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A kind of lead-free solder for quartz glass sealing

A technology of lead-free solder and quartz glass, applied in the direction of welding/cutting medium/material, welding equipment, welding medium, etc., can solve the problems of complex process and high equipment condition requirements, achieve simple sealing process and improve the reliability of vacuum sealing , the effect of good structural strength

Active Publication Date: 2021-12-03
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This sealing method between quartz glass and metal is complex in process and requires high equipment conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The substrate of the lead-free solder for quartz glass sealing in this embodiment is tin, and the introduced Ti and O are composed of Ti: 0.2% and O: 0.05% in atomic percent. The melting point of lead-free solder is 231.9°C. The lead-free solder is a square block with a side length of 2 mm.

Embodiment 2

[0028] The substrate of the lead-free solder for sealing quartz glass in this embodiment is tin, and the introduced Ti and O are composed of Ti: 6% and O: 5.9% in atomic percent. The melting point of lead-free solder is 231.9°C. Lead-free solder is a sheet with a thickness of 0.25mm.

Embodiment 3

[0030] The matrix of the lead-free solder for quartz glass sealing in this embodiment is tin, and the introduced Ti and O are composed of Ti: 0.5% and O: 0.05% in atomic percent. The melting point of lead-free solder is 231.9°C. Lead-free solder is a sheet with a thickness of 0.15mm.

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Abstract

The invention discloses a lead-free solder for quartz glass sealing. The matrix of the lead-free solder is tin, and the atomic percentage components of Ti and O introduced are Ti: 0.2% to 6%, O: 0.05% to 5.9%, wherein the atomic ratio of Ti and O is greater than 1, and the lead-free solder The mass percentage of impurities in is less than or equal to 0.1%. The soldering temperature range of the lead-free solder is 600℃~800℃, and the welding vacuum degree is less than or equal to 5×10 ‑3 Pa. The lead-free solder for quartz glass sealing of the present invention does not need flux during the sealing process of quartz glass, simplifies the sealing process of quartz glass, and improves the vacuum sealing reliability of quartz glass sealing. The lead-free solder can be widely used in quartz glass sealing, and can also be used in quartz glass, the softening temperature of which is not lower than 800 ℃ 2 Mutual welding of glass, titanium, and metal with titanium coating on the surface as the main component. It is especially suitable for preparing pulsed xenon lamps, which can significantly improve the service life and working reliability of the pulsed xenon lamps.

Description

technical field [0001] The invention belongs to the technical field of brazing solder, in particular to a lead-free solder for quartz glass sealing. Background technique [0002] Lead-free solder for quartz glass sealing can be widely used in fields such as electric vacuum equipment, electric light sources, solar receiver tubes, and lithium batteries. The welding area has good vacuum sealing performance and high structural strength. High-power pulsed xenon lamps are widely used as pump light sources for large lasers. In the high-power pulsed xenon lamp preparation technology, how to realize the vacuum seal between quartz glass and metal has always been a technical difficulty, because the thermal expansion coefficient of quartz glass and metal is an order of magnitude different, and there is a large sealing stress. [0003] The currently widely used sealing method between quartz glass and metal is to use several transition glasses to connect quartz glass and metal to achieve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/26
Inventor 郝万立马永波宋虎彭述明龙兴贵张伟光周晓松曹清薇王宏波符雪梅
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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