2017 Volume 125 Issue 4 Pages 343-347
We prepared a borosilicate glass, in which the ZrO2 phase is singly crystallizable, i.e., 15Na2O–15ZrO2–30B2O3–40SiO2 glass, and investigated the texture and morphology of the resulting glass-ceramics. ZrO2 dendrites with a tetragonal system (high-temperature phase) were developed as initial phase, and the tetragonal phase was transformed to the monoclinic phase (low-temperature phase) by elongation of the heat-treatment time, and finally the needle-/rod-like crystals on a scale of few hundred nanometers were obtained. The glass-ceramics with monoclinic ZrO2 showed photoluminescence around 480 nm by excitation in the ultraviolet region. The effect of TiO2-addition on the photoluminescent property was also considered.