THIN NITRIDE LAYERS AS PERMEATION BARRIERS

Authors

  • Jakub Veverka Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, Praha 1, Czech Republic Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, Praha 8, Czech Republic
  • Jiri Matejicek Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, Praha 8, Czech Republic
  • Frantisek Lukac Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, Praha 8, Czech Republic
  • David Pospisil Technical University of Liberec, Studentska 1402/2, Liberec I, Czech Republic
  • Ladislav Cvrcek Department of Materials Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Karlovo namesti 13, Praha 2, Czech Republic
  • Vincenc Nemanic Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia

DOI:

https://doi.org/10.14311/APP.2018.17.0024

Keywords:

permeation barriers, nitride layers, PVD coating, permeation measurement

Abstract

Permeation barriers represent one of the crucial fields in materials development for thermonuclear fusion. Primary objective of the barriers is to suppress the permeation of hydrogen isotopes (mainly tritium) from future thermonuclear fusion facilities. Secondary objective is to reduce hydrogen retention in structural materials, potentially also improving their corrosion resistance. Expected reactor conditions put high demands on the material, as well as on the final barrier quality. Key properties are tritium permeation reduction, absence of defects (especially cracks), high-temperature stability and corrosion resistance, and compatibility with structural materials (mostly ferritic-martensitic steels). Regarding industrial scale production, ability of the deposition method to coat large complex surfaces is desirable. Thin nitride layers, identified as promising permeation barriers, were prepared by diffusion-based nitridation and physical vapour deposition (PVD) and characterized.

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Published

2018-06-26

Issue

Vol. 17 (2018): 7th STUDENT SCIENTIFIC CONFERENCE ON SOLID STATE PHYSICS AND PHYSICS OF MATERIALS

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Articles

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