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Author Rani, R. ♦ Kumar, N. ♦ Lin, I.-Nan
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NANOSCIENCE AND NANOTECHNOLOGY ♦ CHEMICAL VAPOR DEPOSITION ♦ CORRELATIONS ♦ CRYSTALS ♦ DIAMONDS ♦ ENERGY EFFICIENCY ♦ FILMS ♦ GRAIN BOUNDARIES ♦ GRAIN SIZE ♦ GRAPHITE ♦ INTERFACES ♦ MICROWAVE RADIATION ♦ NANOSTRUCTURES ♦ NANOWIRES ♦ PLASMA ♦ ROUGHNESS ♦ STABILITY ♦ STRESSES ♦ SURFACES ♦ WEAR RESISTANCE
Abstract Nanostructured diamond films are having numerous unique properties including superior tribological behavior which is promising for enhancing energy efficiency and life time of the sliding devices. High wear resistance is the principal criterion for the smooth functioning of any sliding device. Such properties are achievable by tailoring the grain size and grain boundary volume fraction in nanodiamond film. Ultra-nanocrystalline diamond (UNCD) film was attainable using optimized gas plasma condition in a microwave plasma enhanced chemical vapor deposition (MPECVD) system. Crystalline phase of ultra-nanodiamond grains with matrix phase of amorphous carbon and short range ordered graphite are encapsulated in nanowire shaped morphology. Film showed ultra-high wear resistance and frictional stability in micro-tribological contact conditions. The negligible wear of film at the beginning of the tribological contact was later transformed into the wearless regime for prolonged sliding cycles. Both surface roughness and high contact stress were the main reasons of wear at the beginning of sliding cycles. However, the interface gets smoothened due to continuous sliding, finally leaded to the wearless regime.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-23
Publisher Place United States
Volume Number 1731
Issue Number 1


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