MEASUREMENT OF OXYGEN POTENTIAL IN Na2SO4-CONTAINING Na2O-B2O3-Al2O3 MELTS BY ZrO2 SENSOR
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Mixed Alkali Effect in Li2O -Na2O-B2O3 Glasses Containing CuO-An EPR and Optical Study
The “mixed alkali effect” is one of the classical anomalies of glass science. We report here an interesting phenomenon “Mixed Alkali Effect” observed for a series of Cu ions doped xLi2O-(30x)Na2O-70B2O3 (5 ≤ x ≤ 25) glasses, investigated by EPR and optical absorption techniques. The EPR spectra of all the investigated samples exhibit resonance signals characteristic of Cu ions in octahedral sit...
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BaO -SiO2-Al2O3 glass ceramics containing K2O and B2O3 were prepared using conventional melting of powered batches, quenching in water and crystallization of sintered glass. XRD patterns introducehexacelsian and celsian as two major crystallized phases in sintered glass-ceramics. Presence of K2O enhances crystallization of hexacelsianin comparison withB2O3.Observations showed sintering temperat...
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ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1995
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.44.507appendix_266