scholarly journals Ni^2+ doped glass ceramic fiber fabricated by melt-in-tube method and successive heat treatment

2015 ◽  
Vol 23 (22) ◽  
pp. 28258 ◽  
Author(s):  
Zaijin Fang ◽  
Shupei Zheng ◽  
Wencai Peng ◽  
Hang Zhang ◽  
Zhijun Ma ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Glass Ceramic ◽  
Ceramic Fiber ◽  
Doped Glass

scholarly journals Powder-in-Tube Reactive Molten-Core Fabrication of Glass-Clad BaO-TiO2-SiO2 Glass–Ceramic Fibers

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 395 ◽  
Author(s):  
Shuo Yang ◽  
Hanna Heyl ◽  
Daniel Homa ◽  
Gary Pickrell ◽  
Anbo Wang
Keyword(s):  
Heat Treatment ◽  
Glass Ceramic ◽  
Second Harmonic ◽  
Picosecond Laser ◽  
Fused Silica ◽  
Ceramic Fiber ◽  
Powder Materials ◽  
Isothermal Heat Treatment ◽  
Ceramic Fibers ◽  
Powder In Tube

In this paper we report the fabrication of glass-clad BaO-TiO2-SiO2 (BTS) glass–ceramic fibers by powder-in-tube reactive molten-core drawing and successive isothermal heat treatment. Upon drawing, the inserted raw powder materials in the fused silica tubing melt and react with the fused silica tubing (housing tubing) via dissolution and diffusion interactions. During the drawing process, the fused silica tubing not only serves as a reactive crucible, but also as a fiber cladding layer. The formation of the BTS glass–ceramic structure in the core was verified by micro-Raman spectroscopy after the successive isothermal heat treatment. Second-harmonic generation and blue-white photoluminescence were observed in the fiber using 1064 nm and 266 nm picosecond laser irradiation, respectively. Therefore, the BTS glass–ceramic fiber is a promising candidate for all fiber based second-order nonlinear and photoluminescence applications. Moreover, the powder-in-tube reactive molten core method offers a more efficient and intrinsic contamination-free approach to fabricate glass–ceramic fibers.

Efficient neodymium-doped glass-ceramic fiber laser and amplifier

2001 ◽  
Vol 26 (3) ◽  
pp. 145 ◽  
Author(s):  
B. N. Samson ◽  
P. A. Tick ◽  
N. F. Borrelli
Keyword(s):  
Fiber Laser ◽  
Glass Ceramic ◽  
Ceramic Fiber ◽  
Doped Glass

Nickel-doped nanocrystalline glass-ceramic fiber

2002 ◽  
Vol 27 (15) ◽  
pp. 1309 ◽  
Author(s):  
B. N. Samson ◽  
L. R. Pinckney ◽  
J. Wang ◽  
G. H. Beall ◽  
N. F. Borrelli
Keyword(s):  
Glass Ceramic ◽  
Ceramic Fiber

Characterisation of thermo-mechanical properties of MgO–Al2O3–SiO2 glass ceramic with different heat treatment temperatures

2011 ◽  
Vol 46 (17) ◽  
pp. 5822-5829 ◽  
Author(s):  
Z. Shamsudin ◽  
A. Hodzic ◽  
C. Soutis ◽  
R. J. Hand ◽  
S. A. Hayes ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Glass Ceramic ◽  
Sio2 Glass

scholarly journals Solid Solutions Formation Mechanism in Cordierite-Mullite Glass Materials During Ceramization

2020 ◽  
Vol 14 (4) ◽  
pp. 583-589
Author(s):  
Оksana Savvova ◽  
◽  
Hennadiy Voronov ◽  
Оlena Babich ◽  
Oleksii Fesenko ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Formation Mechanism ◽  
Glass Ceramic ◽  
High Strength ◽  
Ceramic Materials ◽  
Ceramic Coatings ◽  
Resource Saving ◽  
Aluminosilicate Glasses ◽  
Glass Ceramic Materials ◽  
Fine Crystalline Structure

