Effect of B2O3 on the physical and mechanical properties of calcium fluoroaluminosilicate glass system by Mohammed Efa, Abdelkader, Matori, Khamirul Amin, Mohd Zaid, Mohd Hafiz, Che Abdullah, Che Azurahanim, Zainuddin, Norhazlin, Mayzan, Mohd Zul Hilmi, Kamis, Shahira Liza