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Characterization of less common nitrides as potential permeation barriers
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SYSNO ASEP 0500425 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterization of less common nitrides as potential permeation barriers Author(s) Matějíček, Jiří (UFP-V) RID, ORCID
Veverka, Jakub (UFP-V) ORCID
Nemanič, V. (SI)
Cvrček, L. (CZ)
Lukáč, František (UFP-V) ORCID
Havránek, Vladimír (UJF-V) RID, SAI, ORCID
Illková, Ksenia (UFP-V)Number of authors 7 Source Title Fusion Engineering and Design. - : Elsevier - ISSN 0920-3796
Roč. 139, February 2019 (2019), s. 74-80Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords Adhesion ; Hydrogen permeation barriers ; Nitrides ; Permeation measurement ; Physical vapor deposition ; Residual stress Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects GA14-12837S GA ČR - Czech Science Foundation (CSF) LM2015056 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 ; UJF-V - RVO:61389005 UT WOS 000458939100010 EID SCOPUS 85059446361 DOI 10.1016/j.fusengdes.2018.12.056 Annotation In a fusion reactor, the transport of hydrogen isotopes (primarily tritium) has to be controlled, from the point of view of fuel balance and retention in the reactor components, which can result in material degradation and spreading of radioactivity. To suppress this, tritium permeation barriers are developed. Suitable materials for the permeation barriers are those with low hydrogen isotope permeability - primarily ceramic materials, such as oxides, carbides and nitrides. In this study, coatings of six less common nitrides prepared by physical vapor deposition – namely AlCrN, CrN, Cr2N, CrWN, WN and ZrN – were investigated. Besides basic characterization (elemental and phase composition, surface morphology and coating thickness), hydrogen permeation, adhesion, residual stress and thermal expansion were evaluated. All coatings were dense, crack-free and well adherent. The permeation reduction factor which was determined at 400 °C and 1 bar ranged from ˜102 to ˜5 × 103, the best performance being achieved by the ZrN coating. As these materials seem not to be investigated as hydrogen permeation barriers, they have a very high potential to be further improved Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S0920379618308214?via%3Dihub
Number of the records: 1