Cr(III) in gahnite-containing transparent glass-ceramics: Influence of melting conditions and heat treatment on crystallization and spectroscopic properties

1986 ◽  
Vol 129 (5) ◽  
pp. 450-457 ◽  
Author(s):  
A. Kisilev ◽  
R. Reisfeld ◽  
A. Buch ◽  
M. Ish-Shalom
Keyword(s):  
Heat Treatment ◽  
Glass Ceramics ◽  
Spectroscopic Properties ◽  
Transparent Glass ◽  
Melting Conditions

Research on Processing Conditions of CBS Transparent Glass-Ceramics

2013 ◽  
Vol 873 ◽  
pp. 733-736
Author(s):  
Yi Min Wang ◽  
Hong Bo Zhang ◽  
Chun Hui Su ◽  
Qin Lei Wei
Keyword(s):  
Heat Treatment ◽  
Luminescence Property ◽  
Room Temperature ◽  
Glass Ceramics ◽  
Nucleating Agent ◽  
Processing Conditions ◽  
Transparent Glass ◽  
Melting Method ◽  
Heat Treatment Regime ◽  
Precursor Glass

On the basis of experimental verification, the optimum processing conditions of CaO-B2O3-SiO2(CBS) system transparent glass-ceramics were obtained. Composition of main raw powders (wt%) was:CaO 38%,SiO240%,B2O312%.The precursor glass was prepared by melting method and annealed at 560°C for 2h and cooled to room temperature at a speed of 5°C/min.The best nucleating agent is P2O5. The appropriate heat treatment regime to precursor glass was determined to be 2h at 600°C for nucleation and 3h at 780°C for crystallizition.Under this condition,the transmittion of glass-ceramics at the range of visable light is 72% in average and Sm3+keep good luminescence property doped in this host material.

Impact of heat treatment on the Mn2+ doped transparent glass ceramics containing NaZnPO4 nanocrystals

2017 ◽  
Vol 189 ◽  
pp. 172-175 ◽  
Author(s):  
Bo-Yang Wang ◽  
Rui Zhang ◽  
Wen-Feng Zhu ◽  
Guo-Hua Chen
Keyword(s):  
Heat Treatment ◽  
Glass Ceramics ◽  
Transparent Glass

Preparation and Characterization of Na2O-Y2O3-P2O5-SiO2 Transparent Glass Ceramics

2018 ◽  
Vol 281 ◽  
pp. 692-698 ◽  
Author(s):  
Meng Jie Zhao ◽  
Xiang Yu Zou ◽  
Qin Lei Wei ◽  
Shuo Meng ◽  
Hong Bo Zhang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Refractive Index ◽  
Glass Ceramic ◽  
Visible Region ◽  
Glass Ceramics ◽  
Scanning Calorimetry ◽  
Transparent Glass ◽  
Diffraction Patterns ◽  
The Impact ◽  
Precursor Glass

Transparent glass ceramics containing Na3.6Y1.8(PO4)3 crystals were successfully synthesized using high temperature melting quenching and subsequent heat treatment of the precursor glass with a composition 15Na2CO3-3Y2O3-45SiO2-31H3BO3- 5.4P2O5-0.6Sb2O3 (mol%). The impact of heat treatment is investigated in detail. The glass sample was tested by differential scanning calorimetry analysis to determine the heat treatment system. The ideal heat-treated condition is at 650°C for 2 h. The structure and morphology properties were systematically analyzed by recording X-ray diffraction patterns and scanning electron microscopy images, which indicate that Na3.6Y1.8(PO4)3 crystal were precipitated homogeneously among the glass matrix. The microstructural of precursor glass and glass ceramic were compared by analyzing FTIR spectra, indicating the formation of phosphate groups in glass ceramic. The refractive index of glass ceramics samples were measured. In the visible region, the transmittance of glass ceramics is up to 85%. Moreover, the relationship between the refractive index of the sample and the transmittance is discussed.

Pre-crystallization heat treatment and infrared luminescence enhancement in Ni2+-doped transparent glass-ceramics

2019 ◽  
Vol 515 ◽  
pp. 42-49 ◽  
Author(s):  
N.V. Golubev ◽  
E.S. Ignat'eva ◽  
V.M. Mashinsky ◽  
Е.О. Kozlova ◽  
V.N. Sigaev ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Glass Ceramics ◽  
Luminescence Enhancement ◽  
Transparent Glass ◽  
Infrared Luminescence ◽  
Crystallization Heat

Effect of the heat treatment on the spectroscopic properties of Er3+-Yb3+-doped transparent oxyfluoride nano-glass-ceramics

2018 ◽  
Vol 193 ◽  
pp. 51-60 ◽  
Author(s):  
G. Gorni ◽  
R. Balda ◽  
J. Fernández ◽  
L. Pascual ◽  
A. Durán ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Glass Ceramics ◽  
Spectroscopic Properties

PREPARATION AND SPECTROSCOPIC PROPERTIES OF Yb:YAG GLASS-CERAMICS

2010 ◽  
Vol 24 (18) ◽  
pp. 1997-2006
Author(s):  
FEI LAI ◽  
YUE-PIN ZHANG ◽  
HAI-PING XIA ◽  
XIN-MING ZHANG ◽  
JIN-HAO WANG
Keyword(s):  
Heat Treatment ◽  
Crystalline Phase ◽  
Glass Ceramics ◽  
Spectroscopic Properties ◽  
Crystal Phase ◽  
Melting Method ◽  
Before And After ◽  
Different Temperatures ◽  
Crystallographic Structures

Yb 3+-doped 32 CaO -12 Y 2 O 3-24 Al 2 O 3-31 SiO 2-1 Yb 2 O 3 glasses were prepared by melting method, and then annealed at 950°C, 1050°C and 1100°C, respectively. We analyzed the crystallographic structures of the glasses annealed at different temperatures by XRD, and observed the glass annealed at 1050°C by TEM. The spectroscopic properties of glass before and after annealing were also investigated. Results show that the glasses annealed at 1050°C are YAG glass-ceramics with no impurity crystalline phase. Variances in the spectroscopic properties before and after heat treatment indicate that Yb 3+ ions were preferentially partitioned into the YAG crystal phase, and the transparent Yb : YAG glass-ceramics were obtained.

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