TY - JOUR
T1 - Influence of rare earth oxides on the non-isothermal crystallization of phosphosilicate melts during cooling
AU - Liu, S.J.
AU - Shan, Z.T.
AU - Fu, G.Z.
AU - Yue, Yuanzheng
PY - 2014
Y1 - 2014
N2 - We report a detailed calorimetric study concerning the influence of Yb2O3 and Er2O3 on the non-isothermal crystallization in phosphosilicate melts. The results show that Yb3+/Er3+ ions promote the Zn2SiO4 crystal formation, but suppress the Na3PO4 and AlPO4 formation during cooling. The non-isothermal melt-crystallization kinetics can be well described by the Avrami model. The activation energy Ee of crystallization in both the undoped and Yb3+/Er3+ codoped samples during cooling is determined using the differential iso-conversional method of Friedman. The Ee value decreases with crystallinity (θ = 0.1 to 0.9) during cooling for both glasses, and introducing Yb2O3 and Er2O3 leads to an increase in energy barrier of crystallization upon cooling.
AB - We report a detailed calorimetric study concerning the influence of Yb2O3 and Er2O3 on the non-isothermal crystallization in phosphosilicate melts. The results show that Yb3+/Er3+ ions promote the Zn2SiO4 crystal formation, but suppress the Na3PO4 and AlPO4 formation during cooling. The non-isothermal melt-crystallization kinetics can be well described by the Avrami model. The activation energy Ee of crystallization in both the undoped and Yb3+/Er3+ codoped samples during cooling is determined using the differential iso-conversional method of Friedman. The Ee value decreases with crystallinity (θ = 0.1 to 0.9) during cooling for both glasses, and introducing Yb2O3 and Er2O3 leads to an increase in energy barrier of crystallization upon cooling.
U2 - 10.1016/j.jnoncrysol.2013.11.009
DO - 10.1016/j.jnoncrysol.2013.11.009
M3 - Journal article
SN - 0022-3093
VL - 385
SP - 75
EP - 80
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
ER -