Use of a zirconium alloy coated with an homogeneous polycrystalline diamond layer for a nuclear reactor

0532446 - FZÚ 2021 RIV eng P - Patentový dokument
Škoda, R. - Škarohlíd, J. - Kratochvílová, Irena - Taylor, Andrew - Fendrych, František
Use of a zirconium alloy coated with an homogeneous polycrystalline diamond layer for a nuclear reactor.
2020. Vlastník: České vysoké učení technické v Praze, Fakuta strojní - Fyzikální ústav AV ČR, v. v. i. Datum udělení patentu: 19.08.2020. Číslo patentu: EP3047046
Grant CEP: GA TA ČR TA04020156
Institucionální podpora: RVO:68378271
Klíčová slova: zirconium alloys * polycrystalline diamond layer * anticorrosion protection
Obor OECD: Nuclear physics
https://worldwide.espacenet.com/patent/search/family/051798943/publication/EP3047046A1?q=EP3047046

A layer protecting the surface of zirconium alloys used as materials for nuclear reactors is formed by a homogenous polycrystalline diamond layer prepared by chemical vapor deposition method. This diamond layer is from 100 nm to 50 μm thick and the size of the crystalline cores in the layer ranges from 10 nm to 500 nm. Maximum content of non-diamond carbon is 25 mol%, total content of non-carbon impurities is maximum up to 0.5 mol%, RMS surface roughness of the polycrystalline diamond layer has a value less than 40 nm and thermal conductivity of the layer ranges from 1000 to 1900 W·m−1·K−1.
Coating of the zirconium alloys surface with the described polycrystalline diamond layer serves as a zirconium alloys surface protection against undesirable changes and processes in the nuclear reactor environment.

Priorita CZ305059 - RIV: RIV/68378271:_____/15:00447999
Trvalý link: http://hdl.handle.net/11104/0310936