润滑科技信息平台

Investigating the effect of polytetrafluoroethylene on the tribological properties and corrosion resistance of epoxy/hydroxylated hexagonal boron nitride composite coatings

出版日期: 2023-1

DOI: 10.1016/j.corsci.2022.110820

作者: Li, Guihua; Chen, Lei; An, Yulong; Gao, Meizhen; Zhou, Huidi; Chen, Jianmin;

The work investigated the effect of polytetrafluoroethylene (PTFE) on the tribological properties and corrosion resistance of epoxy/hydroxylated hexagonal boron nitride (EP/OH-h-BN) composite coatings. Results showed that the average friction coefficient and wear rate of the EP/OH-h-BN/PTFE composite coating with the mass ratio of PTFE to EP of 0.8 decreased by 68.4% and 60.3% compared to those of EP/OH-h-BN coating, respectively. Moreover, the coating still exhibited the largest vertical bar Z vertical bar(0.01 Hz) value of 2.28 x 10(11) Omega center dot cm2 after 80 days of immersion in 3.5 wt% NaCl solution, which was about 5 times of EP/OH-h-BN coating. The enhancement of coating properties was attributed to the synergistic strengthening effect of OH-h-BN and PTFE.

Effect of alloying elements on microstructure evolution and wear mechanism of MCrAlX-based coatings at 800?C

Pub Date: 2023-1 DOI: 10.1016/j.corsci.2022.110820

[Hao, Enkang, Chen, Jie, Liu, Guang, Cui, Lang, Jia, Li, Wei, Liankun, Ma, Bing, An, Yulong]

Stress-dependent nanowear of nickel-based single crystal superalloy: Transition from hillock to groove

Pub Date: 2023-1 DOI: 10.1016/j.corsci.2022.110820

[Liu, Yangqin, Wang, Yang, Peng, Yongmin, Shi, Wei, Chen, Xiang, Wei, Xin, Qian, Linmao, Chen, Lei]

Corrosion and tribocorrosion resistance of MAO-based composite coating on AZ31 magnesium alloy

Pub Date: 2023-1 DOI: 10.1016/j.corsci.2022.110820

[Liu, Siqin, Li, Guihua, Qi, Yuming, Peng, Zhenjun, Ye, Yinping, Liang, Jun]