Sintering Behavior and Machinability in Mica Glass-Ceramic of the System SiO2-Al2O3-MgO-K2O-B2O3-F
E. Ercenk and S. Yilmaz
Sakarya University, Engineering Faculty, Department of Metallurgical and Materials Engineering, Esentepe Campus, 54187 Sakarya, Turkey
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Mica glass-ceramic was prepared by sintering method from in the SiO2-Al2O3-MgO-K2O-B2O3-F2 system. The sintering behavior and machinability of a glass-ceramic composition were examined. The starting materials were mixed and milled in an alumina ball mill for 2 h. Then the powders were sieved to obtain grain sizes smaller than 75 μm. For the shaping process, disc samples were prepared by pressing at 100 MPa. The pressed discs were sintered at temperatures in the range from 900 to 1200°C for 2 h in an electric furnace using a heating rate of 5°C/min. X-ray diffraction analysis, scanning electron microscopy, and machinability tests for characterization were performed on sintered samples. The results showed that all samples exhibited similar phases formation and good machinability.

DOI: 10.12693/APhysPolA.125.629
PACS numbers: 61.05.cp, 68.37.Hk, 81.20.Ev, 81.20.Wk, 81.05.Je, 81.05.Mh