Diamond-like/graphite-like carbon composite films deposited by high-power impulse magnetron sputteringShow others and affiliations
2020 (English)In: Diamond and related materials, ISSN 0925-9635, E-ISSN 1879-0062, Vol. 106, article id 107818Article in journal (Refereed) Published
Abstract [en]
Diamond-like carbon (DLC)/graphite-like carbon (GLC) composite films were prepared with high-power impulse magnetron sputtering (HiPIMS) using a mixture of Ar and Ne as the sputtering gas. The effect of the Ne fraction in the sputtering gas on the surface morphology, carbon bonding structure, microstructure, mechanical properties, residual stress, and tribological performance of the deposited films were characterized using laser scanning confocal microscopy, Raman spectroscopy, nano-indentation, residual stress tester, and friction and wear testing using a ball-on- plate tribometer, respectively. The films have a composite surface structure consisting of sp(2)-rich GLC microparticles embedded in an sp(3)-rich DLC matrix. Both components can be controlled to some degree by varying the Ne fraction. Specifically, as the Ne fraction is increased, both the number and size of the GLC microparticles decreases, while the sp(3) content increases. The GLC microparticles in the film can reduce the real contact area in friction testing, decreasing the friction coefficient, while the sp(3)-rich DLC phase enables the high hardness and wear resistance of the films. By adjusting the Ne fraction during the HiPIMS process, DLC/GLC composite films with low friction and high wear resistance can be generated.
Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2020. Vol. 106, article id 107818
Keywords [en]
Diamond-like carbon; Sputtering gas; Graphite-like microparticles; Hardness; Tribology
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:liu:diva-166468DOI: 10.1016/j.diamond.2020.107818ISI: 000536756000011OAI: oai:DiVA.org:liu-166468DiVA, id: diva2:1444147
Note
Funding Agencies|National Natural Science Foundation of ChinaNational Natural Science Foundation of China [51405008, 51901048]; Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2013M3A6B1078874]
2020-06-202020-06-202020-06-20