Phase Transformations in Cd–Ni Nanostructured System at Elevated Temperatures Full article
| Journal |
Russian Chemical Bulletin
ISSN: 1066-5285 , E-ISSN: 1573-9171 |
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| Output data | Year: 2019, Volume: 68, Number: 1, Pages: 17-23 Pages count : 7 DOI: 10.1007/s11172-019-2410-x | ||||||
| Tags | cadmium; crystal structure; intermetallide; nanostructured powders; nickel; phase composition; solid solution | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Siberian Branch of the Russian Academy of Sciences |
Abstract:
Using X-ray diffraction (both in vacuum and in air), derivatomass-spectrometry and thermo-programmed oxidation, phase transformations in nanostructured Cd–Ni system occurring while heating up 720 °C were described. These metal powders were obtained by joint reduction from aqueous solutions of salts with hydrazine. When study their composition, earlier unknown phases were detected (intermetallide CdNi 3 and solid solution Cdx Ni1–x with face centered cubic structure) and among the known intermetallides (Cd 5 Ni and CdNi), only Cd 5 Ni was found. As a consequence, phase transformations in the obtained nanostructured powders were remarkably different from those present on the Cd–Ni phase diagram. The intermediates and FCC phase decompose independently with formation of individual initial components (Cd and Ni) without intermediate product. At relatively high Cd concentration in the system, intermediate CdNi3 phase formation from Cd 5 Ni and CdxNi1–x phases, which are polar opposites in composition, is possible. The decomposition temperatures of Cd 5 Ni and melting point of Cd in the nanostructured state were lower than those specified by the phase diagram by 170 and 70 °C, respectively, which well corresponded to the concept of effective (high) temperatures attributed to the nanostructured systems due to the energy saturation of the con stituent nanocrystallites. © 2019, Springer Science+Business Media, Inc.
Cite:
Pugachev V.M.
, Zakharov Y.A.
, Valnyukova A.S.
, Popova A.N.
, Khitsova L.M.
, Yashnik S.A.
, Ismagilov Z.R.
Phase Transformations in Cd–Ni Nanostructured System at Elevated Temperatures
Russian Chemical Bulletin. 2019. V.68. N1. P.17-23. DOI: 10.1007/s11172-019-2410-x WOS Scopus РИНЦ ANCAN OpenAlex
Phase Transformations in Cd–Ni Nanostructured System at Elevated Temperatures
Russian Chemical Bulletin. 2019. V.68. N1. P.17-23. DOI: 10.1007/s11172-019-2410-x WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Пугачев В.М.
, Захаров Ю.А.
, Вальнюкова А.С.
, Попова А.Н.
, Хицова Л.М.
, Яшник С.А.
, Исмагилов З.Р.
Трансформации фазовых составов в наноструктурированной системе Cd-Ni при повышенных температурах
Известия Академии наук. Серия химическая. 2019. №1. С.17-23. RSCI РИНЦ
Трансформации фазовых составов в наноструктурированной системе Cd-Ni при повышенных температурах
Известия Академии наук. Серия химическая. 2019. №1. С.17-23. RSCI РИНЦ
Dates:
| Submitted: | Oct 12, 2017 |
| Accepted: | Sep 19, 2018 |
| Published print: | Jan 1, 2019 |
| Published online: | Apr 13, 2019 |
Identifiers:
| Web of science: | WOS:000464854400003 |
| Scopus: | 2-s2.0-85064436629 |
| Elibrary: | 38939985 |
| Chemical Abstracts: | 2019:860317 |
| Chemical Abstracts (print): | 171:288677 |
| OpenAlex: | W2937380753 |