title: Bifunctional hairy silica nanoparticles as high-performance additives for lubricant.
abstract: Bifunctional hairy silica nanoparticles (BHSNs), which are silica nanoparticles covered with alkyl and amino organic chains, were prepared as high-performance additives for lubricants. Compared with hairy silica nanoparticles covered by a single type of organic chain, binary hairy silica nanoparticles exhibit the advantages of both types of organic chains, which exhibit excellent compatibility with lubricants and adsorbability to metal surfaces. Nanoparticles with different ratios of amino and alkyl ligands were investigated. In comparison to an untreated lubricant, BHSNs reduce the friction coefficient and wear scar diameter by 40% and 60%, respectively. The wear mechanism of BHSNs was investigated, and the protective and filling effect of the nanoparticles improved because of collaboration of amino and alkyl ligands.
authors.affiliation: Harbin Institute of Technology, School of Mechatronics Engineering, Harbin, 150001, China.
authors.forename: Tianyi
authors.initials: T
authors.lastname: Sui
authors.affiliation: Harbin Institute of Technology, School of Mechatronics Engineering, Harbin, 150001, China.
authors.forename: Baoyu
authors.initials: B
authors.lastname: Song
authors.affiliation: National Synchrotron Radiation Research Center, Experimental Facility Division, Hsinchu, 30076, Taiwan.
authors.forename: Yu-Ho
authors.initials: YH
authors.lastname: Wen
authors.affiliation: Harbin Institute of Technology, School of Mechatronics Engineering, Harbin, 150001, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang