Corrosion resistance of neodymium and dysprosium hydrides

Natalia Karakchieva, Galina Lyamina, Elena Knyazeva, Victor Sachkov, Irina Kurzina, Alina Pichugina, Alexander Vladimirov, Ludmila Kazantseva, Anna Sachkova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes the methods of obtaining hydrides of rare earth elements such as dysprosium and neodymium. The properties and corrosion resistance of these elements are investigated. A synthesis method of monophasic dysprosium and neodymium dihydrides is presented. Synthesized dihydrides are agglomerates with an average size of 3-50 μm and are formed by crystalline grains of a nanometer size. BET specific surface area, morphology, elemental analyses and composition of samples have been studied. Corrosion stability in aqueous solutions of hydrochloric acid and sodium hydroxide were studied. It was determined that both hydrides undergo hydrolysis in acid and alkaline mediums. Neodymium hydride is more stable to corrosion than dysprosium hydride, which is proved by its longer exposure to aggressive medium to hydrides. The formation of insoluble /poorly soluble products of corrosion can make a significant contribution to the process of powder dissolution.

Original languageEnglish
Title of host publicationProspects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists
PublisherAmerican Institute of Physics Inc.
Volume1899
ISBN (Electronic)9780735415874
DOIs
Publication statusPublished - 3 Nov 2017
Event14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017 - Tomsk, Russian Federation
Duration: 25 Apr 201728 Apr 2017

Conference

Conference14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017
CountryRussian Federation
CityTomsk
Period25.4.1728.4.17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Karakchieva, N., Lyamina, G., Knyazeva, E., Sachkov, V., Kurzina, I., Pichugina, A., Vladimirov, A., Kazantseva, L., & Sachkova, A. (2017). Corrosion resistance of neodymium and dysprosium hydrides. In Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists (Vol. 1899). [030008] American Institute of Physics Inc.. https://doi.org/10.1063/1.5009853