Phosphate Glass Ceramics: Formation, Properties, and Applications

摘要

Several glasses in the Na sub 2 O-CaO-P sub 2 O sub 5 , Na sub 2 O-BaO-P sub 2 O sub 5 , Na sub 2 O-Al sub 2 O sub 3 -P sub 2 O sub 5 , and Li sub 2 O-BaO-P sub 2 O sub 5 systems devitrified to form glass ceramics upon heat treatment. One mol % of TiO sub 2 , ZrO sub 2 , Y sub 2 O sub 3 , La sub 2 O sub 3 , Ta sub 2 O sub 5 , as nucleating agents included in a 39 Na sub 2 O.10 BaO.50P sub 2 O sub 5 .1 nucleating agent (mol %) glass caused a larger volume of crystal phases to form compared to the undoped glass. Grain sizes generally increased with field strength of nucleation cation. (ERA citation 06:017124)