Mono-crystalline nanometer high cristobalite glass-ceramic from nominal pyroxene glass [post]

Amira EL-Rafei, Moenis A Azoz, Esmat M A Hamzawy
2021 unpublished
Transparent glass was prepared from nominal alkali pyroxene (Na2 Mg Si2O6) composition. Incorporation of Cr2O3 in alkali pyroxene composition in two % (0.5 and 1.0) increases the crystallization temperature. High cristobalite was developed alone in all glass samples heat-treated at 800°C. The microstructure shows nanometer crystals of high cristobalite which spread in glassy matrix. The densities, hardness and coefficient of thermal expansion were between 2.49 and 2.53 g/cm3, 505 and 611 kg/mm2
more » ... 505 and 611 kg/mm2 and between 9.38 and 13.32 x 10− 6°C− 1 (30–300 ˚C ) respectively. The antimicrobial activity of the prepared glass and ceramics shows that the only samples contain 1% of Cr2O3shows an inhibition zone in case of Candida albicans yeast.
doi:10.21203/rs.3.rs-299408/v1 fatcat:wtdcrb5w5fa5xjikshmphps2ii