Copper thin films deposited under different power delivery modes and magnetron configurations: A comparative study

Velicu, Ioana–Laura; Tiron, Vasile; Rusu, Bogdan-George; Popa, G.

doi:10.1016/j.surfcoat.2016.11.001

Cited by 26 publications

(12 citation statements)

References 26 publications

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“…1b and c. Such result could be explained by the fact that at 400 • C temperature copper atoms start migrating into graphite pores, eventually filling them [2]. Thus, that process eliminates part of microcracks, and the surface is smoother than in the two previous cases (Fig.…”

Section: The Course Of the Experimentsmentioning

confidence: 79%

“…The increase in the electric conductivity of thermally treated composites is determined by the mechanisms of copper migration and diffusion into graphite surface pores and layers [1][2]. The copper in the surface layers of a composite has lower specific electric resistance than graphite.…”

Section: Resultsmentioning

confidence: 99%

“…Such result can be explained by the fact that under thermal impact part of copper migrates into graphite pores and micro formations, thus filling them, and also reducing the specific surface area. Another factor affecting the change in the measured specific surface area could be the diffusion between copper and graphite layers which (according to the literature) starts at 400 • C [1][2][3][4]. Figure 4 presents the analysis of the surface porosity of the copper-graphite composite, indicating the diameter of pores occupying respective surface area.…”

Section: The Course Of the Experimentsmentioning

confidence: 92%

“…In addition, graphite has good self-lubricating properties. As a result, graphite composites are often used in the production of hard disk drives, moving devices in mechanical machinery, cutting tools, and elsewhere [1][2][3]. The insertion of additional materials (such as copper, titanium, aluminum) into carbon can significantly improve specific carbon properties: plasticity, electric conductivity, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Scientific literature provides significant amount of data about diffusion mechanisms of different metals and graphite. There is, however, a lack of information about the migration mechanisms of various materials (for example, metals) into pores [1][2][3]5].…”

Section: Introductionmentioning

confidence: 99%

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The Study of the Thermal Treatment on the Surface Microstructure and Electrical Conductivity of the Copper/Graphite Composites

et al. 2019

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This research is aimed to analyze the effect of the migration mechanism of the copper layer deposited on the graphite surface using magnetron sputtering, with the influence on the microrelief structure and electrical properties of a copper-graphite composite. The research attempted to estimate the effect of copper migration on the microporosity structure, electrical conductivity, and specific surface area of a copper-graphite composite. The magnetron evaporation method was used to form 200 nm layers on graphite plate surface. The dimensions of irregularly shaped micro formations on the surface vary within the limits of 1-10 µm. By contrast, the measurements of Brunauer-Emmett-Teller specific surface area have demonstrated that the specific surface area of copper-graphite composites heated at 400 • C temperature is about 3 times smaller compared to the unheated ones, reaching about 6 m 2 /g. Copper-graphite composites had the highest electric conductivity of 5 S when composites were heat treated at temperature of 200 • C.

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Section: The Course Of the Experimentsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%