Now showing items 1-9 of 9

  • Luminescent Er3+doped transparent alumina ceramics 

    Drdlíková, Katarina; Klement, Róbert; Drdlík, Daniel; Spusta, Tomáš; Galusek, Dušan; Maca, Karel (Elsevier, 2017-07-01)
    We report on successful preparation of Er3+doped transparent alumina (0.1–0.17 at.%) exhibiting visible light photoluminescence using wet shaping method and hot isostatic pressing. The effects of dopantamount, type of ...
  • Luminescent Eu3+-doped transparent alumina ceramics with high hardness 

    Drdlíková, Katarina; Klement, Róbert; Hadraba, Hynek; Drdlík, Daniel; Galusek, Dušan; Maca, Karel (Elsevier, 2017-05-17)
    The Eu3+-doped transparent aluminas were prepared by wet shaping technique followed by pressureless sintering and hot isostatic pressing. The effect of dopant amount on microstructure, real in-line transmission (RIT), ...
  • Master Sintering Surface – A Practical Approach to Its Construction and Utilization for Spark Plasma Sintering Prediction 

    Pouchlý, Václav; Maca, Karel; Xiong, Yan; Shen, Zhijian (International Institute for the Science of Sintering, 2012-08-01)
    The sintering is a complex thermally activated process, thus any prediction of sintering behaviour is very welcome not only for industrial purposes. Presented paper shows the possibility of densification prediction based ...
  • A Numerical Investigation on the Electrochemical Behavior of CaO and Al2O3 in the ESR Slags 

    Karimi-Sibaki, Ebrahim; Kharicha, Abdellah; Wu, Menghuai; Ludwig, Andreas; Boháček, Jan (Springer Nature, 2020-06-01)
    Field structures including electromagnetic, concentration of ions, and flow fields in an ESR-like process composed of a graphite crucible containing a molten slag, air, and an iron electrode are computed. Both CaF2-(mass ...
  • Optical, mechanical and fractographic response of transparent alumina ceramics on erbium doping 

    Drdlík, Daniel; Drdlíková, Katarina; Hadraba, Hynek; Maca, Karel (Elsevier, 2017-11-01)
    Alumina ceramics found their utilisation in many applications which can be further extend by attaining functional properties; in our case the transparency obtained through precise processing and photoluminescence due to ...
  • A Practical Approach for the Calculation of the Activation Energy of the Sintering 

    Pouchlý, Václav; Hrubý, Jan; Maca, Karel (International Institute for the Science of Sintering, 2016-12-15)
    Newly developed software for calculation of activation energy (Qs in the following) of sintering using the Wang and Raj model is presented. To demonstrate the practical potential of the software and to evaluate the behaviour ...
  • Processing and properties of luminescent Cr3+ doped transparent alumina ceramics 

    Drdlíková, Katarina; Klement, Róbert; Drdlík, Daniel; Galusek, Dušan; Maca, Karel (Elsevier, 2020-07-01)
    Transparent Cr2O3-doped alumina ceramics were prepared by slip casting, followed by pre-sintering in ambient atmosphere and hot isostatic pressing. The effect of dopant concentration on material properties, including ...
  • Studium slinování nanočásticových keramických materiálů 

    Dobšák, Petr
    Předmětem dizertační práce bylo studium slinování nanočásticových a submikročásticových keramických materiálů na bázi oxidu hlinitého a oxidu zirkoničitého s cílem srovnat kinetiku slinování nanometrových a submikrometrových ...
  • Vliv vysokého napětí na různé materiály v nízkém a vysokém vakuu 

    Šedivý, Matúš
    Prvá časť tejto diplomovej prace obsahuje prehľad základných elektrických vlastností izolačných materiálov a bližšie popisuje materiály, pri ktorých sa zisťovala ich odolnosť voči povrchovému prierazu vo vákuu. Ďalej sa ...