Oxynitride glass and production method thereof

A technology of oxynitride glass and production method, which is applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of unfavorable large-scale testing and production, high melting temperature, high price, etc., and achieve low temperature viscosity, The effect of reducing the melting temperature and making the preparation process safe

Inactive Publication Date: 2019-01-18
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the corundum crucible material, the price of the above-mentioned crucible material is relatively high, which is not conducive to large-scale testing and production; on the other hand, the preparation of oxynitride glass requires a very high melting temperature, and the melting temperature must reach a certain level during the melting process. To ensure the smooth progress of melting, clarification and homogenization of the melt, but also to avoid the decomposition reaction during the glass melting process caused by excessive temperature, so that the loss of N, Si, Ca and other elements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This example provides a method for preparing oxynitride glass with a corundum crucible, comprising the following steps:

[0024] Chemical composition of oxynitride glass: SiO 2 46wt% Al 2 o 3 22.5wt% Y 2 o 3 17.6wt% CaO 11.7wt% AlN2.2wt%.

[0025] Specific steps: (1) Calculate by mass percentage, then accurately weigh and put it into a corundum mortar for grinding, mix evenly and pass through a 100-mesh sieve (2) After grinding, pour the powder into a corundum crucible, and put the corundum crucible into the atmosphere Furnace (3) closes the atmosphere furnace and rushes into nitrogen after vacuumizing, so repeat 3 times. During the melting process, the air pressure in the furnace is always maintained at 0.1-0.12Mpa, and the temperature reaches 300 degrees Celsius to pass cooling water. (4) Melting and holding at 1500°C for 2 hours and then cooling with the furnace, (5) Waiting for the furnace to drop to 650°C, holding for two hours for annealing. (6) After th...

Embodiment 2

[0027] This example provides a method for preparing oxynitride glass with a corundum crucible, comprising the following steps:

[0028] Chemical composition of oxynitride glass: SiO 2 41.4wt% Al 2 o 3 13.1 wt% Y 2 o 3 15.9 wt% CaO 10.5 wt% AlN 2.0 wt% ZnO 17.1 wt%.

[0029] Specific steps: (1) Calculate by mass percentage, then accurately weigh and put it into a corundum mortar for grinding, mix evenly and pass through a 100-mesh sieve (2) After grinding, pour the powder into a corundum crucible, and put the corundum crucible into the atmosphere Furnace (3) closes the atmosphere furnace and rushes into nitrogen after vacuumizing, so repeat 3 times. During the melting process, the air pressure in the furnace is always maintained at 0.1-0.12Mpa, and the temperature reaches 300 degrees Celsius to pass cooling water. (4) Melting and holding at 1480°C for 2 hours and then cooling with the furnace, (5) Waiting for the furnace to drop to 630°C, holding for 2 hours for anneal...

Embodiment 3

[0031] This example provides a method for preparing oxynitride glass with a corundum crucible, comprising the following steps:

[0032] Chemical composition of oxynitride glass: SiO 2 41.6wt%Al 2 o 3 10.8wt%Y 2 o 3 15.9 wt% CaO 10.6 wt% AlN 3.9 wt% ZnO 17.2 wt%.

[0033] Specific steps: (1) Calculate by mass percentage, then accurately weigh and put it into a corundum mortar for grinding, mix evenly and pass through a 100-mesh sieve (2) After grinding, pour the powder into a corundum crucible, and put the corundum crucible into the atmosphere Furnace (3) closes the atmosphere furnace and rushes into nitrogen after vacuumizing, so repeat 3 times. During the melting process, the air pressure in the furnace is always maintained at 0.1-0.12Mpa, and the temperature reaches 300 degrees Celsius to pass cooling water. (4) Melting and holding at 1480°C for 2 hours and then cooling with the furnace, (5) Waiting for the furnace to drop to 630°C, holding for two hours for anneali...

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PUM

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Abstract

The invention provides oxynitride glass and a production method thereof, wherein the oxynitride glass is prepared from chemical composition by mass percent: 40-50% of SiO2, 10-25% of Al2O3, 10-20% ofY2O3, 10-15% of CaO, 1-8% of AlN, less than or equal to 20% of ZnO, and less than or equal to 1% of unavoidable impurities. By adopting the technical scheme of the invention, a corundum crucible is used in melting process, and cost is lower than the cost of a molybdenum crucible, a boron nitride crucible, a graphite crucible, a tungsten crucible, etc., and the use is more convenient and faster than partial metal crucibles; the oxynitride glass can be prepared at a lower temperature (1,450-1,550 DEG C), which reduces occurrence of decomposition reactions, and provides safer preparation process.

Description

technical field [0001] The invention relates to the technical field of glass manufacturing, in particular to an oxynitride glass and a production method of the oxynitride glass. Background technique [0002] Due to its superior mechanical properties, rheological properties and optical properties, oxynitride glass has been widely studied at home and abroad. However, due to the very harsh conditions in the melting process, the difficulty of oxynitride glass melting is increased. The conditions of the oxynitride glass melting process are very harsh. In the prior art, the melting temperature of oxynitride glass is in the range of 1550°C-1850°C. On the one hand, for the crucible selected during the melting process, It is necessary to ensure that it does not react with the molten raw materials, and that the crucible will not soften at a melting temperature of 1500 ° C or above. Usually, the crucibles used for melting oxynitride glass are molybdenum crucibles, boron nitride crucib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/11C03B5/16
CPCC03B5/16C03C3/111
Inventor 王觅堂李梅刘玉成张晓伟胡艳宏柳召刚
Owner INNER MONGOLIA UNIV OF SCI & TECH
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