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Titanium and titanium alloy-glass material for Kovar sealing and its preparation method and application

A glass material and sealing glass technology, applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve problems such as easy high temperature oxidation, difficult sealing, poor wettability, etc.

Active Publication Date: 2022-05-20
XIAN SEAL ELECTRONICS MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are many problems in the sealing process of titanium and titanium alloy materials, such as poor wettability with glass, high-temperature phase transition, etc., so it is difficult to achieve sealing with traditional glass. There are relatively serious defects in the sealing interface. When disturbed by changes in the external environment, a large number of microcracks will be generated at the defects of the sealing interface, resulting in problems such as poor air tightness and poor insulation resistance.
At the same time, titanium and titanium alloys are easily oxidized at high temperatures, and different types of oxide layers are formed at different temperatures, which increases the difficulty of subsequent surface treatment

Method used

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  • Titanium and titanium alloy-glass material for Kovar sealing and its preparation method and application
  • Titanium and titanium alloy-glass material for Kovar sealing and its preparation method and application
  • Titanium and titanium alloy-glass material for Kovar sealing and its preparation method and application

Examples

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Effect test

preparation example Construction

[0030] A method for preparing titanium and titanium alloy-Kovar sealing glass powder, comprising the following steps:

[0031] Step 1), by mass percentage, get following raw material: SiO 2 : 15-30%, B 2 o 3 : 25~45%, Bi 2 o 3 : 2~15%, Al 2 o 3 : 10-20%, Na 2 O: 0.5~7.5%, K 2 O: 0.5-7.5%, MgO: 0.5-10%, CaO: 0.5-10%, SrO: 0.5-10%, BaO: 0.1-2.5%, Sb 2 o 3 : 0.5~1.5%, CuO: 0.1~1.5%;

[0032] Step 2), after mixing all the raw materials evenly, heat and melt in a high temperature furnace until the glass liquid is clarified; quenching the glass liquid with deionized water quenching method to obtain glass fragments;

[0033] Specifically, the raw materials are placed in a planetary ball mill for ball milling, so that the ingredients are mixed evenly; the grinding speed is 280-320r / min, and the grinding time is 30-60min; the mixed materials are placed in a crucible, and the crucible is placed in In the high-temperature lifting furnace, the glass liquid is obtained after heati...

Embodiment 1

[0053] A preparation method of titanium and titanium alloy and Kovar alloy sealing glass material for thermal battery, specifically comprising the following steps:

[0054] Step 1), select chemical composition batching by following weight percentage:

[0055] SiO 2 : 20%, B 2 o 3 : 35.5%, Bi 2 o 3 : 6%, Al 2 o 3 : 11%, Na 2 O: 4%, K 2 O: 4%, MgO: 3%, CaO: 4%, SrO: 10%, BaO: 1.9%, Sb 2 o 3 : 0.5%, CuO: 0.1%;

[0056] Step 2) Put the raw materials of the above-mentioned components in a ball mill for ball milling, so that the ingredients are mixed evenly, the grinding speed is 300r / min, and the time is 30min;

[0057] Step 3) Put the ball-milled and mixed materials in step 2) in a corundum crucible or a platinum crucible, place the crucible in a high-temperature lifting furnace, and raise the temperature to 700°C at a heating rate of 10°C / min in an air atmosphere and keep it warm for 40min. Then increase the temperature at a rate of 10°C / min to 1350°C and keep it warm...

Embodiment 2

[0078] Embodiment 2 The specific sealing method process: the metal shell 1 is pre-oxidized at 500°C for 20 minutes, the metal conductor stem 3 is pre-oxidized at 500°C for 15 minutes, and then the metal shell 1 and the glass body 2 set in the through hole of the metal shell are sealed. And the metal conductor core column 3 is loaded into the sintering mold according to the corresponding order, put the semi-finished components together with the sintering mold into the high-temperature sintering furnace, pass in nitrogen as a protective gas, heat up to 750 ° C according to a certain program, and keep it for 30 minutes for sintering to soften Or a good tight seal is formed between the glass body in the molten state, the metal conductor core post and the metal shell, and annealed for 15 minutes when the temperature is lowered to 500 ° C, and then lowered to room temperature, so as to obtain a titanium-glass seal with excellent performance for aerospace connectors. connect component...

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Abstract

The invention discloses a glass material for titanium and titanium alloy-kovar sealing and its preparation method and application. Silicon dioxide and diboron trioxide are used as the skeleton structure, and as the network former of glass, diboron trioxide is added to improve The wettability and interface stability of glass and titanium and its alloys, controlling the ratio of silicon dioxide and boron trioxide to improve the stability of the glass system, using a small amount of alkali metal elements to reduce the melting temperature and increase the expansion coefficient; add MgO, CaO , SrO and BaO alkaline earth metal oxides, the cation Mg 2+ , Ca 2+ 、Sr 2+ 、Ba 2+ Fill in the network gap and produce mixed alkali effect and suppression effect, which hinders the activity of alkali metal ions and improves the insulating performance of glass; adding Al 2 o 3 As a network intermediate, it makes the glass space network structure more compact and improves the chemical stability of the glass; adding ZnO, TiO 2 Oxide to improve the chemical stability and electrical insulation of the glass, in addition, by adding a small amount of CuO to improve the bonding strength and thermal shock resistance of the interface.

Description

technical field [0001] The invention belongs to the field of medium-temperature lead-free sealing glass, and in particular relates to a titanium and titanium alloy-Kovar sealing glass material and a preparation method and application thereof. Background technique [0002] A sensor is a device or device that can sense a specified measured object and convert it into a usable signal according to certain rules (mathematical function rules). It has the characteristics of miniaturization, digitization, intelligence, multi-function, systematization, and networking. It is used in industrial production, space development, marine exploration, environmental protection, resource investigation, medical diagnosis, bioengineering, and even cultural relics protection, etc., which promotes the transformation and upgrading of traditional industries, and may also establish new industries, thus becoming a new type of industry in the 21st century. new economic growth point. Sensors are mainly c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24C03C6/04C03B5/16C03C27/00
CPCC03C8/24C03C1/00C03B5/16C03C27/00
Inventor 郝小军华斯嘉冯庆贾波杨文波刘卫红
Owner XIAN SEAL ELECTRONICS MATERIAL TECH CO LTD
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