Mixed-alkali effect on hardness and indentation-loading behavior of a borate glass system

2020 ◽  
Vol 548 ◽  
pp. 120314
Author(s):  
Zhitao Shan ◽  
Yanfei Zhang ◽  
Shujiang Liu ◽  
Haizheng Tao ◽  
Yuanzheng Yue
Keyword(s):  
Borate Glass ◽  
Glass System ◽  
Mixed Alkali ◽  
Mixed Alkali Effect

Mixed alkali effect in optical properties of lithium–potassium bismuth borate glass system

2004 ◽  
Vol 58 (5) ◽  
pp. 694-698 ◽  
Author(s):  
A Agarwal ◽  
V.P Seth ◽  
S Sanghi ◽  
P Gahlot ◽  
S Khasa
Keyword(s):  
Optical Properties ◽  
Borate Glass ◽  
Glass System ◽  
Bismuth Borate ◽  
Mixed Alkali ◽  
Mixed Alkali Effect ◽  
Bismuth Borate Glass

scholarly journals OPTICAL PROPERTIES ON Li2O-K2O-WO3-B2O3 GLASS SYSTEM

2013 ◽  
Vol 22 ◽  
pp. 278-283
Author(s):  
A. EDUKONDALU ◽  
M. A. SAMEE ◽  
SHAIKH KAREEM AHMMAD ◽  
SAIR MD. TAQIULLAH ◽  
SYED RAHMAN ◽  
...  
Keyword(s):  
Glass Structure ◽  
Glass System ◽  
Alkali Concentration ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Mixed Alkali ◽  
Absorption Studies ◽  
Mixed Alkali Effect ◽  
Oxide Ion ◽  
B2o3 Glass

Mixed alkali tungsten borate glasses xLi2O–(30–x) K2O–10WO3–60B2O3 (0 < x < 30) were prepared from the melts. These glasses were characterized using X-ray diffraction, differential scanning calorimetry and density measurements. Optical absorption studies were carried out as a function of alkali content to look for mixed alkali effect (MAE) on the spectral properties of these glasses. From the study of ultraviolet absorption edge, the optical band gap energies and Urbach energies were evaluated. The average electronic polarizability of the oxide ion, optical basicity and the interaction parameters were also evaluated for all the glasses. Many of these parameters vary non-linearly exhibiting a minima or maxima with increasing alkali concentration, indicating the mixed alkali effect. An attempt is made to interpret MAE in this glass system in terms of its glass structure.

Diffusion and Ionic Conduction in Soda-Lime Silicate Glasses and in Alkali Borate Glasses

2011 ◽  
Vol 312-315 ◽  
pp. 1184-1197
Author(s):  
Helmut Mehrer
Keyword(s):  
Borate Glass ◽  
Ionic Conduction ◽  
Soda Lime ◽  
Tracer Diffusion ◽  
Sodium Borate ◽  
Soda Lime Glass ◽  
Borate Glasses ◽  
Mixed Alkali ◽  
Mixed Alkali Effect ◽  
Pressure Independent

This paper reviews typical results of tracer diffusion and ionic conduction in soda-lime silicate glass and in single-alkali and mixed-alkali borate glass obtained in our laboratory and published in detail elsewhere. We have studied tracer diffusion of modifier cations and ionic conduction as functions of composition, temperature and, in the case of borate glass, also as function of pressure. We compare tracer diffusion with charge diffusion and in the case of soda-lime glass also with viscosity diffusion. The Haven ratios for soda-lime glass are temperature independent. For sodium borate glass the Haven ratio is almost temperature- and pressure-independent, whereas it decreases significantly with decreasing temperature and increasing pressure for rubidium borate glass. It also decreases with increasing alkali content. We attribute these facts to collective atomic jump events, in which several ions move simultaneously in a string-like or chain-like fashion. We also illustrate the mixed-alkali effect, which was studied by conductivity measurements and by tracer diffusion for mixed sodium-rubidium borate glasses.

Electrical and mechanical mixed alkali effect in a lithium/sodium borate glass at GHz frequencies

1994 ◽  
Vol 70-71 ◽  
pp. 323-327 ◽  
Author(s):  
D WILMER ◽  
T KANTIMM ◽  
O LAMBERTY ◽  
K FUNKE ◽  
M INGRAM ◽  
...  
Keyword(s):  
Borate Glass ◽  
Sodium Borate ◽  
Mixed Alkali ◽  
Mixed Alkali Effect ◽  
Sodium Borate Glass

scholarly journals Local structure of alkalis in mixed-alkali borate glass to elucidate the origin of mixed-alkali effect

2015 ◽  
Vol 3 (4) ◽  
pp. 412-416 ◽  
Author(s):  
Yomei Tokuda ◽  
Yuya Takahashi ◽  
Hirokazu Masai ◽  
Shunichi Kaneko ◽  
Yoshikatsu Ueda ◽  
...  
Keyword(s):  
Local Structure ◽  
Borate Glass ◽  
Mixed Alkali ◽  
Mixed Alkali Effect
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