Dispersion–tribological property relationship in mineral oils containing 2D layered α-zirconium phosphate nanoplatelets  

作　　者：Feng JIANG Haoyang SUN Lei CHEN Fan LEI Dazhi SUN 

机构地区：[1]Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

出　　处：《Friction》2020年第4期695-707,共13页摩擦（英文版）

基　　金：This work was supported by the start-up funding from the Southern University of Science and Technology(SUSTech),"The Recruitment Program of Global Youth Experts of China";the Foundation of Shenzhen Science and Technology Innovation Committee(Grant Nos.JCYJ20160315164631204 and KQJSCX20170726145415637).

摘　　要：Inorganic nanomaterials exhibit superior friction-reduction and anti-wear properties in oils. In this study, 2D layered α-zirconium phosphate (α-ZrP) nanosheets intercalated with different amines have been synthesized to study their dispersion stabilities in lubricating oil and tribological applications. The intercalated amines should be sufficiently long and lipophilic to provide stabilization to α-ZrP nanosheets in mineral oil. The results of tribological tests illustrate that with the addition of well-dispersed nanosheets, the coefficient of friction (COF) and pin volume loss reduce by ~47% and 75%, respectively. The excellent dispersion stability enables the nanosheets to flow into the contact area at the beginning, and thereby protect the rubbing surface. A reduction in the van der Waals forces between the adjacent layers induced by the intercalated amines transforms the friction between adjacent layers from pin disk to sliding, leading to a decrease in the COF under hydrodynamic lubrication. The study provides a new method to enhance the tribological properties via tuning the dispersion stabilities of nanomaterials in oils.

关 键 词：friction-reduction and anti-wear nanoadditive layered nanosheet α-zirconium phosphate(α-ZrP) DISPERSION TRIBOLOGY 

分 类 号：TB383.1[一般工业技术—材料科学与工程]