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Tribological properties of spherical and mesoporous NiAl particles as ionic liquid additives

查看全文 作　　者：Yao [1]YAO;Yi [1]XU;Xiaoqiang [1]FAN;Minhao [1,2]ZHU;Guangfei [3]LIU 高影响力作者 机构地区：[1]Key Laboratory of Advanced Technologies of Materials(Ministry of Education),School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China;[2]Tribology Research Institute,State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China;[3]School of Engineering,Liaocheng Vocational&Technical College,Liaocheng 252000,China高影响力机构 出　　处：《Friction》索引2020年第8卷第2期,共12页高影响力期刊 基　　金：support provided by the National Natural Science Fuulaliunl uf Cuild(Nu.51705435 auul Nu.51627806);key project of Sichuan Department of Science and Technology(No.2018JZ0048);Fundamental Research Funds for the Central Universities(2018GF05). 摘　　要：In this study,spherical and mesoporous NiAl particles(abbreviated as sNiAl and mNiAl)were introduced as lubricant additives into two alkyl-imidazolium ionic liquids(ILs)(l-butyl-3-methylimidazolium tetrafluoroborate(LB104)and l-butyl-3-methyl imidazolium hexafluorophosphate(LP104))to explore their tribological properties.The sNiAl and mNiAl particles were modified in-situ by anion and cation moieties of ILs through chemical interaction,thereby enhancing their dispersibility and stability in ILs.The mNiAl particles have better dispersibility than the sNiAl ones in ILs because of high specific surface area.LP104-modified sNiAl particles show better friction reduction and wear resistance,mainly relying on the synergy of the hybrid lubricant.These particles form a protective layer that prevents friction pairs from straight asperity contact and improves the tribological behaviors. 关 键 词：ionic liquids alloy particles spherical and mesoporous structure tribological properties
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