Preparation and characteristics of a BaO-Al2O3-B 2O3-SiO2-La2O3 glass ceramic via spray pyrolysis

D. S. Jung; Y. C. Kang

doi:10.1007/s00339-008-4823-5

Preparation and characteristics of a BaO-Al₂O₃-B ₂O₃-SiO₂-La₂O₃ glass ceramic via spray pyrolysis

D. S. Jung, Y. C. Kang

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The characteristics of a BaO-Al₂O₃-B ₂O₃-SiO₂-La₂O₃ glass ceramic prepared by spray pyrolysis were studied. Glass powders with spherical shape and amorphous phase were prepared by complete melting at a preparation temperature of 1∈500°C. The mean size and geometric standard deviation of the powders prepared at the temperature of 1∈500°C were 0.6 μm and 1.3. The glass powders had similar composition to that of the spray solution. The glass transition temperature (T _g) of the glass powders was 600.3°C. Two crystallization exothermic peaks were observed at 769.3 and 837.8°C. Densification of the specimen started at a sintering temperature of 600°C, in which Ba₄La₆O(SiO ₄)₆ as main crystal structure was observed. Complete densification of the specimen occurred at a sintering temperature of 800°C. The specimens sintered at temperatures above 800°C had main crystal structure of BaAl₂Si₂O₈.

Original language	English
Pages (from-to)	411-417
Number of pages	7
Journal	Applied Physics A: Materials Science and Processing
Volume	94
Issue number	2
DOIs	https://doi.org/10.1007/s00339-008-4823-5
Publication status	Published - 2009 Feb
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1007/s00339-008-4823-5

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title = "Preparation and characteristics of a BaO-Al2O3-B 2O3-SiO2-La2O3 glass ceramic via spray pyrolysis",

abstract = "The characteristics of a BaO-Al2O3-B 2O3-SiO2-La2O3 glass ceramic prepared by spray pyrolysis were studied. Glass powders with spherical shape and amorphous phase were prepared by complete melting at a preparation temperature of 1∈500°C. The mean size and geometric standard deviation of the powders prepared at the temperature of 1∈500°C were 0.6 μm and 1.3. The glass powders had similar composition to that of the spray solution. The glass transition temperature (T g) of the glass powders was 600.3°C. Two crystallization exothermic peaks were observed at 769.3 and 837.8°C. Densification of the specimen started at a sintering temperature of 600°C, in which Ba4La6O(SiO 4)6 as main crystal structure was observed. Complete densification of the specimen occurred at a sintering temperature of 800°C. The specimens sintered at temperatures above 800°C had main crystal structure of BaAl2Si2O8.",

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N2 - The characteristics of a BaO-Al2O3-B 2O3-SiO2-La2O3 glass ceramic prepared by spray pyrolysis were studied. Glass powders with spherical shape and amorphous phase were prepared by complete melting at a preparation temperature of 1∈500°C. The mean size and geometric standard deviation of the powders prepared at the temperature of 1∈500°C were 0.6 μm and 1.3. The glass powders had similar composition to that of the spray solution. The glass transition temperature (T g) of the glass powders was 600.3°C. Two crystallization exothermic peaks were observed at 769.3 and 837.8°C. Densification of the specimen started at a sintering temperature of 600°C, in which Ba4La6O(SiO 4)6 as main crystal structure was observed. Complete densification of the specimen occurred at a sintering temperature of 800°C. The specimens sintered at temperatures above 800°C had main crystal structure of BaAl2Si2O8.

AB - The characteristics of a BaO-Al2O3-B 2O3-SiO2-La2O3 glass ceramic prepared by spray pyrolysis were studied. Glass powders with spherical shape and amorphous phase were prepared by complete melting at a preparation temperature of 1∈500°C. The mean size and geometric standard deviation of the powders prepared at the temperature of 1∈500°C were 0.6 μm and 1.3. The glass powders had similar composition to that of the spray solution. The glass transition temperature (T g) of the glass powders was 600.3°C. Two crystallization exothermic peaks were observed at 769.3 and 837.8°C. Densification of the specimen started at a sintering temperature of 600°C, in which Ba4La6O(SiO 4)6 as main crystal structure was observed. Complete densification of the specimen occurred at a sintering temperature of 800°C. The specimens sintered at temperatures above 800°C had main crystal structure of BaAl2Si2O8.

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Preparation and characteristics of a BaO-Al₂O₃-B ₂O₃-SiO₂-La₂O₃ glass ceramic via spray pyrolysis

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