Relevance of the development of high-strength glass-ceramic coatings obtained by resource-saving technology for protective elements has been established. Structure formation mechanism in magnesium aluminosilicate glasses during heat treatment has been analyzed. Selection of the system was substantiated, model glasses and glass-ceramic materials on its base have been developed. Patterns of structure regularity and formation of the phase composition of glass-ceramic materials during their ceramization have been investigated. It was established that the presence of crystalline phase of mullite after melting leads to formation of the primary crystals and allows the formation of the fine crystalline structure under conditions of the low-temperature heat treatment at the nucleation stage. Developed high-strength glass ceramic materials can be used as a base in creating protective elements for special-purpose vehicles by energy-saving technology.

scholarly journals Bone bonding ability of some borate bio-glasses and their corresponding glass-ceramic derivatives

2012 ◽  
Vol 6 (4) ◽  
pp. 183-192 ◽  
Author(s):  
Fatma Margha ◽  
Amr Abdelghany
Keyword(s):  
Heat Treatment ◽  
Fourier Transform ◽  
Glass Ceramic ◽  
Glass Composition ◽  
Glass Ceramics ◽  
Soda Lime ◽  
Phosphate Solution ◽  
Borate Glasses ◽  
X Ray Diffraction ◽  
X Ray

Ternary borate glasses from the system Na2O?CaO?B2O3 together with soda-lime-borate samples containing 5 wt.% of MgO, Al2O3, SiO2 or P2O5 were prepared. The obtained glasses were converted to their glass-ceramic derivatives by controlled heat treatment. X-ray diffraction was employed to investigate the separated crys?talline phases in glass-ceramics after heat treatment of the glassy samples. The glasses and corresponding glass-ceramics after immersion in water or diluted phosphate solution for extended times were characterized by the grain method (adopted by several authors and recommended by ASTM) and Fourier-transform infrared spectra to justify the formation of hydroxyapatite as an indication of the bone bonding ability. The influence of glass composition on bioactivity potential was discussed too.

scholarly journals Energy Transfer Study on Tb3+/Eu3+ Co-Activated Sol-Gel Glass-Ceramic Materials Containing MF3 (M = Y, La) Nanocrystals for NUV Optoelectronic Devices

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2522 ◽  
Author(s):  
Natalia Pawlik ◽  
Barbara Szpikowska-Sroka ◽  
Wojciech A. Pisarski
Keyword(s):  
Heat Treatment ◽  
Energy Transfer ◽  
Glass Ceramic ◽  
Sol Gel ◽  
Optoelectronic Devices ◽  
Emission Spectra ◽  
Ceramic Materials ◽  
Near Ultraviolet ◽  
Glass Ceramic Materials ◽  
Significant Prolongation

In the present work, the Tb3+/Eu3+ co-activated sol-gel glass-ceramic materials (GCs) containing MF3 (M = Y, La) nanocrystals were fabricated during controlled heat-treatment of silicate xerogels at 350 °C. The studies of Tb3+ → Eu3+ energy transfer process (ET) were performed by excitation and emission spectra along with luminescence decay analysis. The co-activated xerogels and GCs exhibit multicolor emission originated from 4fn–4fn optical transitions of Tb3+ (5D4 → 7FJ, J = 6–3) as well as Eu3+ ions (5D0 → 7FJ, J = 0–4). Based on recorded decay curves, it was found that there is a significant prolongation in luminescence lifetimes of the 5D4 (Tb3+) and the 5D0 (Eu3+) levels after the controlled heat-treatment of xerogels. Moreover, for both types of prepared GCs, an increase in ET efficiency was also observed (from ηET ≈ 16% for xerogels up to ηET = 37.3% for SiO2-YF3 GCs and ηET = 60.8% for SiO2-LaF3 GCs). The changes in photoluminescence behavior of rare-earth (RE3+) dopants clearly evidenced their partial segregation inside low-phonon energy fluoride environment. The obtained results suggest that prepared SiO2-MF3:Tb3+, Eu3+ GC materials could be considered for use as optical elements in RGB-lighting optoelectronic devices operating under near-ultraviolet (NUV) excitation.

Neodymium-doped glass-ceramic laser material

1972 ◽  
Vol 7 (9) ◽  
pp. 1090-1092 ◽  
Author(s):  
C. F. Rapp ◽  
J. Chrysochoos
Keyword(s):  
Glass Ceramic ◽  
Laser Material ◽  
Ceramic Laser ◽  
Doped Glass
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