Kusno Isnugrohoa, Slamet Sumardia, Yusup Henronursitoa, David C Birawidhaa, Muhammad Amina, Nelly Fifiantib and Pulung Karo Karob

Abstrak

Research on basalt scoria as raw material for glassceramic has been carried out using materials from the Maringgai area, East Lampung. Basalt scoria powder was melted using a furnace with a holding time of 2 hours. The sintering process was carried out with temperature variations are 800 oC, 900 oC, 1000 oC, and 1200 oC. Phase change analysis was obtained using XRD and other characterizations using XRF and FESEM equipped with EDS. The best product was obtained at 1000 oC with increasing augite and diopside phases as the main crystal phases of basalt-based glass-ceramic. XRD test results were dominated by anorthite (CaAl2SiO8), albite (Na(AlSi3O8)), augite (Ca(Fe,Mg)Si2O6), and magnetite (Fe3O4). phases. The results of this study are in line with the results of XRF characterization that basalt scoria is dominated by minerals CaO, Fe2O3, SiO2, and Al2O3. The microstructure formed varied with the high content of Ca, Mg, Al, Fe and Si based on the FE-SEM test results.

Keywords

Basalt scoria, phase, sintering, ceramic-glass