High temperature oxidation of polycrystalline diamond coated zirconium alloy

0468814 - FZÚ 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Škarohlíd, J. - Škoda, R. - Kratochvílová, Irena
High temperature oxidation of polycrystalline diamond coated zirconium alloy.
Proceedings of the 2016 24th International Conference on Nuclear Engineering ICONE24. New York: ASME, 2016, s. 1-4, č. článku V005T15A042. ISBN 978-0-7918-5005-3.
[International Conference on Nuclear Engineering /24./. Charlotte (US), 26.06.2016-30.06.2016]
Institucionální podpora: RVO:68378271
Klíčová slova: diamonds * oxidation * zirconium alloys * high temperature
Kód oboru RIV: JI - Kompozitní materiály

Polycrystalline diamond coating is a promising possibility for prevention, or reduction of high temperature oxidation of zirconium alloys and decrease corrosion rate of zirconium alloy during standard operation. Zirconium alloys are widely used as cladding and construction material in almost all types of nuclear reactors, where usually creates a barrier between nuclear fuel and cooling water in the primary circuit. Hydrogen and considerable amount of heat is released during steam oxidation that may occur in an eventual accident. In this paper zirconium alloy was covered by polycrystalline diamond layer using Plasma Enhanced Linear Antennas Microwave Chemical Vapor Deposition system reactor. X-Ray Diffraction and Raman spectroscopy measurements confirmed coverage of the surface area with crystalline and amorphous carbon layer. Characterizations (Raman spectroscopy) were done for zirconium alloy covered with polycrystalline diamond layer before and after high temperature steam exposure.
Trvalý link: http://hdl.handle.net/11104/0266636