Corrosion resistance of neodymium and dysprosium hydrides

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 language	English
Title of host publication	Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists
Publisher	American Institute of Physics Inc.
Volume	1899
ISBN (Electronic)	9780735415874
DOIs	https://doi.org/10.1063/1.5009853
Publication status	Published - 3 Nov 2017
Event	14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017 - Tomsk, Russian Federation Duration: 25 Apr 2017 → 28 Apr 2017

Conference

Conference	14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017
Country	Russian Federation
City	Tomsk
Period	25.4.17 → 28.4.17

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.5009853

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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

Corrosion resistance of neodymium and dysprosium hydrides. / Karakchieva, Natalia; Lyamina, Galina; Knyazeva, Elena; Sachkov, Victor; Kurzina, Irina; Pichugina, Alina; Vladimirov, Alexander; Kazantseva, Ludmila; Sachkova, Anna.

Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists. Vol. 1899 American Institute of Physics Inc., 2017. 030008.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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., 14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017, Tomsk, Russian Federation, 25.4.17. https://doi.org/10.1063/1.5009853

Karakchieva N, Lyamina G, Knyazeva E, Sachkov V, Kurzina I, Pichugina A et al. 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. American Institute of Physics Inc. 2017. 030008 https://doi.org/10.1063/1.5009853

Karakchieva, Natalia ; Lyamina, Galina ; Knyazeva, Elena ; Sachkov, Victor ; Kurzina, Irina ; Pichugina, Alina ; Vladimirov, Alexander ; Kazantseva, Ludmila ; Sachkova, Anna. / Corrosion resistance of neodymium and dysprosium hydrides. Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists. Vol. 1899 American Institute of Physics Inc., 2017.

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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.",

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AU - Karakchieva, Natalia

AU - Lyamina, Galina

AU - Knyazeva, Elena

AU - Sachkov, Victor

AU - Kurzina, Irina

AU - Pichugina, Alina

AU - Vladimirov, Alexander

AU - Kazantseva, Ludmila

AU - Sachkova, Anna

PY - 2017/11/3

Y1 - 2017/11/3

N2 - 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.

AB - 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.

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