Formation of new oxide glasses by laser spin melting and free fall cooling

Topol, L. E.; Hengstenberg, D.H.; Blander, M.; Happe, R. A.; Richardson, N.L.; Nelson, Lloyd S.

doi:10.1016/0022-3093(73)90009-4

Cited by 36 publications

(8 citation statements)

References 13 publications

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“…Binary calcium aluminate glasses with high alumina content were investigated by Topol et al A CO 2 laser was utilized for rapid heating of the glass spherules and free‐fall cooling was used to achieve container‐less processing. Glass compositions and yield percentages are shown in Table .…”

Section: Glass Forming Abilitymentioning

confidence: 99%

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Structure, properties, and fabrication of calcium aluminate‐based glasses

Lin

Smedskjær

Mauro

2019

Int J of Appl Glass Sci

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This review focuses on recent advances in the synthesis and characterization of calcium aluminate glasses and the effects of various ion additions/substitutions on the processing and properties of these glasses. Calcium aluminate-based glasses are of great scientific and technological interest because of their extraordinary combination of broad spectral transparency, refractory nature, high mechanical stiffness and hardness, superior chemical durability, and low cost compared to glasses formed in many other families. Current obstacles for large-scale manufacturing include high melting temperature and tendency for devitrification, which have so far received relatively little attention in the literature. The problem with devitrification can be partially mitigated through addition of certain oxides (MgO, GeO 2 , BaO, etc.) without severely impairing the optical transmission for applications as low-loss optical materials. Suggestions for future research are also discussed, including improved understanding of composition-structure-property relationships, possible improvements to CaO-Al 2 O 3 glass fiber fabrication, computational modeling to enable an improved glass-forming ability, and detailed analysis of thermophysical properties for achieving the optimal composition without compromising performance. K E Y W O R D S calcium aluminate glasses, devitrification, mechanical property, optical property, structure | 489 LIN et aL.

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Section: Glass Forming Abilitymentioning

confidence: 99%

“…The structure of ternary calcium aluminosilicate glasses system was studied by Engelhardt et al by conducting high‐resolution solid‐state Si and Al magic angle spinning NMR spectroscopy. Glasses with composition 0.5 SiO 2 >CaO=Al 2 O 3 have a three‐dimensional network.…”

Section: Structural Studiesmentioning

confidence: 99%

Structure, properties, and fabrication of calcium aluminate‐based glasses

Lin

Smedskjær

Mauro

2019

Int J of Appl Glass Sci

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“…8 " 12 They also observed that, while Zr burned explosively in N2/O2 environments, when a N2/O2 ratio of 0.025 was reached, hollow spheres were formed. Mass spectroscopic analysis of the gas inside these spheres showed only N2 to be present, although not in sufficient quantity to inflate the sphere.…”

Section: Discussionmentioning

confidence: 94%

“…During studies of laser spin melting of ceramics, Topol, Hengensbert, et al 12 have observed both transparent and opaque particles similar to those observed in fly ash. (Figure 2 in Reference 12 bears a striking similarity to Figure 2 in this work.)…”

Section: Discussionmentioning

confidence: 99%

Fly Ash from Electrostatic Precipitators: Characterization of Large Spheres

Carpenter

Clark

1980

Journal of the Air Pollution Control Association

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“…26 Glasses can also be formed even from aluminates, but the glass-forming ability is poor. [27][28][29][30][31][32] Improvements in vitrification techniques enable us to vitrify materials that possess a low glass-forming ability.…”

Section: Introductionmentioning

confidence: 99%

Thermal and optical properties of glass and crystalline phases formed in the binary R2O3-Al2O3 (R = La-Lu and Y) system

Kumar

Ishikawa

Basavalingu

et al. 2013

Journal of Applied Physics

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Rare-earth aluminate (RAlO 3 , R ¼ La-Lu and Y) glass and crystalline phases were prepared by containerless levitation in an aerodynamic levitation furnace. In the RAlO 3 system, La, Nd and Sm aluminum perovskites solidified as glass and Eu-Lu and Y aluminum perovskites solidified as crystalline phases. The glass forming region decreased with decreasing ionic radius of the rareearth element. Scanning electron microscopy images and x-ray diffraction results revealed the formation of a single RAlO 3 phase from the undercooled melt. The glass transition temperature, T g , and density increased and the molar volume decreased with decreasing rare-earth element ionic radius. The refractive index at 589 nm exceeds 1.85 in each composition and a transparency of approximately 72% was achieved for the LaAlO 3 glass. V C 2013 AIP Publishing LLC.

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Formation of new oxide glasses by laser spin melting and free fall cooling

Cited by 36 publications

References 13 publications

Structure, properties, and fabrication of calcium aluminate‐based glasses

Structure, properties, and fabrication of calcium aluminate‐based glasses

Fly Ash from Electrostatic Precipitators: Characterization of Large Spheres

Thermal and optical properties of glass and crystalline phases formed in the binary R2O3-Al2O3 (R = La-Lu and Y) system

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