre-treatment of the metal (Kovar alloy) is electroplating and copper plating, and the thickness of the coating is 0.1-15 μm. After the electroplating treatment, the electroplated Kovar gold leads and the bottom plate are mounted together with the glass blank according to the conventional technology, and then high-temperature glass sintering is carried out to realize glass fusion sealing.

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Abstract

The invention discloses a metal pre-treatment method of the metal-glass sealing technology. The method is to first conduct surface electroplating treatment on the Kovar alloy to be glass sealed, and then electroplate the Kovar gold lead wire and The bottom plate and the glass blank are mounted together, and the glass is melted and sealed at high temperature. In the present invention, the electroplating process is used to replace the traditional pre-oxidation process in the pre-treatment of the metal. The sealing parts obtained in this way are not only beautiful in appearance, but also have better air tightness, less air bubbles on the surface and inside of the glass insulator, and high bonding strength between the glass and the lead wire. And the number of bending is more, the bonding strength is higher than that of the traditional pre-oxidized sealing parts, and the product consistency is better. The components after electroplating have strong salt spray corrosion resistance, which meets the requirements of use and can be widely used in metal packaging, relays , connectors, solar vacuum heat collectors and other fields.

Description

technical field [0001] The invention relates to a metal-glass sealing technology, in particular to a metal pretreatment method of the metal-glass sealing technology. Background technique [0002] Metal and glass seals are widely used in products that need to meet vacuum airtightness requirements, such as metal packages, relays, connectors, solar vacuum heat collectors, etc. Among them, Kovar alloy and high-silicon boron hard glass are mostly used for glass matching and sealing, but glass and Kovar alloy do not infiltrate. According to the current domestic academic theory of glass sealing, metal can be achieved through the infiltration and fusion of oxide film on the surface and glass. Alloy and glass are hermetically sealed, therefore, the oxidation treatment before glass sealing is very important. In actual production, the treatment of metal parts before high-temperature sintering is currently used in China to directly oxidize metal at high temperature with air, or to pass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/48C25D3/46C25D3/38C25D3/12C25D3/22
Inventor 张瑜陈奎尹毅赵道明张红林
Owner 贵州振华群英电器有限公司(国营第八九一厂)
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