Electrical impedance determination of phase transitions in glasses and melts

Glass–ceramics with zero thermal expansion in the system BaO/Al2O3/B2O3

“…In the system BaO/Al 2 O 3 /B 2 O 3 , the crystallization of BaAl 2 B 2 O 7 occurs. It should also be noted that BaO/Al 2 O 3 /B 2 O 3 glass-ceramics exhibit large ionic conductivities with an attributed activation energy as small as 0.45 eV [12].…”

Thermal expansion of glass–ceramics in the system BaO/Al2O3/B2O3

“…Glass-ceramics with zero expansion coefficients based on other systems have scarcely been described in the literature. Recently, the crystallization of the bulk glass, the behavior during sintering of glass powder and the effect of platinum as nucleating agent, as well as the resulting thermal expansion in this system have been reported [1,9]. Here, a notable effect of the preparation procedure and hence the microstructure on the thermal expansion was reported.…”