EXPERIMENTS ON THE INTERACTION OF HYDROGEN ISOTOPES WITH LITHIUM CERAMICS OF DIFFERENT GRADES

This paper describes the results of experiments on the interaction of hydrogen isotopes with lithium ceramics of different grades. The studies were carried out in two stages: a cycle of work on saturation of samples in a deuterium medium was conducted at a facility for studying the interaction of gases with materials (CorrSiC’a)) based on an industrial highvacuum tube furnace GSL-1600, at temperatures of 300 °C, 500 °C, 700 °C; hermal desorption (TDS) experiments at a facility, where the sample is heated by a non-contact method (induction heating) at a rate of 2 K/s and 10 K/s, at a pressure of residual gases in the installation chamber ~10−4 Pa. The values of the activation energy of deuterium gas release from lithium ceramics of different grades are obtained.

1. T. Tanabe, Tritium: Fuel of Fusion Reactors, Springer, 2017. – P. 273–294;

2. R. Lässer, A. Antipenkov, N. Bekris et al. “Tritium in fusion: R&D in the EU” // Fusion Science and Technology 54(1):39–44 July 2008. https://doi.org/10.13182/FST08-A1761

3. L.M. Giancarli et al. Overview of the ITER TBM Program. Fusion Engineering and Design, 87 (2012) 395–402.

4. K. Tsuchiya, H. Kawamura, K. Fuchinoue, H. Sawada, K. Watarumi, Fabrication development and preliminary characterization of Li2TiO pebbles by wet process // J. Nucl. Mater. 258–263 (1998) 1895–1990.

5. Chikhray Y., Kulsartov T., Shestakov V., Kenzhina I., Askerbekov S., Sumita J., Ueta S., Shibata T., Sakaba N., Abdullin Kh., Nemkayeva R. Corrosion test of HTGR graphite with SiC coating // International Topical Meeting on High Temperature Reactor Technology (HTR 2016): ANS Proceedings, Las Vegas, NV, November 6-10, 2016. – Vol. 1. – P. 572–577.

6. Gabdullin M.T. i dr. Sposob provedeniya termodesorbtsionnykh issledovaniy gazovydeleniya vodoroda iz metallicheskikh obraztsov maloy massy / Gabdullin M.T., Kul'sartov T.V., Zaurbekova Zh.A., Chikhray E.V. // Patent RK na poleznuyu model' No. 5335, opubl. 28.08.2020.

7. Bekman I.N. Eksperimental'nye metody izucheniya diffuzii radioaktivnykh gazov v tverdykh telakh, 7 Sorbtsionyy metod // Radiokhimiya, 1983. No. 2. – P. 252–261.

8. Redhead P. Thermal desorption of gases // Vacuum, 1962. – Vol. 12, No. 8. – P. 203–211.

9. Begrambekov L.B., Kurnaev V.A., Pisarev A.A. Metod opredeleniya energii aktivatsii dlya protsessa diffuzii gaza, vnedrennogo v metall // Atomnaya energiya, 1971. – Tom 31, issue 6. – P. 625–626.

10. Pisarev A.A., Bandurko V.V., Tsyplakov V.N. Opredelenie energii aktivizatsii gazovydeleniya ionno-vnedrennogo deyteriya iz nerzhaveyushchey stali // Atomnaya energiya, 1987, – Tom 63, – P. 28–30.

11. Gabis I.E., Kompaniets T.I, Kurdyumov A.A. Poverkhnostnye protsessy i vodorodopronitsaemost' metallov // Vzaimodeystvie vodoroda s metallami / pod red. A.P. Zakharova. – Moscow: Nauka, 1987. – P. 177–208.

12. Vudraf D., Delchar T. // Sovremennye metody issledovaniya poverkhnosti. Moscow: Mir, 1989. 568 p.