Estimation of Glass-Forming Ability and Glass Stability of Sb2S3-As2S3-Sb2Te3 Glasses by Thermal Properties

2007 ◽  
Vol 7 (21) ◽  
pp. 3167-3176 ◽  
Author(s):  
K. N`Dri ◽  
J. Sei . ◽  
D. Houphouet-Boigny . ◽  
G. Kra . ◽  
J.C. Jumas .
Keyword(s):  
Thermal Properties ◽  
Glass Forming Ability ◽  
Glass Stability ◽  
Glass Forming

Effect of K2O/ZnO+CaO Ratio on Density, Glass Forming Ability, Crystallization of SiO2- Al2O3- ZnO- K2O- CaO Frites

2021 ◽  
Author(s):  
aida faghinia ◽  
R. Salami ◽  
Z. Khakpour ◽  
M. Zakeri
Keyword(s):  
Glass Transition ◽  
Mole Fraction ◽  
Raw Materials ◽  
Glass Forming Ability ◽  
Powder Size ◽  
Molar Volumes ◽  
Glass Stability ◽  
Glass Forming ◽  
Zno Powder ◽  
Hardness Values

Abstract The frites by mole fraction of 2.5 SiO2, 0.20 Al2O3, 0.15 B2O3, 0.15ZnO, 0.17K2O, 0.67CaO systems in three ratios of S including 0.37(denoted by F1frites ),0.31(F2), 0.24(F3) (S=K2O/CaO+ZnO) were studied. ZnO powder with 500 nm (N series) and >1μm sizes (F series) opted from the recycled Zn ingots dusts and commercially ZnO respectively, were used as the raw materials. By decreasing the S ratio, the Molar Volumes of frites were decreased, The glass transition ΔTg(=-154ºC), and the crystallization temperatures ΔTp (=+17ºC) values were decreased and increased respectively. It was shown that the GS (glass stability) values are independent of the Zinc Oxide's powder size, while the Molar Volumes of N series were lower than the F ones. The Zinc Silicate (Willemite) beside Anorthite and Parawollastonite phases were crystallized in the resulted glazes. The hardness values were in 700-850 Hv range, the transparency and whiteness were higher than 80 and 60 respectively.

The influence of Ag substitution for Cu on glass-forming ability and thermal properties of Mg-based bulk metallic glasses

2012 ◽  
Vol 358 (12-13) ◽  
pp. 1425-1429 ◽  
Author(s):  
Leilei Zhang ◽  
Ran Li ◽  
Jianfeng Wang ◽  
Huiyan Zhang ◽  
Nengbin Hua ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Ag Substitution

scholarly journals Study on Upconversion and Thermal Properties of Tm3+/Yb3+ Co-Doped La2O3-Nb2O5-Ta2O5 Glasses

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1352 ◽  
Author(s):  
Minghui Zhang ◽  
Haiqin Wen ◽  
Xiuhong Pan ◽  
Jianding Yu ◽  
Hui Shao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Upconversion Luminescence ◽  
Solid State Laser ◽  
Glass Forming Ability ◽  
High Thermal Stability ◽  
Temperature Sensing ◽  
Glass Forming ◽  
Dta Analysis ◽  
Co Doped

The effect of Yb3+ ions on upconversion luminescence and thermal properties of Tm3+/Yb3+ co-doped La2O3-Nb2O5-Ta2O5 glasses has been studied. Glass transition temperature is around 740 °C, indicating high thermal stability. The effect of Yb3+ ions on the thermal stability is not obvious. Both the glass forming ability and the upconversion luminescence first increase and then decrease with the increase of Yb3+ ions. The glasses perform low glass forming ability with ΔT around 55 °C. Blue and red emissions centered around 477, 651, and 706 nm are obtained at the excitation of 976 nm laser. The upconversion luminescence mechanism is energy transfer from Yb3+ to Tm3+ mixed with two- and three- photon processes. The thermal kinetic Differential Thermal Analysis (DTA)-analysis indicates that the average activation energy first increases and then decreases with the increase of Yb3+ ions. This result can be introduced in order to improve upconversion luminescence of glasses by crystallization in the future. Tm3+/Yb3+ co-doped La2O3-Nb2O5-Ta2O5 glasses with good upconversion and thermal properties show promising applications in solid-state laser, optical temperature sensing.

scholarly journals Can glass stability parameters infer glass forming ability?

2005 ◽  
Vol 351 (40-42) ◽  
pp. 3296-3308 ◽  
Author(s):  
Marcio L.F. Nascimento ◽  
Luciana A. Souza ◽  
Eduardo B. Ferreira ◽  
Edgar D. Zanotto
Keyword(s):  
Glass Forming Ability ◽  
Stability Parameters ◽  
Glass Stability ◽  
Glass Forming

scholarly journals Glass Forming Ability and Thermal Properties of the Mg-Based Amorphous Alloys with Dual Rare Earth Elements Addition

2007 ◽  
Vol 48 (7) ◽  
pp. 1684-1688 ◽  
Author(s):  
J. S. C. Jang ◽  
C. C. Tseng ◽  
L. J. Chang ◽  
C. F. Chang ◽  
W. J. Lee ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Amorphous Alloys ◽  
Glass Forming Ability ◽  
Glass Forming

scholarly journals Crystallization Behavior and Thermal Analysis of CoFeB Thin Films

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jiun-Yi Tseng ◽  
Yuan-Tsung Chen ◽  
Z. G. Chang ◽  
C. W. Wu ◽  
L. C. Yang
Keyword(s):  
Thin Films ◽  
Activation Energy ◽  
Thermal Analysis ◽  
Thermal Properties ◽  
Crystallization Behavior ◽  
Glass Forming Ability ◽  
Dc Magnetron Sputtering ◽  
Glass Substrates ◽  
Glass Forming ◽  
Onset Crystallization Temperature

We examined two targets containing Co40Fe40B20and Co60Fe20B20. We deposited Co40Fe40B20and Co60Fe20B20monolayer thin films of various thicknesses on glass substrates through DC magnetron sputtering; the thicknesses ranged from 25 to 200 Å. The thermal properties of the Co40Fe40B20and Co60Fe20B20thin films were determined using a differential scanning calorimeter (DSC). The thermal properties included the glass transition temperature (Tg), onset crystallization temperature (Tx), and glass-forming ability, which were determined according to these values. Using the Kissinger formula revealed that the activation energy of the Co60Fe20B20with a thickness of 75 Å is the highest, implying that crystallization was the lowest and the Co60Fe20B20film showed anticrystallization properties. However, the energy of 75 Å Co40Fe40B20thin films was the lowest, which is opposite to that of Co60Fe20B20. This observation can be reasonably explained based on the concentration of Co or Fe. Therefore, a thickness of 75 Å is critical.

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