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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 78  2019
Production and Characterization of Alumina and Steatite Based Ceramic Insulators
Mehmet Seref Sonmez*, Sevki Samet Kaplan, Caglar Altun and Mahmut Ercan Acma
Pages : 161-164
DOI : 10.1080/0371750X.2019.1657954
Abstract
In this study, production of alumina and steatite containing ceramic insulators as thermostat material was realized by investigating the composition, pressing pressure and sintering temperature. 90 bar of pressing pressure was employed to give a ring shape to thermostat insulators by mixing with 3% kerosene. Alumina based samples were sintered at 1400oC, while 1300oC sintering temperature was determined to be efficient for steatite based samples. Optimum pressing pressure and sintering temperature for batches were 90 bar and 1350oC, respectively. Sintered bodies subjected to Megger test at 1200 V and 50 Hz exhibited good electrical insulation. It was concluded that higher alumina containing batch composition was the ultimate candidate as thermostat insulator, especially in terms of density and compressive strength. [Keywords: Thermostat ceramics, Megger test, Alumina, Steatite]
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