Název:	Small-and wide-angle X-ray scattering (SAXS/WAXS) in materials science
Autoři:	Bělský, Petr
Citace zdrojového dokumentu:	JIRKOVÁ, Hana ed.; JENÍČEK, Štepán ed. Proceedings PING 2019: modern trends in material engineering: 10.-13.09.2019, Pilsen. 1. vyd. Plzeň: University of West Bohemia, 2019, s. 96. ISBN 978-80-261-0879-5.
Datum vydání:	2019
Nakladatel:	University of West Bohemia
Typ dokumentu:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/35264
ISBN:	978-80-261-0879-5
Klíčová slova:	SAXS;WAXS;věda o materiálech
Klíčová slova v dalším jazyce:	SAXS;WAXS;materials science
Abstrakt v dalším jazyce:	Small-angle X-ray scattering (SAXS) is a well-established characterization method for microstructure (in particular, nanostructure) investigations in various materials. It examines electron density differences to provide information about structural inhomogeneities, particles or pores with size from the near atomic scale (~ 1 nm) to the scale of tens or at maximum around 200 nm in case of desktop SAXS instruments or up to micron scale (at maximum ~15 um) in case of synchrotron SAXS instruments. Wide-angle X-ray scattering (WAXS) experimental setup is usually similar to that of SAXS – the difference is that the X-ray scattering/diffraction under higher scattering angles is examined. WAXS gives information about sub-nanometer-scale structure of material, i.e., crystallinity/amorphousness. At New Technologies – Research Centre (NTC) of the University of West Bohemia, SAXSess instrument by Anton Paar (Austria) is available in a configuration enabling to investigate nanostructures on the scale from approximately 1 to 25 nm. The SAXS/WAXS method, its possibilities and the applications of SAXS/WAXS in materials science will be introduced in general. Our SAXSess instrument and selected applications for which the method was applied at NTC so far, will be presented. It includes e.g. investigation of nucleation of a new phase in metakaolin, structure analysis of Nafion-based polymer membranes and other membranes for hydrogen fuel cells and vanadium redox batteries, polyvinyl alcoholbased membranes, and analysis of size distribution changes of Pt catalysts in fuel cells after operational tests.
Práva:	© University of West Bohemia
Vyskytuje se v kolekcích:	Proceedings PING 2019: modern trends in material engineering Konferenční příspěvky / Conference Papers (CTM) Proceedings PING 2019: modern trends in material engineering

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