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Ce-containing low-temperature sealing glass as well as preparation and application method of Ce-containing low-temperature sealing glass

A sealing glass, low temperature technology, applied in the field of low temperature precision packaging glass, can solve the problems of difficult to guarantee the stability of the refractive index of the glass, easy to change the valence state, difficult to ensure the stability of the sealing glass, etc., and achieve low price and stable process. Effect

Active Publication Date: 2017-03-15
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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  • Ce-containing low-temperature sealing glass as well as preparation and application method of Ce-containing low-temperature sealing glass
  • Ce-containing low-temperature sealing glass as well as preparation and application method of Ce-containing low-temperature sealing glass
  • Ce-containing low-temperature sealing glass as well as preparation and application method of Ce-containing low-temperature sealing glass

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Example 1: Preparation and sealing of materials

[0032] According to the composition ratio of each component of Example 1 in Table 1, weigh the corresponding analytically pure raw materials (B 2 O 3 , Bi 2 O 3 , ZnO, Ce(NO 3 ) 3 ), use a planetary ball mill to 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, and heat it to 1000°C at 3°C / min 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) into a slurry, which is uniformly dispersed in a ball mill; cast molding, natural Dry, then cut into the embryo body of the desired shape; place the embryo body on the part to be sealed, heat up in an electric furnace at a rate of 2°C / mi...

Embodiment 2

[0033] Example 2: Preparation and sealing of materials

[0034] According to the composition ratio of each component in Example 2 in Table 1, weigh the corresponding analytically pure raw materials (B 2 O 3 , Bi 2 O 3 , ZnO, Ce(NO 3 ) 3 ), use a planetary ball mill to 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, and heat it to 980°C at 3°C / min 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 the glass powder with methyl cellulose, polyvinyl alcohol, n-butanol and acetone (weight ratios are 82%, 2%, 2%, 8%, 6%) to form a slurry, which is uniformly dispersed in a ball mill; Prolong the forming, dry naturally, and then cut the embryo body into the desired shape; place the embryo body on the part to be sealed, heat it up in an ...

Embodiment 3

[0035] Example 3: Preparation and sealing of materials

[0036] According to the composition ratio of each component in Example 3 in Table 1, weigh the corresponding analytically pure raw materials (B 2 O 3 , Bi 2 O 3 , ZnO, Ce(NO 3 ) 3 ), use a planetary ball mill to 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, and heat it to 960°C at 3°C / min 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 (weight ratios are 84%, 1.5%, 0.5%, 9%, 5%) into a slurry, which is uniformly dispersed by ball milling in a ball mill; casting Shape, dry naturally, and then cut the embryo body into the desired shape; place the embryo body on the part to be sealed, heat it up in an...

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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 packaging glass, and specifically 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℃), due to its good heat resistance, chemical stability, and high mechanical strength, it is widely used in electronic paste, electric vacuum and microelectronics technology, energy, aerospace, automobile and many other fields, such as solid oxide fuel In batteries (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 has a great influence on the light decay rate of the LED. At the same time, sealing glass can also be used for precision connection between glass, ceramics, metals, and semiconductors. In view of the en...

Claims

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Application Information

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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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