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A kind of CE-containing low-temperature sealing glass and its preparation and use method

A technology of sealing glass and low temperature, which is applied in the field of low temperature precision packaging glass, which can solve the problems of difficulty in guaranteeing the stability of glass refractive index, prone to valence changes, and difficulty in ensuring the stability of sealing glass, etc., achieving stable process and low price Effect

Active Publication Date: 2019-03-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a recent study by our research group found that the Bi element in the glass is prone to valence changes during the heating process (Bi +3 → Bi +5 ), it is difficult to ensure the stability of the sealing glass, which makes it difficult to guarantee the stability of the refractive index of the glass

Method used

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  • A kind of CE-containing low-temperature sealing glass and its preparation and use method
  • A kind of CE-containing low-temperature sealing glass and its preparation and use method
  • A kind of CE-containing low-temperature sealing glass and its preparation and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: Preparation and sealing of materials

[0032] According to the proportioning of each component of the embodiment 1 of table 1, take corresponding analytically pure raw material respectively (B 2 o 3 、 Bi 2 o 3 , ZnO, Ce(NO 3 ) 3 ), 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 1000°C at 3°C / min, and keep it warm for 1 hour; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of glass melt; grind and pass through a 100-mesh sieve to obtain glass powder. Mix glass 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, then cut into the embryo body of the desired shape; place the embryo body at the site to be sealed, heat up in an electric furnace at...

Embodiment 2

[0033] Embodiment 2: Preparation and sealing of materials

[0034] According to the proportioning of each component of Table 1 Example 2, respectively take corresponding analytically pure raw materials (B 2 o 3 、 Bi 2 o 3 , ZnO, Ce(NO 3 ) 3), and mixed evenly with a planetary ball mill for 24 hours; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 980°C at 3°C / min, and keep it warm for 1 hour; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of glass melt; grind and pass through a 100-mesh sieve to obtain glass powder. Mix glass powder with methylcellulose, polyvinyl alcohol, n-butanol and acetone (82%, 2%, 2%, 8%, 6% by weight) to form a slurry, and disperse evenly in a ball mill; Stretching, drying naturally, and then cutting into the embryo body of the desired shape; place the embryo body at the part to be sealed, raise the temperature...

Embodiment 3

[0035] Embodiment 3: Preparation and sealing of materials

[0036] According to the proportioning of each component of Table 1 Example 3, respectively take corresponding analytically pure raw materials (B 2 o 3 、 Bi 2 o 3 , ZnO, Ce(NO 3 ) 3 ), 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 960°C at 3°C / min, and keep it warm for 1 hour; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of glass melt; grind and pass through a 100-mesh sieve to obtain glass powder. Mix glass powder with epoxy resin, polyacrylamide, isopropanol and toluene (84%, 1.5%, 0.5%, 9%, 5% by weight) to form a slurry, and disperse evenly in a ball mill; casting Forming, drying naturally, and then cutting into the embryo body of the desired shape; place the embryo body on the part to be sealed, heat up at a rate of...

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Abstract

The invention discloses Ce-containing low-temperature sealing glass as well as preparation and application method of the Ce-containing low-temperature sealing glass. The Ce-containing low-temperature sealing glass consists of the following raw materials: B2O3, Bi2O3, ZnO and Ce(NO3)3 in a molar ratio of (10-50):(20-40):(5-30):(0-30). Through the coordination between high-concentration Bi2O3 and B2O3, the softening temperature of glass is lowered, so that low-temperature sealing is realized; Ce<3+> in a glass network prepared by melting quenching is transformed into Ce<4+>, the transformation of Bi<3+> in glass into Bi<5+> is prevented, and the refractive index of glass is stabilized; and Ce not only can further lower the softening temperature of the sealing glass, but also can adjust the expansion factor of the glass so as to remarkably improve the sealing property of the sealing glass. Moreover, Ce remarkably reduces the surface tension of the glass, improves the interface bonding property between the sealing glass and an alloy connector and is applicable to the field of photoelectric materials and other low-temperature precise sealing. According to the invention, the preparation raw materials are simple and easily available, the cost is low, the technology is simple and feasible, and the prepared low-temperature sealing glass has good performance and stable refractive index and meets the conditions of practical utilization and industrialization.

Description

technical field [0001] The invention belongs to the field of low-temperature precision sealing glass, and in particular relates to a low-temperature sealing glass containing Ce and a preparation and use method thereof. Background technique [0002] Low-temperature sealing glass (melting temperature and sealing temperature <600°C), due to its good heat resistance and chemical stability, high mechanical strength, is widely used in electronic paste, electric vacuum and microelectronics technology, energy, aerospace, In many fields such as automobiles, such as in solid oxide fuel cells (SOFC), the performance of the sealing material directly leads to the actual performance of the battery; in the application of optoelectronic materials, the stability of the sealing glass also affects the LED The light decay rate has a great influence. At the same time, sealing glass can also be used for precision connection between glass, ceramics, metal, and semiconductors. Aiming at the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24
CPCC03C8/24
Inventor 张腾林城苏鸿斌林德伟
Owner FUZHOU UNIV
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