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 | |
| 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 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
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
}
TY - GEN
T1 - Corrosion resistance of neodymium and dysprosium hydrides
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.
UR - http://www.scopus.com/inward/record.url?scp=85034252269&partnerID=8YFLogxK
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U2 - 10.1063/1.5009853
DO - 10.1063/1.5009853
M3 - Conference contribution
VL - 1899
BT - Prospects of Fundamental Sciences Development, PFSD 2017 - Proceedings of the XIV International Conference of Students and Young Scientists
PB - American Institute of Physics Inc.
ER -