Chromium oxide additions in lithium disilicate glass crystallization

作者：Rincon Mora B; Jordan M M; Ma Rincon J

来源：Materials Letters, 2016, 179: 138-141.

DOI：10.1016/j.matlet.2016.05.061

• Glasses
• Crystal growth
• Phase separation
• Lithium silicates
• Chromium oxide

The effect of chromium oxide additions (0.05-1.00 mol% interval) on the crystallization of an original 26Li(2)O center dot 74SiO(2) glass (mol%) formulated in the liquid metastable immiscibility dome of the binary system has been investigated by XRD and TEM-replica electron microscopy. Results were discussed by considering the phases that can be formed in the Li2O-Cr2O3-SiO2 partial equilibrium ternary diagram. From these glasses, lithium disilicate is the main crystalline phase after thermal treatments at 550-650 degrees C. Maximum crystallization is obtained with the lowest content addition of Cr2O3 (0.05 mol%). Glass-in glass phase separation was observed in these glasses coexisting with the crystallization areas.

• 出版日期2016-9-15