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Rare-earth doped leadless and low-melting point sealing glass and its preparation method

A sealing glass, low melting point technology, used in the sealing and sealing of electrical devices, the formulation and preparation of rare earth-doped lead-free low melting point sealing glass, electronics, and stainless steel fields, which can solve the problems of low stability and achieve flowability. Good performance, simple process, and the effect of expanding the glass-forming range

Inactive Publication Date: 2009-06-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is: aiming at the requirement of lead-free low melting point sealing glass and the shortcoming of low stability of the existing low melting point sealing glass, Provide a formula and preparation method of rare earth-doped lead-free low-melting sealing glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] First. According to the formula given in Table 1, batching is carried out, and the numerical values ​​of various raw material oxides are selected in the content ranges of each oxide given in Table 1. The sealing glass raw materials in Example 1 are calculated in parts by weight, and 1 part can be 1 gram, 10 grams, 100 grams, 1000 grams, etc., and the list of ingredients is obtained, see Attached Table 2.

[0038] Second. According to the ingredient list and the corresponding measurement unit, powdered bismuth oxide, aluminum oxide, boric acid, silicon dioxide, copper oxide, cobalt oxide, phosphorus pentoxide, zinc oxide, barium carbonate, cerium oxide, niobium oxide, etc. Raw materials are weighed. Grind and mix them together in a grinder.

[0039] 3. After putting the weighed oxides into the grinder, turn on the grinder to mix and grind for 0.5-1 hour until the oxides are mixed evenly. Put the mixed ingredients into a platinum crucible.

[0040] Fourth. Put the plat...

example 2

[0044] The first. carry out batching according to the formula that table 1 provides, choose the numerical value of various raw material oxides in each oxide content range that table 1 provides, the sealing glass raw material in the example two is by weight, 1 part can be It is 1 gram, 10 gram, 100 gram, 1000 gram, etc., get the ingredient list, see attached table 2.

[0045] Second. According to the ingredient list and the corresponding measurement unit, powdered bismuth oxide, aluminum oxide, boric acid, silicon dioxide, copper oxide, cobalt oxide, zinc oxide, barium carbonate, cerium oxide, yttrium oxide, lanthanum oxide, europium oxide, Niobium oxide and the like are used as raw materials for weighing. Grind and mix them together in a grinder.

[0046] Third. The third step is the same as example one.

[0047] Fourth. Put the platinum crucible with the batch material into the resistance furnace for heating. The process of gradually rising from room temperature to 1150°C ...

example 3

[0051] First. According to the formula given in Table 1, batching is carried out, and the numerical values ​​of various raw material oxides are selected in the content ranges of each oxide given in Table 1. The sealing glass raw materials in Example 3 are calculated in parts by weight, and 1 part can be 1 gram, 10 grams, 100 grams, 1000 grams, etc., and the list of ingredients is obtained, see Attached Table 2.

[0052] Second. According to the ingredient list and the corresponding measurement unit, use powdered bismuth oxide, aluminum oxide, boric acid, silicon dioxide, copper oxide, cobalt oxide, phosphorus pentoxide, zinc oxide, barium carbonate, cerium oxide, etc. as raw materials for weighing quantity. Grind and mix them together in a grinder.

[0053] Third. The third step is the same as example one.

[0054] Fourth. Put the platinum crucible with the batch material into the resistance furnace for heating. The process of gradually rising from room temperature to 1100°...

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Abstract

The invention relates to a method for preparing rare earth doped lead-free sealing glass with low melting point, which comprises the following steps: based on raw materials adopted by a Bi2O3-ZnO-B2O3 glass system, adding proper amount of rare earth oxide into the raw materials, and mixing, melting, annealing, grinding and sieving the mixture to obtain the rare earth doped lead-free sealing glass with the low melting point. The sealing glass comprises the following main components by weight portion: 65.22 to 85.22 portions of bismuth oxide, 4.63 to 11.78 portions of boric acid, 5.76 to 10.76 portions of zinc oxide, 0.80 to 2.80 portions of copper oxide, 0.42 to 2.42 portions of cobalt oxide, 3.32 to 8.47 portions of barium carbonate, 0.4 to 1.8 portions of aluminum oxide, and 0.1 to 6.0 portions of rare earth oxide. The method solves the problems that the sealing glass with the low melting point has low sealing temperature, high sealing strength, stable glass structure and the like under lead-free conditions, and has the advantages of simple process, practicability and reliability; and the prepared rare earth doped lead-free sealing glass with the low melting point is particularly suitable for sealing and closing of stainless steel materials, electrons and electric appliances.

Description

technical field [0001] The invention relates to a glass material, in particular to the formulation and preparation of a rare earth-doped lead-free low-melting sealing glass. The material is especially suitable for sealing and sealing stainless steel, electronic and electrical devices. Background technique [0002] Low melting point sealing glass refers to the interlayer glass that seals glass, ceramics, metal and composite materials, etc., and refers to the sealing glass whose melting point is significantly lower than that of ordinary glass. With the development of modern science and technology, especially the rapid progress in vacuum electronics technology, microelectronics technology, laser and infrared technology, electric light source and high-energy physics and aerospace industry, energy, automobile industry, chemical industry, industrial testing and other fields, the device's The miniaturization and precision of structural components are constantly improving, the types...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/24
Inventor 何峰程金树谢俊郑伟宏陆平
Owner WUHAN UNIV OF TECH
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