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Effects of magnetic ionic liquid as a lubricant on the friction and wear behavior of a steel-steel sliding contact under elevated temperatures

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Friction 2021年第1期9卷 61-74页

作者： Jiajia JIA Guangbin YANG Chunli ZHANG Shengmao ZHANG Yujuan ZHANG Pingyu ZHANG Engineering Research Center for Nanomaterials Henan UniversityKaifeng 475004China Institute of Pharmacy Henan UniversityKaifeng 475004China

A magnetic ionic liquid(abridged as MIL)[C_(6)mim]_(5)[Dy(SCN)_(8)]was prepared and used as the magnetic lubricant of a steel-steel sliding *** tribological properties of the as-prepared MIL were evaluated with a commercially obtained magnetic fluid lubricant(abridged as MF;the mixture of dioctyl sebacate and Fe_(3)O_(4),denoted as DIOS-Fe_3O_4)as a *** lubrication mechanisms of the two types of magnetic lubricants were discussed in relation to worn surface analyses by SEM-EDS,XPS,and profilometry,as well as measurement of the electric contact resistance of the rubbed steel *** results revealed that the MIL exhibits better friction-reducing and antiwear performances than the as-received MF under varying test temperatures and *** is because the MIL participates in tribochemical reactions during the sliding process,and forms a boundary lubrication film composed of Dy_(2)O_(3),FeS,FeSO_(4),nitrogen-containing organics,and thioether on the rubbed disk surface,thereby reducing the friction and wear of the frictional ***,the MF is unable to form a lubricating film on the surface of the rubbed steel at 25°C,though it can form a boundary film consisting of Fe_(3)O_(4) and a small amount of organics under high ***,the excessive Fe_(3)O_(4) particulates that accumulate in the sliding zone may lead to enhanced abrasive wear of the sliding pair.

关键词： steel-steel sliding contact magnetic ionic liquid magnetic fluid lubricant tribological property lubrication mechanism

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magnetically rotational reactor for absorbing benzene emissions by ionic liquids

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China Particuology 2007年第1期5卷 130-133页

作者： Yangyang Jiang Chen Guo Huizhou Liu Laboratory of Separation Science and Engineering National Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China Graduate University of Chinese Academy of Sciences Beijing 100080 China

A magnetically rotational reactor （MRR） has been developed and used in absorbing benzene emissions. The MRR has a permanent magnet core and uses magnetic ionic liquid [bmim]FeCl4 as absorbent. Benzene emissions were carried by N2 into the MRR and were absorbed by the magnetic ionic liquid. The rotation of the permanent magnet core provided impetus for the agitation of the magnetic ionic liquid, enhancing mass transfer and making benzene better dispersed in the absorbent. 0.68 g benzene emissions could be absorbed by a gram of [bmim]FeCl4, 0.27 and 0.40 g/g higher than that by [bmim]PF6 and [bmim]BF4, respectively. The absorption rate increased with increasing rotation rate of the permanent magnet.

关键词： magnetically rotational reactor (MRR) magnetic ionic liquid Absorption Permanent magnet

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magnetically rotational reactor for absorbing benzene emissions by ionic liquids

引用

Particuology 2007年第Z1期 130-133页

作者： Yangyang Jianga,b, Chen Guoa, Huizhou Liua, a Laboratory of Separation Science and Engineering, National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China b Graduate University of Chinese Academy of Sciences, Beijing 100080, China

A magnetically rotational reactor (MRR) has been developed and used in absorbing benzene emissions. The MRR has a permanent magnet core and uses magnetic ionic liquid [bmim]FeCl4 as absorbent. Benzene emissions were carried by N2 into the MRR and were absorbed by the magnetic ionic liquid. The rotation of the permanent magnet core provided impetus for the agitation of the magnetic ionic liquid, enhancing mass transfer and making benzene better dispersed in the absorbent. 0.68 g benzene emissions could be absorbed by a gram of [bmim]FeCl4, 0.27 and 0.40 g/g higher than that by [bmim]PF6 and [bmim]BF4, respectively. The absorption rate increased with increasing rotation rate of the permanent magnet.

关键词： magnetically rotational reactor (MRR) magnetic ionic liquid Absorption Permanent magnet

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