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Preparation method of YAG microcrystalline glass

A technology of yttrium aluminum garnet and glass-ceramic, which is applied in the field of preparation of yttrium aluminum garnet glass-ceramic, can solve the problems of devitrification, high cost, low transparency and the like, and achieves the effects of complex shape, low cost and good applicability

Inactive Publication Date: 2012-11-07
QINGDAO UNIV
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  • Application Information

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Problems solved by technology

Although the documented documents and patents of the existing YAG glass-ceramic preparation methods have been publicly reported, there are generally two outstanding problems in summary. One is that the melting temperature of the glass is above 1650 ° C, and an expensive platinum crucible is required for preparation; Second, the transparency is low, and when the crystallite size exceeds 60nm, it is completely devitrified

Method used

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  • Preparation method of YAG microcrystalline glass
  • Preparation method of YAG microcrystalline glass

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Embodiment

[0014] The specific implementation process of this embodiment includes three steps of glass frit mixing, glass frit melting and heat preservation treatment:

[0015] (1) Glass frit mixing: chemically pure raw materials are mixed according to the molar ratio, among which Al 2 o 3 10~20mol%; Y 2 o 3 6~14mol%; SiO 2 20~50mol%; PbO is 30~70mol%; B 2 o 3 0~3mol%, after mixing, put it into a ball mill jar, add agate balls with the same quality and uneven size as the mixture, put them on a ball mill and mill them for more than 2 hours to obtain a mixed glass frit;

[0016] (2) Glass frit melting: Press the mixed glass frit into a column under the condition of 10GPa in a hydraulic press, put it into an alumina crucible, put it into a 1600°C muffle furnace for melting, and set the electric furnace temperature to 1400°C for 1 hour 10 minutes after melting, drop to 1350°C and keep warm for 2 hours to obtain molten glass frit;

[0017] (3) Heat preservation treatment: drop the abov...

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Abstract

The invention belongs to the technical field of inorganic material preparation and relates to a preparation method for a piece of YAG (Yttrium Aluminum Garnet) microcrystalline glass. The method comprises the following steps: mixing materials to form mixed materials to be filled into a ball milling pot, then adding agate balls with equal quality but different sizes, and allowing the mixed materials to be subjected to ball milling in a ball milling machine for 2 hours so as to obtain mixed glass materials; placing the mixed glass materials in an alumina crucible after being pressed to be cylinder-shaped in an oil press, and melting the cylindric glass materials in a muffle furnace so as to obtain molten glass materials after temperature reduction; maintaining 2 hours after the temperature of the molten glass materials is reduced to 1,250 DEG C in 15 minutes, and maintaining 1-20 hours after the temperature is regulated to 1,000 DEG C; and maintaining 6 hours after the temperature is reduced to 600 DEG C with the cooling of the furnace, and obtaining the piece of transparent YAG microcrystalline glass after the temperature is reduced to a room temperature through natural cooling. The preparation method has the advantages of simple preparation process, easiness in obtaining raw material, low cost, larger product size, complex shapes, good transparency, easiness in adjusting spectral quality, good applicability and environmental friendliness.

Description

Technical field: [0001] The invention belongs to the technical field of inorganic material preparation and relates to a novel SiO 2 -Al 2 o 3 -Y 2 o 3 - The preparation method of PbO system yttrium aluminum garnet glass-ceramics, the glass-ceramics can precipitate a single crystal phase YAG, its light transmission is not limited by the grain size, it belongs to the completely transparent YAG glass-ceramics, and its laser efficiency is better than that of existing There are technical products and their systems. Background technique: [0002] In the prior art, the so-called yttrium aluminum garnet (Y 3 Al 5 o 12 ) referred to as YAG belongs to the cubic crystal system, its refractive index is about 1.82, Mohs hardness is about 8.3, colorless, its Chinese name is yttrium aluminum garnet, which is derived from yttrium aluminum garnet, is Y 2 o 3 and Al 2 o 3 A compound formed during high temperature reaction; it is an inorganic non-metallic material with excellent opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02
Inventor 戚凭何丽珠王伟卢朝靖
Owner QINGDAO UNIV
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