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Formation of Coatings from Accelerated Ions of Fluorinated Fullerene C60(CF3)12статья
Дата последнего поиска статьи во внешних источниках: 17 июля 2024 г.
- Авторы: Pukha V.E., Belmesov A.A., Kabachkov E.N., Nechaev G.V., Lukina I.N., Drozdova E.I., Chernogorova O.P.
- Журнал: Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
- Том: 18
- Номер: 3
- Год издания: 2024
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 690
- Последняя страница: 698
- DOI: 10.1134/s1027451024700320
- Аннотация: The first results of the deposition of coatings from accelerated ions of fluorinated fullerene C60(CF3)12 are presented. The coatings are formed at room temperature on Si substrates from a beam of singly charged ions with an energy of 5 keV, as well as from an ion beam that also contains doubly charged ions and a certain amount of ionized fragments of molecules. The properties and structure of coatings obtained from accelerated ions of fluorinated fullerene are compared with the properties and structure of coatings obtained from accelerated fullerene C60 ions under the same conditions. According to X-ray photoelectron spectroscopy (XPS), fluorinated fullerene coatings contain about 4% fluorine. Investigations of the coatings structure and chemical bonds by X-ray photoelectron spectroscopy and Raman scattering show that the presence of fluorine leads to a decrease in the content of sp3-bonds in the coatings and the formation of graphite-like sp2-structures. Coating hardness (H) and Young’s modulus (E) compared to C60 ion coatings decrease from 36 to 18 GPa and from 245 to 133 GPa, respectively, while the H/E ratio remains the same (~0.14). Tribological tests have shown for all coatings the friction coefficient is close to 0.1. All coatings are also characterized by a very low wear, less than 10–7 mm3/(N m). For coatings obtained from C60(CF3)12 ions, the contact angle is ~76°–78°. In the absence of fluorine, for the coating obtained from C60 ions, it is ~90°.
- Добавил в систему: Кабачков Евгений Николаевич