Počet záznamů: 1  

Dielectric properties of plasma sprayed silicates subjected to additional annealing

  1. 1.
    0475260 - ÚFP 2018 RIV IR eng J - Článek v odborném periodiku
    Ctibor, Pavel - Sedláček, J. - Nevrlá, Barbara - Neufuss, Karel
    Dielectric properties of plasma sprayed silicates subjected to additional annealing.
    Progress in Color, Colorants and Coatings. Roč. 10, č. 2 (2017), s. 105-114. ISSN 2008-2134. E-ISSN 2383-1790
    Institucionální podpora: RVO:61389021
    Klíčová slova: Annealing * Dielectric properties * Plasma spraying * Silicates * Electrical properties * Insulators
    Obor OECD: Coating and films
    http://pccc.icrc.ac.ir/Articles/1/18/990/

    Several silicate materials were plasma sprayed and characterized by the authors. This work is concerned with selected dielectric properties of
    these deposits. Synthetic mullite and steatite 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 form of plates with a smooth surface. Part of samples was later annealed in air. These samples were tested in the alternative low voltage electric field to measure capacity and loss factor. Volume resistivity was measured in a DC field. It is shown that the relative permittivity of as-sprayed silicates is less stable compared to bulk in the whole studied frequency range. However, thermal annealing modifies the structure much closer to the sintered bulk which is also reflected in dielectric properties. Insulating ability of plasma-sprayed silicates with and without annealing is discussed in consequence with chemical changes and phase changes induced by annealing

    Trvalý link: http://hdl.handle.net/11104/0272728

     
     
Počet záznamů: 1  

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