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Structure and electrical properties of yttrium oxide sprayed by plasma torches from powders and suspensions

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00362786" target="_blank" >RIV/68407700:21230/22:00362786 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/61389021:_____/22:00555222

  • Výsledek na webu

    <a href="https://doi.org/10.1016/j.ceramint.2021.11.291" target="_blank" >https://doi.org/10.1016/j.ceramint.2021.11.291</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.ceramint.2021.11.291" target="_blank" >10.1016/j.ceramint.2021.11.291</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Structure and electrical properties of yttrium oxide sprayed by plasma torches from powders and suspensions

  • Popis výsledku v původním jazyce

    Yttrium oxide was sprayed by a plasma torch using a coarse thermal spray powder, which must be in size range of tens of micrometers to ensure good penetration into the plasma stream. Thick coatings on steel substrates were produced with two sprays systems facilitating gas stabilized plasma (GSP) and hybrid water-argon stabilized plasma (WSP-H) techniques. Additionally, an ultra-fine yttrium oxide powder was sprayed from a suspension. Hybrid water-argon stabilized plasma system was used for this purpose. Markedly thinner compact coatings were produced this way. All three sorts of plasma sprayed deposits were studied by the same methods. Dielectric properties were studied in a broad range of frequencies and temperatures. The microstructure aspects as well as crystallite size were analyzed and discussed in relation to electrical properties. All coatings exhibited stable dielectric parameters versus changing frequency and temperature, comparable with literature values for various samples. Concerning sintered bulks, and especially their thermal stability of capacitance, the plasma sprayed coatings were slightly worse. However due to shape and size variability of the plasma spraying are yttria coatings prospective for technical applications.

  • Název v anglickém jazyce

    Structure and electrical properties of yttrium oxide sprayed by plasma torches from powders and suspensions

  • Popis výsledku anglicky

    Yttrium oxide was sprayed by a plasma torch using a coarse thermal spray powder, which must be in size range of tens of micrometers to ensure good penetration into the plasma stream. Thick coatings on steel substrates were produced with two sprays systems facilitating gas stabilized plasma (GSP) and hybrid water-argon stabilized plasma (WSP-H) techniques. Additionally, an ultra-fine yttrium oxide powder was sprayed from a suspension. Hybrid water-argon stabilized plasma system was used for this purpose. Markedly thinner compact coatings were produced this way. All three sorts of plasma sprayed deposits were studied by the same methods. Dielectric properties were studied in a broad range of frequencies and temperatures. The microstructure aspects as well as crystallite size were analyzed and discussed in relation to electrical properties. All coatings exhibited stable dielectric parameters versus changing frequency and temperature, comparable with literature values for various samples. Concerning sintered bulks, and especially their thermal stability of capacitance, the plasma sprayed coatings were slightly worse. However due to shape and size variability of the plasma spraying are yttria coatings prospective for technical applications.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20501 - Materials engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2022

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Ceramics International

  • ISSN

    0272-8842

  • e-ISSN

    1873-3956

  • Svazek periodika

    48

  • Číslo periodika v rámci svazku

    6

  • Stát vydavatele periodika

    IT - Italská republika

  • Počet stran výsledku

    11

  • Strana od-do

    7464-7474

  • Kód UT WoS článku

    000760311400003

  • EID výsledku v databázi Scopus

    2-s2.0-85120832833