Preparation of FeCo/C-N and FeNi/C-N Nanocomposites from Acrylamide Co-Crystallizates and Their Use as Lubricant Additives

Uflyand, I.E.; Burlakova, V.E.; Drogan, E.G.; Zabiyaka, I.Y.; Kydralieva, K.A.; Kugabaeva, G.D.; Dzhardimalieva, G.I.

Авторы: Uflyand Igor E., Burlakova Victoria E., Drogan Ekaterina G., Zabiyaka Igor Yu, Kydralieva Kamila A., Kugabaeva Gulsara D., Dzhardimalieva Gulzhian I.
Журнал: MICROMACHINES
Том: 13
Номер: 11
Год издания: 2022
Первая страница: 1984
DOI: 10.3390/mi13111984
Аннотация: FeCo and FeNi nanoalloy particles encapsulated in a nitrogen-doped carbonized shell (FeCo/C-N and FeNi/C-N) were synthesized by thermolysis at 400 degrees C of polyacrylamide complexes after frontal polymerization of co-crystallizate of Fe and Co or Ni nitrates and acrylamide. During the thermolysis of polyacrylamide complexes in a self-generated atmosphere, Co(II) or Ni(II) and Fe(III) cations are reduced to form FeCo and FeNi nanoalloy particles, while polyacrylamide simultaneously forms a nitrogen-doped carbon shell layer. This unique architecture provides high chemical and thermal stability of the resulting nanocomposites. The average crystallite size of FeCo and FeNi nanoparticles is 10 and 12 nm, respectively. The nanocomposites were studied by X-ray diffraction, atomic force microscopy, scanning electron microscopy, and high-resolution transmission electron microscopy. The nanocomposites have been tested as antifriction and antiwear additives in lubricating oils. The optimal concentrations of nanoparticles were determined, at which the antifriction and antiwear properties of the lubricant manifest themselves in the best possible way.
Добавил в систему: Кугабаева Гульсара Дамировна

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Preparation of FeCo/C-N and FeNi/C-N Nanocomposites from Acrylamide Co-Crystallizates and Their Use as Lubricant Additivesстатья