THIN NITRIDE LAYERS AS PERMEATION BARRIERS

Acta Polytechnica CTU Proceedings

Ladislav Cvrcek¹  Jakub Veverka²  Jiri Matejicek³  Frantisek Lukac³  Vincenc Nemanic⁴  David Pospisil⁵ 

[1] Department of Materials Engineering, Faculty of Mechanical Engineering, Czech Technical University inPrague, Karlovo namesti 13, Praha 2, Czech Republic;Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, Praha 1, Czech RepublicInstitute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, Praha 8, Czech Republic;Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, Praha 8, Czech Republic;Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia;Technical University of Liberec, Studentska 1402/2, Liberec I, Czech Republic;

关键词: permeation barriers, nitride layers, PVD coating, permeation measurement;   

DOI  :  10.14311/APP.2018.17.0024

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown