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Nickel-containing phosphate oxynitride encapsulated glass and preparation method thereof

A technology for sealing glass and oxynitride, which is applied in the field of nickel-containing phosphate oxynitride sealing glass and its preparation, can solve the problems of easily generating bubbles and limiting the application in the sealing field, and achieves stress reduction, low cost, Effect of Reducing Coefficient of Thermal Expansion Mismatch

Inactive Publication Date: 2018-05-29
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphate oxynitride glass is prone to bubbles during heating, which limits its application in the sealing field

Method used

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  • Nickel-containing phosphate oxynitride encapsulated glass and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] According to the proportioning of each component of embodiment 1 in table 1, take a certain amount of analytically pure raw material (Si 3 N 4 , MgO, Na 2 O.P 2 o 5 ), use a planetary ball mill for 24 hours to mix evenly; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 1200°C at 3°C / min, and keep it warm for 0.5 hours; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of the glass melt; grind and pass through a 100-mesh sieve to obtain a powder. Mix the powder with polyvinyl alcohol, fish oil, ethanol and toluene (80%, 2%, 1%, 10%, 7% by weight) to form a slurry, and disperse evenly in a ball mill; tape casting, natural Dry, and then cut into the embryo body of the desired shape; place the embryo body on the part that needs to be sealed, heat up at a rate of 2°C / min in an electric furnace, keep it at 300°C for 1 hour, and then heat u...

Embodiment 2

[0027] Embodiment 2: preparation of material and performance test result

[0028] According to the proportioning of each component of embodiment 1 in table 1, take a certain amount of analytically pure raw material (Si 3 N 4 , MgO, Na 2 O.P 2 o 5 ), use a planetary ball mill for 24 hours to mix evenly; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 1200°C at 3°C / min, and keep it warm for 0.5 hours; then, take out the crucible, Pour the melt into deionized water to quench, dry to obtain fragments of the glass melt; grind, pass through a 100-mesh sieve to obtain a powder, and then add Ni analytically pure powder to obtain a mixed powder. Mix the mixed powder with polyvinyl alcohol, fish oil, ethanol and toluene (the weight ratio is 80%, 2%, 1%, 10%, 7% in turn) to form a slurry, and disperse evenly in a ball mill; tape casting, Dry naturally, and then cut into the embryo body of the desired shape; pl...

Embodiment 3

[0029] Embodiment 3: preparation of material and performance test result

[0030] According to the proportioning of each component of embodiment 1 in table 1, take a certain amount of analytically pure raw material (Si 3 N 4 , MgO, Na 2 O.P 2 o 5), use a planetary ball mill for 24 hours to mix evenly; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 1200°C at 3°C / min, and keep it warm for 0.5 hours; then, take out the crucible, Pour the melt into deionized water to quench it, and dry it to obtain fragments of the glass melt; grind it and pass it through a 100-mesh sieve to obtain a powder, and then add Ni analytically pure powder to obtain a mixed powder. Mix the mixed powder with polyvinyl alcohol, fish oil, ethanol and toluene (the weight ratio is 80%, 2%, 1%, 10%, 7% in turn) to form a slurry, and disperse evenly in a ball mill; tape casting, Dry naturally, and then cut into the desired shape of t...

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Abstract

The invention discloses nickel-containing phosphate oxynitride encapsulated glass and a preparation method thereof. The nickel-containing phosphate oxynitride encapsulated glass is prepared from the following components in molar percentage: 0 to 15 percent of Si3N4, 20 to 35 percent of MeO (Me is one or several of Ca, Mg and Sr), 5 to 15 percent of M2O (M is one or several of Li, Na and K), 45 to50 percent of P2O5 and 0 to 15 percent of Ni. According to the nickel-containing phosphate oxynitride encapsulated glass and the preparation method, disclosed by the invention, through the added Si3N4, a glass network structure can be enhanced; Ni can enter the glass network structure, so that a glass network is enhanced; surface tension can also be reduced, the sintering performance of glass canbe promoted, and the density of an encapsulation material is increased; through residual NiO, a whole thermal expansion coefficient of a phosphate encapsulated material can also be regulated, mismatchwith a thermal expansion coefficient of a metal base material is reduced, the stress of an encapsulation interface is effectively reduced, and the encapsulation quality is increased; raw materials are simple and easy to obtain, the cost is low, and the conditions of functionization and industrialization are achieved.

Description

technical field [0001] The invention belongs to the field of glass sealing of metal substrates, and in particular relates to a nickel-containing phosphate nitrogen oxide sealing glass and a preparation method thereof. Background technique [0002] Solid fuel cell (SOFC) is a renewable energy electrochemical device that has attracted much attention in recent years. Its high efficiency, pollution-free, all-solid-state structure and general adaptability to a variety of fuel gases make it widely used. SOFC technology is a key technology for the transformation of the future energy structure, and has the advantage of being able to directly convert chemical energy into electrical energy efficiently and without pollution. However, large-scale stacks (>1kW) were tested at around 1000°C, which resulted in their poor durability, long start-up time, and high cost. These issues have driven intensive research to develop high-performance SOFCs from high temperature (HT) to intermediate...

Claims

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Application Information

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IPC IPC(8): C03C8/20
CPCC03C8/20
Inventor 张腾姜晓婷林芬陈孔发唐电
Owner FUZHOU UNIVERSITY
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