Effects of ZrO2 concentration on properties of Tm2O3 transparent ceramics by vacuum sintering

2021 ◽  
Author(s):  
Lin-Lin Zhu ◽  
Xin Xu ◽  
Min-Min Dai ◽  
Yu-Jian Jian ◽  
Guang-Xiang Zhang ◽  
...  
Keyword(s):  
Transparent Ceramics ◽  
Vacuum Sintering

Nd:YAG transparent ceramics fabricated by direct cold isostatic pressing and vacuum sintering

2015 ◽  
Vol 50 ◽  
pp. 25-31 ◽  
Author(s):  
Lin Ge ◽  
Jiang Li ◽  
Zhiwei Zhou ◽  
Binglong Liu ◽  
Tengfei Xie ◽  
...  
Keyword(s):  
Cold Isostatic Pressing ◽  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
Isostatic Pressing

scholarly journals Fabrication of Dy2O3 Transparent Ceramics by Vacuum Sintering Using Precipitated Powders

2020 ◽  
Vol 7 (1) ◽  
pp. 6
Author(s):  
Dianjun Hu ◽  
Xin Liu ◽  
Ziyu Liu ◽  
Xiaoying Li ◽  
Feng Tian ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Quality ◽  
Precipitation Method ◽  
Infrared Range ◽  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
Hydrogen Carbonate ◽  
Ammonium Hydrogen ◽  
Liquid Precipitation ◽  
Near Infrared Range

As a kind of promising material for a Faraday isolator used in the visible and near infrared range, Dy2O3 transparent ceramics were prepared by vacuum sintering from the nano-powders synthesized by the liquid precipitation method using ammonium hydrogen carbonate as precipitant with no sintering aids. The synthesized precursor was calcinated at 950 °C–1150 °C for 4 h in air. The influences of the calcination temperature on the morphologies and phase composition of Dy2O3 powders were characterized. It is found that the Dy2O3 powder calcinated at 1000 °C for 4 h is superior for the fabrication of Dy2O3 ceramics. The Dy2O3 transparent ceramic sample prepared by vacuum sintering at 1850 °C for 10 h, and subsequently with air annealing at 1400 °C for 10 h, from the 1000 °C-calcined Dy2O3 powders, presents the best optical quality. The values of in-line transmittance of the optimal ceramic specimen with the thickness of 1.0 mm are 75.3% at 2000 nm and 67.9% at 633 nm. The Verdet constant of Dy2O3 ceramics was measured to be −325.3 ± 1.9 rad/(T·m) at 633 nm, about 2.4 times larger than that of TGG (Tb3Ga5O12) single crystals.

Fabrication and laser performances of Yb:Sc2O3 transparent ceramics from different combination of vacuum sintering and hot isostatic pressing conditions

2020 ◽  
Vol 40 (3) ◽  
pp. 881-886 ◽  
Author(s):  
Guido Toci ◽  
Jan Hostaša ◽  
Barbara Patrizi ◽  
Valentina Biasini ◽  
Angela Pirri ◽  
...  
Keyword(s):  
Hot Isostatic Pressing ◽  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
Isostatic Pressing

Vacuum sintering and optical properties of Gd2-xNdxZr2O7 transparent ceramics using combustion synthesized nanopowders

2020 ◽  
Vol 100 ◽  
pp. 109622 ◽  
Author(s):  
Weiwei Li ◽  
Kuibao Zhang ◽  
Wenwen Zhao ◽  
Dayan Xie ◽  
Baozhu Luo ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transparent Ceramics ◽  
Vacuum Sintering

Synthesis of Fe-doped alumina transparent ceramics by co-precipitation and vacuum sintering

2018 ◽  
Vol 44 (1) ◽  
pp. 799-804 ◽  
Author(s):  
Jinshan Huang ◽  
Qilong Liao ◽  
Fu Wang ◽  
Xu Huang ◽  
Hanzhen Zhu
Keyword(s):  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
Co Precipitation

Optical Properties and Microstructure of Mn: MgAl2O4 Transparent Ceramic after HIP Treatment

2008 ◽  
Vol 368-372 ◽  
pp. 417-419
Author(s):  
Yue Feng Sun ◽  
Tie Cheng Lu ◽  
Xue Jun Wang ◽  
Mu Yun Lei ◽  
Cun Xin Huang
Keyword(s):  
Optical Properties ◽  
Hot Isostatic Pressing ◽  
Wavelength Region ◽  
Optical Transmittance ◽  
Light Transmittance ◽  
Transparent Ceramics ◽  
Light Wavelength ◽  
Vacuum Sintering ◽  
Two Samples ◽  
Mn Doped

5.0at% and 10.0at% Mn-doped MgAl2O4 transparent ceramics have been prepared through vacuum sintering (1750°C /2h) and subsequent hot isostatic pressing (HIP) (1650°C /2h). The effect of microstructure on the light transmittance of the sintered MgAl2O4 is discussed. Results showed that the grains became dense and grain boundary became clear and most of pores inside and between grains were removed, so the transmittance of two samples increased. The optical transmittance of the 5.0at% specimens was increased by one times in the visible light wavelength region. HIP treatment has a great effect on improving the transparency of samples with low doping concentrations.

Fabrication of Nd:YAG transparent ceramics by non-aqueous gelcasting and vacuum sintering

2016 ◽  
Vol 36 (10) ◽  
pp. 2543-2548 ◽  
Author(s):  
Rui Yin ◽  
Jiang Li ◽  
Manjiang Dong ◽  
Tengfei Xie ◽  
Yuelong Fu ◽  
...  
Keyword(s):  
Transparent Ceramics ◽  
Vacuum Sintering

Fabrication of Yb:YAG Transparent Ceramics Using Stearate Melting Derived Ultrafine Powders

2014 ◽  
Vol 602-603 ◽  
pp. 242-247
Author(s):  
Jin Sheng Li ◽  
Xu Dong Sun ◽  
Shao Hong Liu ◽  
Di Huo ◽  
Xiao Dong Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Phase Formation ◽  
Ultrafine Particles ◽  
Transparent Ceramics ◽  
Ultrafine Powders ◽  
Vacuum Sintering ◽  
Melting Method ◽  
Uniform Microstructure ◽  
Rare Earth Doped

Yb rare earth doped YAG ultrafine particles were synthesized by the stearate melting method using yttrium stearate, ytterbium stearate and aluminum tristearate as starting materials. The phase formation of Yb:YAG, the properties and the sintering activity of the powders were investigated by means of XRD, SEM, dilatometry and vacuum sintering. The results show that pure Yb:YAG nanopowders can be obtained by calcining the co-melted precursor at a relatively low temperature of 800 °C for 4 h. The powders calcined at 1000°C have better sintering activity than the powders calcined at other temperatures. For the Yb:YAG powders doping with 0.5% TEOS, the compact can be sintered to 99.2% of the theoretical density at 1600 °C and 99.7% at 1700 °C. The transparent Yb:YAG ceramics obtained by vacuum sintering at 1700 °C for 5 h exhibit a pore-free and uniform microstructure.

scholarly journals Preparation of (La0.2Nd0.2Sm0.2Gd0.2Er0.2)2Zr2O7 High-entropy Transparent Ceramics by Vacuum Sintering

2020 ◽  
pp. 367
Author(s):  
Jianjun ZENG ◽  
Kuibao ZHANG ◽  
Daimeng CHEN ◽  
Haiyan GUO ◽  
Ting DENG ◽  
...  
Keyword(s):  
Transparent Ceramics ◽  
Vacuum Sintering ◽  
High Entropy
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