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Particulate Science and Technology
An International Journal
Volume 37, 2019 - Issue 8
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Original Articles

The extreme pressure and lubricating behaviors of potassium borate nanoparticles as additive in PAO

Yi LiState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. China;University of Chinese Academy of Sciences, Beijing, P. R. ChinaView further author information
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Songwei ZhangState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. China;Qingdao Center of Resource Chemistry & New Material, Qingdao, P. R. ChinaCorrespondence[email protected]
View further author information
,
Qi DingState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. China;Qingdao Center of Resource Chemistry & New Material, Qingdao, P. R. ChinaView further author information
,
Jinzhu TangState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. China;University of Chinese Academy of Sciences, Beijing, P. R. ChinaView further author information
,
Baofeng QinState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. ChinaView further author information
&
Litian HuState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. ChinaCorrespondence[email protected]
View further author information
Pages 932-942 | Published online: 15 May 2018
 
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ABSTRACT

The potassium borate nanoparticles (nPB) as lubricant additive were prepared with an eco-friendly method. The tribological properties of nPB and ZDDP as lubricant additives in polyalphaolefin (PAO) were systematically evaluated using a four-ball tribometer and a SRV fretting friction and wear tester, which suggested that nPB exhibited excellent extreme pressure capacity, and better anti-wear and friction-reducing properties than ZDDP. Results of surface analyses show that the good lubricating properties and excellent load-carrying capacity of nPB in PAO are ascribed to the boundary protecting films, which were composed of some easy-shearing compounds: B2O3, FexBy and Fe2O3.

Additional information

Funding

The authors acknowledge financial support from the National Natural Science Foundation of China (51575506 and 51505462) and Applied Basic Research Project of Qingdao: Youth Program (Grant No. 14-2-4-85-JCH).

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