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Оптимизация методов формирования Cu-C покрытий электротехнического назначения

Оптимизация методов формирования Cu-C покрытий электротехнического назначения

Abstract

На основании спектров комбинационного рассеяния проведен сравнительный анализ и оптимизация методов формирования медь-углеродных (Cu-C) покрытий для производства твердых и электропроводящих композиционных материалов. В частности, исследованы методы дугового испарения (в постоянном и импульсном режимах, а также их одновременное использование) и высокомощного импульсного магнетронного распыления. Отмечено, что варьирование параметров разряда в каждом из этих методов позволяет изменять структурно-фазовый состав углеродной матрицы, а именно – соотношение концентраций sp2- и sp3 -гибридизированных атомов углерода, что в конечном итоге определяет физико-химические свойства покрытий. Показано, что минимальные размеры кластеров, слияние которых формирует углеродные частицы, характерны для покрытий, осажденных методом импульсного испарения композиционного медь-углеродного катода, при этом размер кластера равен 2,5 нм. Максимальные размеры углеродных кластеров установлены для метода высокоимпульсного магнетронного распыления при частоте 5 кГц и составляют 7,8 нм. Based on Raman scattering spectra, a comparative analysis and optimization of methods for forming copper-carbon (Cu-C) coatings for the production of solid and electrically conductive composite materials were conducted. Specifically, arc evaporation methods (in both continuous and pulsed modes, as well as their simultaneous use) and high-power pulsed magnetron sputtering were studied. It was noted that varying the discharge parameters in each of these methods allows for the modification of the structural-phase composition of the carbon matrix, namely, the ratio of sp²- and sp³- hybridized carbon atoms, which ultimately determines the physicochemical properties of the coatings. It was shown that the smallest cluster sizes, whose merging forms carbon particles, are characteristic of coatings deposited by the pulsed evaporation of a composite copper-carbon cathode, with a cluster size of 2.5 nm. The largest carbon cluster sizes were observed for the high-power pulsed magnetron sputtering method at a frequency of 5 kHz, measuring 7.8 nm.

Keywords

Structural-phase composition, Arc evaporation, Композиционные покрытия, Магнетронное распыление, Структурно-фазовый состав, Composite coatings, Дуговое испарение, Magnetron sputtering

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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
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