Microstructure evolution during reactive sintering of Y3Al5O12:Nd3+ transparent ceramics: Influence of green body annealing

(Tb0.6Y0.4)3Al5O12 transparent ceramics were successfully fabricated by solid-state reactive sintering using Tb4O7, Y2O3, and α-Al2O3 powders as raw materials. The effect of (Tb+Y)/Al ratio on microstructure evolution and densification process was investigated in detailed. The results showed that the grain growth kinetics were significantly affected by (Tb+Y)/Al ratio. Al-rich and Tb-rich phases appeared in part of the samples of different ratios. Particularly, excess aluminum increased the diffusing process, leading to a higher densification rate, while samples with excess terbium ratios displayed a smaller grain size and lower relative density. The optical quality was highly related to the amount of the secondary phase produced by different (Tb+Y)/Al ratios. Finally, (Tb0.6Y0.4)3Al5O12 transparent ceramics have been fabricated through pre-sintering in vacuum, followed by hot isostatic sintering (HIP), and the best transmittance of sample with a 4 mm thickness was approximately 78% at 1064 nm.

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Gelcasting and reactive sintering of sheet-like YAG transparent ceramics

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2015.08.212 ◽

2015 ◽

Vol 652 ◽

pp. 250-253 ◽

Cited By ~ 13

Author(s):

Yi Sun ◽

Xianpeng Qin ◽

Guohong Zhou ◽

Hailong Zhang ◽

Xiang Peng ◽

...

Keyword(s):

Transparent Ceramics ◽

Reactive Sintering

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The phase, microstructure evolution and the Nd3+ function in the fabrication process of LuAG transparent ceramics

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2018.05.008 ◽

2018 ◽

Vol 38 (11) ◽

pp. 4043-4049 ◽

Cited By ~ 2

Author(s):

Dongyue Yan ◽

Peng Liu ◽

Xiaodong Xu ◽

Jian Zhang ◽

Dingyuan Tang

Keyword(s):

Microstructure Evolution ◽

Fabrication Process ◽

Transparent Ceramics

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Influence of doping concentration on microstructure evolution and sintering kinetics of Er:YAG transparent ceramics

Optical Materials ◽

10.1016/j.optmat.2014.08.016 ◽

2014 ◽

Vol 37 ◽

pp. 706-713 ◽

Cited By ~ 18

Author(s):

Jing Liu ◽

Qiang Liu ◽

Jiang Li ◽

Maxim Ivanov ◽

Xuewei Ba ◽

...

Keyword(s):

Microstructure Evolution ◽

Doping Concentration ◽

Transparent Ceramics ◽

Sintering Kinetics ◽

Kinetics Of

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Influence of non-stoichiometry on solid-state reactive sintering of YAG transparent ceramics

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2015.04.038 ◽

2015 ◽

Vol 35 (11) ◽

pp. 3127-3136 ◽

Cited By ~ 22

Author(s):

Jing Liu ◽

Xiaonong Cheng ◽

Jiang Li ◽

Tengfei Xie ◽

Maxim Ivanov ◽

...

Keyword(s):

Solid State ◽

Transparent Ceramics ◽

Reactive Sintering

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Densification and microstructure evolution of Cr4+,Nd3+:YAG transparent ceramics for self-Q-switched laser

Ceramics International ◽

10.1016/j.ceramint.2007.07.019 ◽

2008 ◽

Vol 34 (7) ◽

pp. 1675-1679 ◽

Cited By ~ 18

Author(s):

Jiang Li ◽

Yusong Wu ◽

Yubai Pan ◽

Huamin Kou ◽

Yun Shi ◽

...

Keyword(s):

Microstructure Evolution ◽

Transparent Ceramics

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Fabrication and Properties of High Quality Transparent Ho:YAG Ceramics

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.185.51 ◽

2012 ◽

Vol 185 ◽

pp. 51-54

Author(s):

Hao Yang ◽

Jian Zhang ◽

Xian Peng Qin ◽

De Wei Luo ◽

Jan Ma ◽

...

Keyword(s):

Cross Section ◽

Yttrium Aluminum Garnet ◽

Transparent Ceramics ◽

Reactive Sintering ◽

Photoluminescence Spectra ◽

Vacuum Sintering ◽

High Quality ◽

Average Grain Size ◽

Yttrium Aluminum ◽

Sintering Method

High quality holmium doped Yttrium Aluminum Garnet (YAG) transparent ceramics were fabricated by a reactive sintering method under vacuum. Fully dense Ho:YAG ceramics with the average grain size of ~ 10 μm were obtained after vacuum sintering at 1780 for 8 h. The optical properties, microstructures and photoluminescence spectra of the fabricated Ho:YAG ceramics were investigated. The transmittances of Ho:YAG ceramic are higher than 82% at 400 nm and 84% at 2400 nm. The absorption coefficient was 1.32 cm-1 for 1.5 at.% Ho:YAG at 1907 nm. And the absorption cross section of the Ho:YAG ceramic is 0.645×10-20 cm2.

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