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

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Выдержка

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.

Язык оригиналаАнглийский
Название основной публикацииProspects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists
ИздательAmerican Institute of Physics Inc.
Том1899
ISBN (электронное издание)9780735415874
DOI
СостояниеОпубликовано - 3 ноя 2017
Событие14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017 - Tomsk, Российская Федерация
Продолжительность: 25 апр 201728 апр 2017

Конференция

Конференция14th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2017
СтранаРоссийская Федерация
ГородTomsk
Период25.4.1728.4.17

Отпечаток

dysprosium
neodymium
corrosion resistance
hydrides
dihydrides
corrosion
sodium hydroxides
hydrochloric acid
hydroxides
hydrolysis
dissolving
rare earth elements
aqueous solutions
acids
synthesis
products

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Цитировать

Karakchieva, N., Lyamina, G., Knyazeva, E., Sachkov, V., Kurzina, I., Pichugina, A., ... Sachkova, A. (2017). Corrosion resistance of neodymium and dysprosium hydrides. В Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists (Том 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. Том 1899 American Institute of Physics Inc., 2017. 030008.

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

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. в Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists. том. 1899, 030008, American Institute of Physics Inc., Tomsk, Российская Федерация, 25.4.17. https://doi.org/10.1063/1.5009853
Karakchieva N, Lyamina G, Knyazeva E, Sachkov V, Kurzina I, Pichugina A и соавт. Corrosion resistance of neodymium and dysprosium hydrides. В Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists. Том 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. Том 1899 American Institute of Physics Inc., 2017.
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AU - Lyamina, Galina

AU - Knyazeva, Elena

AU - Sachkov, Victor

AU - Kurzina, Irina

AU - Pichugina, Alina

AU - Vladimirov, Alexander

AU - Kazantseva, Ludmila

AU - Sachkova, Anna

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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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