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您的检索式：作者名="OSMAN Eryilmaz"
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| 1 | Achieving superlubricity in DLC films by controlling bulk, surface, and tribochemistry显示文摘Superlubricity refers to a sliding regime in which contacting surfaces move over one another without generating much adhesion or friction[1].From a practical application point of view,this will be the most ideal tribological situation for many moving mechanical systems mainly because friction consumes large amounts of energy and causes greenhouse gas emissions[2].Superlubric sliding can also improve performance and durability of these systems.In this paper,we attempt to provide an overview of how controlled or targeted bulk,surface,or tribochemistry can lead to superlubricity in diamond-like carbon(DLC)films.Specifically,we show that how providing hydrogen into bulk and near surface regions as well as to sliding contact interfaces of DLC films can lead to super-low friction and wear.Incorporation of hydrogen into bulk DLC or near surface regions can be done during deposition or through hydrogen plasma treatment after the deposition.Hydrogen can also be fed into the sliding contact interfaces of DLCs during tribological testing to reduce friction.Due to favorable tribochemical interactions,these interfaces become very rich in hydrogen and thus provide super-low friction after a brief run-in period.Regardless of the method used,when sliding surfaces of DLC films are enriched in hydrogen,they then provide some of the lowest friction coefficients(i.e.,down to 0.001).Time-of-flight secondary ion mass spectrometer(TOF-SIMS)is used to gather evidence on the extent and nature of tribochemical interactions with hydrogen.Based on the tribological and surface analytical findings,we provide a mechanistic model for the critical role of hydrogen on superlubricity of DLC films. | Ali ERDEMIR Osman ERYILMAZ | 2014 | Friction2014，2，2： | 22 |
| 2 | Influence of tribofilm on superlubricity of highly-hydrogenated amorphous carbon films in inert gaseous environments显示文摘In this study,we mainly focus on the structural morphology and inter-atomic bonding state of tribofilms resulting from a highly-hydrogenated amorphous carbon(a-C:H) film in order to ascertain the underlying mechanisms for its superlubric behavior(i.e.,less than 0.01 friction coefficient).Specifically,we achieved superlubricity(i.e.,friction coefficients of down to 0.003) with this film in dry nitrogen and argon atmospheres especially when the tribo-pair is made of an a-C:H coated Si disk sliding against an a-C:H coated steel ball,while the a-C:H coated disk against uncoated ball does not provide superlubricity.We also found that the state of superlubricity is more stable in argon than in nitrogen and the formation of a smooth and uniformly-thick carbonaceous tribofilm appears to be one of the key factors for the realization of such superlubricity.Besides,the interfacial morphology of sliding test pairs and the atomic-scale bond structure of the carbon-based tribofilms also play an important role in the observed superlubric behavior of a-C:H films.Using Raman spectroscopy and high resolution transmission electron microscopy,we have compared the structural differences of the tribofilms produced on bare and a-C:H coated steel balls.For the a-C:H coated ball as mating material which provided superlow friction in argon,structural morphology of the tribofilm was similar or comparable to that of the original a-C:H coating;while for the bare steel ball,the sp^2-bonded C fraction in the tribofilm increased and a fingerprint-like nanocrystalline structure was detected by high resolution transmission electron microscopy(HRTEM).We also calculated the shear stresses for different tribofilms,and established a relationship between the magnitude of the shear stresses and the extent of sp^3-sp^2 phase transformation. | LIU ShuWei ZHANG ChenHui OSMAN Eryilmaz CHEN XinChun MA TianBao HU YanZhong LUO JianBin ALI Erdemir | 2016 | Science China(Technological Sciences)2016，59，12： | 2 |
| 3 | Analysis of plastic deformation in diamond like carbon films–steel substrate system with tribological tests显示文摘 | Qunfeng Zeng Osman Eryilmaz Ali Erdemir | 2011 | Thin Solid Films2011，，10： | 1 |
| 4 | Percutaneous Treatment of Abdominal Hydatid Cysts with Hypertonic Saline and Alcohol: An Experimental Study in Sheep显示文摘 | OKAN AKHAN ALP DINCER AYTAC G?K?Z ISKENDER SAYEK SAMIM HAVLIO&OV0435 LU OSMAN ABBASO&OV0435 LU MUZAFFER ERYILMAZ AYTEKIN BESIM IZETTIN BARIS | 1993 | Investigative Radiology1993，，2： | 1 |
| 5 | Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation显示文摘 | Kenneth Holmberg Helena Ronkainen Anssi Laukkanen Kim Wallin Ali Erdemir Osman Eryilmaz | 2007 | Wear2007，，9： | 1 |
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