润滑科技信息平台

Synthesis of oil-soluble WS2 nanosheets under mild condition and study of their effect on tribological properties of poly-alpha olefin under evaluated temperatures

出版日期: 2019-10

DOI: 10.1016/j.triboint.2019.05.036

作者: Jiang, Zhengquan; Zhang, Yujuan; Yang, Guangbin; Gao, Chuanping; Yu, Laigui; Zhang, Shengmao; Zhang, Pingyu;

A liquid phase method was adopted to encapsulate tungsten disulfide (WS2) nanosheets with oleylamine (OA) at a relatively lower temperature of 200 degrees C so as to acquire good solubility in organic lubricant base oil. The effect of OA-modified WS2 nanosheets on the tribological properties of poly-alpha olefin (PAO6) in a wide temperature range was examined with a four-ball machine and a UMT TriboLab test rig in a piston ring-cylinder liner contact mode. Results indicate that the OA-modified WS2 nanosheets added in PAO6 oil are able to improve the tribological properties of the lubricant base oil significantly at elevated temperatures; and they are advantageous over zinc dialkyldithiophosphates in improving the anti-wear ability of PAO6 from room temperature to 300 degrees C.

Preparation of Nanofluid of Lanthanum Borate Nanosheets and Investigation of Its Tribological Properties and Tribomechanisms in Different Base Oils

Pub Date: 2019-10 DOI: 10.1016/j.triboint.2019.05.036

[Wu, Jing, Yang, Guangbin, Zhang, Shengmao, Zhang, Yujuan, Sun, Lu, Sun, Tianhua, Yu, Laigui, Zhang, Pingyu]

Study on the mechanism of rapid formation of ultra-thick tribofilm by CeO₂ nano additive and ZDDP

Pub Date: 2019-10 DOI: 10.1016/j.triboint.2019.05.036

[Lei, Xue, Zhang, Yujuan, Zhang, Shengmao, Yang, Guangbin, Zhang, Chunli, Zhang, Pingyu]

Study on the mechanism of rapid formation of ultra-thick tribofilm by CeO2 nano additive and ZDDP

Pub Date: 2019-10 DOI: 10.1016/j.triboint.2019.05.036

[Lei, Xue, Zhang, Yujuan, Zhang, Shengmao, Yang, Guangbin, Zhang, Chunli, Zhang, Pingyu]