Dissimilar connection between glass and metal welding
Release time:
2022-07-28
【Summary Description】 Glass materials are widely used because of high temperature wear resistance, corrosion resistance, insulation, oxidation resistance and other characteristics, but the low ductility and poor impact toughness of glass itself limit its application in engineering. Therefore, the glass-metal composite connector, which combines the excellent properties of glass and metal, has been widely used in microelectronic packaging, batteries, instruments, solar vacuum collector tubes, composite materials and other fields, so it is of great significance to study the sealing of glass and metal. There are many sealing methods for glass and metal, among which the most studied and mature theory is matching sealing. Matching sealing is to pre-oxidize the metal before sealing to generate a layer of oxide layer with appropriate thickness on the metal surface, then put the metal and glass in a furnace for heating and holding for a certain period of time and then cool to room temperature. However, matching sealing needs to be heated in the furnace and then cooled, so the production cycle is long. However, the laser has extremely high energy, can realize rapid heating and rapid cooling in non-contact local, and can also realize the sealing of devices with complex joint shape, so it is more and more widely used in the field of sealing. The welding of glass and metal belongs to different kinds of materials, so their welding belongs to dissimilar welding. This is why we introduce dissimilar welding. In subsequent articles, we will gradually introduce the matching sealing (welding) and laser welding of glass and metal.
Glass materials are widely used because of high temperature wear resistance, corrosion resistance, insulation, oxidation resistance and other characteristics, but the low ductility and poor impact toughness of glass itself limit its application in engineering.
Therefore, the glass-metal composite connector, which combines the excellent properties of glass and metal, has been widely used in microelectronic packaging, batteries, instruments, solar vacuum collector tubes, composite materials and other fields, so it is of great significance to study the sealing of glass and metal.
There are many sealing methods for glass and metal, among which the most studied and mature theory is matching sealing. Matching sealing is to pre-oxidize the metal before sealing to generate a layer of oxide layer with appropriate thickness on the metal surface, then put the metal and glass in a furnace for heating and holding for a certain period of time and then cool to room temperature. However, matching sealing needs to be heated in the furnace and then cooled, so the production cycle is long. However, the laser has extremely high energy, can realize rapid heating and rapid cooling in non-contact local, and can also realize the sealing of devices with complex joint shape, so it is more and more widely used in the field of sealing.
The welding of glass and metal belongs to different kinds of materials, so their welding belongs to dissimilar welding. This is why we introduce dissimilar welding. In subsequent articles, we will gradually introduce the matching sealing (welding) and laser welding of glass and metal.
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