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Dielectric properties of plasma sprayed silicates
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SYSNO ASEP 0025679 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Dielectric properties of plasma sprayed silicates Title Dielektrické vlastnosti plazmových nástřiků silikátů Author(s) Ctibor, Pavel (UFP-V) RID, ORCID
Sedláček, J. (CZ)
Neufuss, Karel (UFP-V) RID
Dubský, Jiří (UFP-V) RID
Chráska, Pavel (UFP-V) RIDSource Title Ceramics International. - : Elsevier - ISSN 0272-8842
-, č. 31 (2005), s. 315-321Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords Optical microscopy ; electrical properties ; silicates ; insulators ; plasma spraying Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass R&D Projects GA202/03/0708 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation Several silicate materials were plasma sprayed and characterized by the authors in recent years from the point of view of their sprayability, chemical and phase compositions, microstructure and mechanical as well as thermal properties. Present work is concerned with selected dielectric properties of these deposits.Synthetic mullite, steatite and spodumene as well as natural olivine-forsterite were plasma sprayed using the water-stabilized plasma system (WSP®). The deposits were striped-out, ground and polished to produce samples in a shape of planparallel plates with a smooth surface. These samples - in principle monoblock capacitors - were then tested in the alternative low voltage electric field to measure capacity and loss factor in the frequency range from 200Hz to 1MHz. Relative permittivity was calculated from the measured capacity. Volume resistivity was measured in the direct electric field. In addition dielectric strength of steatite was measured at 50Hz AC. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2006
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