Search results for: GD-DOPED CERIA, ULTRAFAST HIGH-TEMPERATURE SINTERING, MICROSTRUCTURE, CONDUCTIVITY, ELECTROSTRICTION - Bridge of Knowledge

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Search results for: GD-DOPED CERIA, ULTRAFAST HIGH-TEMPERATURE SINTERING, MICROSTRUCTURE, CONDUCTIVITY, ELECTROSTRICTION

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Search results for: GD-DOPED CERIA, ULTRAFAST HIGH-TEMPERATURE SINTERING, MICROSTRUCTURE, CONDUCTIVITY, ELECTROSTRICTION

  • Zespół Inżynierii Biomedycznej

    Inżynieria biomedyczna stanowi nową interdyscyplinarną dziedzinę wiedzy zlokalizowaną na pograniczu nauk technicznych, medycznych i biologicznych. Według opinii WHO (World Health Organization) można ją zaliczyć do głównych (obok inżynierii genetycznej) czynników decydujących o postępie współczesnej medycyny. Rosnące znaczenie kształcenia w zakresie INŻYNIERII BIOMEDYCZNEJ wynika z faktu, że specjaliści tej dyscypliny są potrzebni...

  • Zespół Fizyki Ciała Stałego

    Tematyka badawcza Katedry Fizyki Ciała Stałego obejmuje wytwarzanie i badanie materiałów dla energetyki (m.in. nanostruktury, sensory) o innowacyjnych właściwościach fizyko-chemicznych, tj: * kryształy, polikryształy, ceramika, szkło * materiały objętościowe, cienkie warstwy, nanomateriały * materiały metaliczne, półprzewodnikowe, nadprzewodnikowe, izolatory Tematyka badawcza obejmuje również badania symulacyjne i obliczeniowe...

  • Katedra Technologii Polimerów

    W Katedrze Technologii Polimerów realizowane są prace badawczo-wdrożeniowe, wykonywane ekspertyzy i analizy oraz prowadzone są szkolenia w zakresie technologii polimerów oraz przetwórstwa i recyklingu tworzyw sztucznych. Oferujemy nowe technologie i przeprowadzamy modyfikacje technologii już istniejących.

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Search results for: GD-DOPED CERIA, ULTRAFAST HIGH-TEMPERATURE SINTERING, MICROSTRUCTURE, CONDUCTIVITY, ELECTROSTRICTION

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Search results for: GD-DOPED CERIA, ULTRAFAST HIGH-TEMPERATURE SINTERING, MICROSTRUCTURE, CONDUCTIVITY, ELECTROSTRICTION

  • Electrical conductivity of nanostructured acceptor-doped ceria fabricated by spark plasma sintering (SPS)

    Publication
    • A. Kabir
    • S. Colding-Jørgensen
    • S. Molin
    • V. Esposito

    - MATERIALS LETTERS - Year 2020

    High purity nanoscale powders (~10–15 nm size) of two different compositions of ceria, doped with Gd3+ and Ca2+, have been consolidated by spark plasma sintering (SPS) at different temperatures. Fully-dense samples were observed only at a sintering temperature of 980 °C. The as-sintered samples showed rather fast grain growth with an average grain size below 300 nm. The electrical properties of the samples were evaluated by impedance...

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  • Ultrafast high-temperature sintering (UHS) of cerium oxide-based compound

    Publication

    - Open Ceramics - Year 2024

    Ultrafast high-temperature sintering (UHS) is an innovative sintering technique that can densify ceramics in a few seconds, dramatically reducing the carbon footprint and firing costs. In this work, the feasibility of applying UHS in Gd-doped ceria (GDC) and GDC-Er-stabilized bismuth oxide (ESB) composite powders was investigated. At high UHS currents (22-24 A), a fully dense GDC sample with a large grain size was obtained. Nonetheless,...

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  • Gigantic electro-chemo-mechanical properties of nanostructured praseodymium doped ceria

    Publication
    • V. B. Tinti
    • A. Kabir
    • J. K. Han
    • S. Molin
    • V. Esposito

    - NANOSCALE - Year 2021

    Some oxygen defective fluorites are non-Newnham electrostrictors, i.e., the electromechanical response does not depend on their dielectric properties. Here, we show gigantic electrostriction in nanocrystalline 25 mol% praseodymium doped ceria (PCO) bulk ceramics. The material was fabricated with a fieldassisted spark plasma sintering (SPS) process from high-purity nanoscale PCO powders (<20 nm). The SPS process consolidates the...

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  • Enhanced Mechanical and Electromechanical Properties of Compositionally Complex Zirconia Zr1–x(Gd1/5Pr1/5Nd1/5Sm1/5Y1/5)xO2−δ Ceramics

    Publication

    - ACS Applied Materials & Interfaces - Year 2024

    Compositionally complex oxides (CCOs) or high-entropy oxides (HEOs) are new multi-element oxides with unexplored physical and functional properties. In this work, we report fluorite structure derived compositionally complex zirconia with composition Zr1- x(Gd1/5Pr1/5Nd1/5Sm1/5Y1/5)xO2-δ (x = 0.1 and 0.2) synthesized in solid-state reaction route and sintered via hot pressing at 1350 °C. We explore the evolution of these oxides'...

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  • Electro-chemo-mechanical properties in nanostructured Ca-doped ceria (CDC) by field assisted sintering

    Publication
    • A. Kabir
    • H. Zhang
    • S. Colding-Jørgensen
    • S. Santucci
    • S. Molin
    • V. Esposito

    - SCRIPTA MATERIALIA - Year 2020

    Recent investigations have shown that highly oxygen defective cerium oxides generate non-classical electrostriction that is superior to lead-based ferroelectrics. In this work, we report the effect of field-assisted spark plasma sintering (SPS) on electro-chemo-mechanical properties of calcium doped ceria (CDC). Nanometric powders of Ca.10 nm are rapidly consolidated to form polycrystalline nanostructures with a high degree of...

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