Dielectric Properties of Lithium Fluoride Sintered After High-Pressure Forming

0571806 - ÚFP 2024 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Ctibor, Pavel - Straka, L. - Sedláček, J. … celkem 4 autorů
Dielectric Properties of Lithium Fluoride Sintered After High-Pressure Forming.
Proceedings of International Workshop on Impedance Spectroscopy. Chemnitz: Institute of Electrical and Electronics Engineers Inc., 2022, (2022), s. 95-98. ISBN 979-835031039-9.
[International Workshop on Impedance Spectroscopy, IWIS 2022. Chemnitz (DE), 27.09.2022-30.09.2022]
Institucionální podpora: RVO:61389021
Klíčová slova: High pressure forming * Lithium fluoride * Dielectrics * Low melting point materials
Obor OECD: Materials engineering

The high pressure forming at 300 MPa and room temperature was applied before firing of pure lithium fluoride powder. This material has very low sintering temperature, only about one half of typical oxide-ceramic dielectrics. Despite this fact, the resulting fired bulk was tested as dielectrics and showed very interesting characteristics. The best sample, fired at 750 degrees C and for 8 hours, had relative permittivity 12.1 and loss tangent 0.0006, frequency- and temperature-independent up to at least 150 degrees C. These parameters are comparable with oxide ceramics, fired at temperatures over 1500 degrees C, as for example alumina or YAG.
Trvalý link: https://hdl.handle.net/11104/0342704