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Phase stabilization in plasma sprayed BaTiO3
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SYSNO ASEP 0392140 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Phase stabilization in plasma sprayed BaTiO3 Author(s) Ctibor, Pavel (UFP-V) RID, ORCID
Seiner, Hanuš (UT-L) RID, ORCID
Sedláček, J. (CZ)
Pala, Zdeněk (UFP-V) RID
Vaněk, Přemysl (FZU-D) RID, ORCIDNumber of authors 5 Source Title Ceramics International. - : Elsevier - ISSN 0272-8842
Roč. 39, č. 5 (2013), s. 5039-5048Number of pages 10 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords Spectroscopy ; BaTiO3 ; Plasma spraying ; Spark plasma sintering Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass Subject RIV - cooperation Institute of Thermomechanics - Thermodynamics
Institute of Physics - Ceramics, Fire-Resistant Materials and GlassR&D Projects GA101/09/0702 GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 ; UT-L - RVO:61388998 ; FZU-D - RVO:68378271 UT WOS 000318577600039 DOI 10.1016/j.ceramint.2012.11.102 Annotation This paper presents a comparison of properties of BaTiO3 ceramics prepared by two different production methods: gas-stabilized plasma spraying (GSP) and spark plasma sintering (SPS). Samples of both materials were evaluated by various techniques, the goal being to detect the Curie temperature of the ferroelectric transformation between the tetragonal and the cubic phase. All tests, resonant ultrasound spectroscopy, dielectric measurements, differential scanning calorimetry and temperature-resolved X-ray diffraction (XRD), used in combination, proved the absence of this transformation in the case of GSP coating up to 500 °C. Similarly, the tetragonal-to-orthorhombic transition temperature is shifted downwards, this transition probably taking place in a small fraction of the volume of coating. The SPS samples exhibit several anomalies, such as a strong anisotropy of relative permittivity, but their phase transformations were detected in the usual temperature ranges Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2014
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