典型文献
Mechanism of superlubricity of a DLC/Si3N4 contact in the presence of castor oil and other green lubricants
文献摘要：
To meet the surging needs in energy efficiency and eco-friendly lubricants,a novel superlubricious technology using a vegetable oil and ceramic materials is proposed.By coupling different hydrogen-free amorphous carbon coatings with varying fraction of sp2 and sp3 hybridized carbon in presence of a commercially available silicon nitride bulk ceramic,castor oil provides superlubricity although the liquid vegetable oil film in the contact is only a few nanometres thick at most.Besides a partial liquid film possibly separating surfaces in contact,local tribochemical reactions between asperities are essential to maintain superlubricity at low speeds.High local pressure activates chemical degradation of castor oil generating graphitic/graphenic-like species on top of asperities,thus helping both the chemical polishing of surface and its chemical passivation by H and OH species.Particularly,the formation of the formation of-(CH2-CH2)n noligomers have been evidenced to have a major role in the friction reduction.Computer simulation unveils that formation of chemical degradation products of castor oil on friction surfaces are favoured by the quantity of sp2-hybridized carbon atoms in the amorphous carbon structure.Hence,tuning sp2-carbon content in hydrogen-free amorphous carbon,in particular,on the top layers of the coating,provides an alternative way to control superlubricity achieved with castor oil and other selected green lubricants.
文献关键词：
中图分类号：
作者姓名：
Yun LONG;Yang WANG;Volker WEIHNACHT;Stefan MAKOWSKI;Momoji KUBO;Jean Michel MARTIN;Maria-Isabel DE BARROS BOUCHET
作者机构：
Ecole Centrale de Lyon,Laboratory of Tribology and System Dynamics,University of Lyon,Ecully 69134,France;Institute for Materials Research,Tohoku University,Sendai 980-8577,Japan;Department of Mechanical Systems Engineering,Graduate School of Engineering,Tohoku University,Sendai 980-8579,Japan;Fraunhofer Institute for Material and Beam Technology(IWS),Dresden 01277,Germany
文献出处：
引用格式：
[1]Yun LONG;Yang WANG;Volker WEIHNACHT;Stefan MAKOWSKI;Momoji KUBO;Jean Michel MARTIN;Maria-Isabel DE BARROS BOUCHET-.Mechanism of superlubricity of a DLC/Si3N4 contact in the presence of castor oil and other green lubricants)[J].摩擦（英文）,2022(10):1693-1706
A类：
superlubricious,nanometres,tribochemical,graphenic,noligomers
B类：
Mechanism,superlubricity,DLC,Si3N4,contact,presence,castor,oil,other,green,lubricants,To,meet,surging,needs,energy,efficiency,eco,friendly,novel,technology,using,vegetable,ceramic,materials,proposed,By,coupling,different,hydrogen,free,amorphous,carbon,coatings,varying,fraction,sp2,sp3,hybridized,commercially,available,silicon,nitride,bulk,provides,although,liquid,film,only,few,thick,most,Besides,partial,possibly,separating,surfaces,local,reactions,between,asperities,are,essential,maintain,low,speeds,High,pressure,activates,degradation,generating,graphitic,like,species,top,thus,helping,both,polishing,its,passivation,by,Particularly,formation,CH2,have,been,evidenced,major,role,friction,reduction,Computer,simulation,unveils,that,products,favoured,quantity,atoms,structure,Hence,tuning,content,particular,layers,alternative,way,control,achieved,selected
AB值：
0.537999
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
