Potential application of graphene nanoplatelets as a high temperature lubricant for hot rolling  

作　　者：Long WANG Anh Kiet TIEU Ming MA Jiaqing LI Guojuan HAI Hongtao ZHU 

机构地区：[1]State Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,Northwestern Polytechnical University,Xi’an 710021,China [2]School of Mechanical,Materials,Mechatronic and Biomedical Engineering,Faculty of Engineering and Information Sciences,University of Wollongong,Northfields Avenue,Wollongong,NSW 2522,Australia [3]State Key Laboratory of Tribology,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China [4]School of Materials Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China

出　　处：《Friction》2022年第11期1810-1823,共14页摩擦（英文版）

基　　金：This work was supported by the Australian Research Council Discovery Project(No.DP190103455)and the Linkage Project(No.LP160101871).

摘　　要：Graphene has been shown to be a promising solid lubricant to reduce friction and wear of the sliding counterparts,and currently is reported to only function below 600℃.In this study,its potential as a lubricant above 600℃ was studied using a ball-on-disc tribo-meter and a rolling mill.Friction results suggest that a reduction up to 50%can be obtained with graphene nanoplatelets(GnP)under lubricated conditions between 600 and 700℃ when compared with dry tests.and this friction reduction can last more than 3 min.At 800 and 900℃,the friction reduction is stable for 70 and 40 s,respectively,which indicates that GnP can potentially provide an effective lubrication for hot metal forming processes.Hot rolling experiments on steel strips indicate that GnP reduces the rolling force by 11%,7.4%,and 6.9%at 795,890,and 960℃,respectively.These friction reductions are attributed to the easily sheared GnP between the rubbing interfaces.A temperature higher than 600℃ will lead to the gasification of the residual graphene on the strip surface,which is believed to reduce the black contamination from traditional graphite lubricant.

关 键 词：GRAPHENE high temperature lubricant hot rolling tribology properties 

分 类 号：TH117.22[机械工程—机械设计及理论]