Nano structure yttrium aluminum garnet-based transparent ceramic material, preparation method and application thereof

Abstract

The invention discloses a nano structure yttrium aluminum garnet-based transparent ceramic material, a preparation method and an application thereof. A transparent ceramic made of the material is of anano composite-phase structure consisting of YAG and Al2O3, and in addition the grain sizes of a YAG crystal phase and an Al2O3 crystal phase are both smaller than 100nm. A YAG-based transparent ceramic is prepared from an amorphous block glass precursor through thermal treatment, in the thermal treatment process, a part of aluminum dioxide in the block glass precursor is reacted with yttrium oxide, then the YAG crystal phase is generated, and the generated YAG crystal phase and the residual aluminum oxide crystal phase form a composite phase nano structure. The YAG transparent ceramic material has hardness and elastic modus comparable to or even superior to those of a YAG single crystal, is optically transparent between visible light and middle-infrared bands, has excellent photoluminescence properties after light activated ion doping, and has wide application prospects in fields such as laser, fluorescence, flicking light emission, optical lenses, artware and jewelries.

Description

technical field

[0001] The invention belongs to the technical field of transparent ceramic materials, and relates to a nanostructure yttrium aluminum garnet-based transparent ceramic material, its preparation and application. Background technique

[0002] Yttrium aluminum garnet (Y 3 Al 5 o 12 , YAG) transparent ceramics are an important photoluminescent matrix material with excellent mechanical, thermal properties, high temperature stability and optical properties, and have important applications in the fields of laser, fluorescence and scintillation. Judging from the current reports, the preparation of YAG transparent ceramics mainly adopts powder sintering technology. However, in order to achieve high transparency of YAG ceramics, high purity raw materials, fine grains and good dispersion are required, and special sintering methods are required to fully eliminate the pores in the ceramics to achieve full densification of the ceramics and extremely thin grain boundaries...

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