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High-temperature resistant Ag-Cu-O metal sealing material and use method thereof

A metal sealing, ag-cu-o technology, used in welding/cutting media/materials, metal processing equipment, welding media, etc., to ensure reliability, improve wettability, and high bonding strength.

Inactive Publication Date: 2011-11-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a silver-based anti-corrosion material that can effectively control the formation of pores for the problem of a large number of pores in the sealing interface when the Ag-Cu alloy solder is air brazed. The high-temperature metal sealing material and sealing method enable it to simultaneously seal the solid mixed conductor oxygen-permeable membrane ceramics and its supporting body stainless steel, and no pores will be generated on the brazing interface, and the brazing filler metal simultaneously acts on the oxygen-permeable membrane ceramics and its supporting body stainless steel. The support stainless steel has good wetting properties, and finally realizes the reliable sealing of the solid mixed conductor oxygen-permeable membrane ceramic and its support stainless steel

Method used

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  • High-temperature resistant Ag-Cu-O metal sealing material and use method thereof
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  • High-temperature resistant Ag-Cu-O metal sealing material and use method thereof

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Embodiment 1

[0021] Embodiment one: The preparation process of the high temperature resistant Ag-Cu-O metal sealing material in this embodiment is as follows:

[0022] According to the mass percentages of the five components a.b.c.d.e listed in Table 1, weigh a certain amount of pure Ag and pure Cu respectively, put the mixture in a graphite crucible, and place it in a vacuum induction furnace. Melting at a temperature of 1000-1150°C for 3-5 minutes to make it melt, induction stirring evenly, and then cooling to room temperature with the furnace to obtain Ag-Cu alloy material. Place the obtained Ag-Cu alloy material in an oxygen atmosphere furnace, control the weight gain at 0.2-1.1wt%, keep it at 850°C for 30h, and then cool to room temperature with the furnace to obtain the high-temperature-resistant Ag- Cu-O metal sealing material (see Table 2). Finally, the prepared high-temperature-resistant Ag-Cu-O metal sealing material is machined or vacuum-cast into a required sealing prefa...

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Abstract

The invention relates to a preparation and use method of a high-temperature resistant Ag-Cu-O metal sealing material for solid mixing conductor oxygen permeation membrane ceramic and support body stainless steel thereof. The sealing material takes Ag as a matrix; the content of Ag is 90.5-98.3 percent by weight; the contents of Cu and O are respectively controlled within 1.5-8.5 percent by weight and 0.2-1.1 percent by weight; the sealing temperature is 970-990 DEG C; and brazing sealing is carried out in an inert atmosphere (pure Ar or pure N2). The high-temperature resistant Ag-Cu-O metal sealing material disclosed by the invention is prepared by feeding the Ag-Cu alloy prepared in advance into an oxygen atmosphere furnace, controlling the weight increment to be 0.2-1.1 percent by weight and maintaining the temperature of 850 DEG C for 30h. The high-temperature resistant Ag-Cu-O metal sealing material obtained in the invention has high sealing property for the solid mixing conductor oxygen permeation membrane ceramic and the support body stainless steel thereof, has favorable chemical stability and belongs to the technical field of special ceramic welding materials.

Description

technical field [0001] The invention relates to the preparation and use method of a special solid mixed conductor oxygen-permeable membrane ceramic and its support body stainless steel high-temperature-resistant Ag-Cu-O metal sealing material, which belongs to the technical field of special ceramic welding materials. Background technique [0002] In high-temperature gas separation and membrane catalysis, dense solid mixed conductor oxygen-permeable membrane ceramics are commonly used and important inorganic membranes, which have broad application prospects in the fields of pure oxygen preparation, fuel cells, and membrane reactors. At present, the most active material for solid mixed conductor oxygen-permeable membrane ceramics at home and abroad is the single-phase mixed oxygen ion / electron conductor material with cubic perovskite phase structure, among which La-Sr-Co-Fe-O, Ba-Sr- Co-Fe-O, Ba-Co-Fe-Zr-O and other series of oxygen permeable membranes have received the most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K1/00
Inventor 侯丽娟张玉文刘蛟刘旭张齐飞丁伟中鲁雄刚
Owner SHANGHAI UNIV
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