Powered by OpenAIRE graph
Found an issue? Give us feedback

Микроструктура и трибологические свойства нанокомпозитных покрытий на основе аморфного углерода

Микроструктура и трибологические свойства нанокомпозитных покрытий на основе аморфного углерода

Abstract

Nanocomposite coatings based on amorphous carbon doped with titanium, nickel and chromium have been obtained by magnetron sputtering. Features of the microstructure and phase composition of these coatings are investigated by transmission electron microscopy, scanning electron microscopy and X-ray diffraction. It is shown that the coatings consists of nanosized TiC and NiCr particles embedded in an amorphous carbon matrix. The deposition of these coatings on a titanium alloy substrate leads to a 7-fold increase in microhardness (up to 14 GPa) and a more than 2-fold decrease in the friction coefficient (down to μ < 0.2). The physical causes of the hardness increase and friction coefficient reduction are explored. The modification of the phase composition of nanocomposite coatings based on amorphous carbon and their deposition onto titanium alloy products are discussed.

Методом магнетронного осаждения получены нанокомпозитные покрытия на основе аморфного углерода, легированного титаном, никелем и хромом. Методами просвечивающей и растровой электронной микроскопии, рентгеноструктурного фазового анализа исследованы особенности микроструктуры и фазового состава указанных покрытий. Показано, что структура покрытий представлена наноразмерными частицами TiC и NiCr, находящимися в аморфной углеродной матрице. Рассматриваемые покрытия на подложке из титанового сплава повышают микротвердость в ~7 раз (до 14 ГПа) и снижают более чем в 2 раза (до μ < 0.2) коэффициент трения. Обсуждаются физические причины повышения твердости и снижения коэффициента трения, а также перспективы модифицирования фазового состава нанокомпозитных покрытий на основе аморфного углерода и возможности использования полученных покрытий на изделиях из титановых сплавов.

Keywords

ИОННО-ПЛАЗМЕННЫЙ СИНТЕЗ, НАНОКОМПОЗИТЫ, АМОРФНЫЙ УГЛЕРОД, НАНОКРИСТАЛЛИЧЕСКИЕ ЧАСТИЦЫ, МИКРОТВЕРДОСТЬ, АНТИФРИКЦИОННЫЕ ПОКРЫТИЯ

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold