润滑科技信息平台

The advanced nano-additives can improve the lubrication performance of nanolubricants efficiently, which could greatly reduce energy consumption. Here, we prepared the BN coated with carbon layer (BN@C) by a novel hydrothermal coating method with pristine BN nanosheets as matrix material and glucose as carbon source. And the BN@C exhibited excellent lubrication performance as a lubricant additive. In order to investigate the tribological properties, BN@C was modified with oleic acid as a surfactant, and the friction tests were carried out on an MRS-10A four-ball friction and wear tester. Benefitting from the stable dispersity, ultrasmall particle size and the surface carbon layer of BN@C-OA, the lubrication performance was significantly improved. More impressively, BN@C-OA could enter the interface of friction pairs. The interlayer sliding occurred to improve the anti-wear and anti-friction properties. This study could provide a new avenue to synthesize the coatingcontaining nanocomposite additive to promote the lubrication properties of nanoparticles in oil.

Effect of vibration amplitude and axle load on the rail rolling contact fatigue under water condition

Pub Date: 2021-6-15 DOI: 10.1016/j.wear.2021.203876

[Zhang, S. Y., Zhao, H. Y., Ding, H. H., Lin, Q., Wang, W. J., Guo, J., Wang, P., Zhou, Z. R.]

Investigation on the relationship between microstructure and wear characteristic of rail materials

Pub Date: 2021-6-15 DOI: 10.1016/j.wear.2021.203876

[Li, X. C., Ding, H. H., Wang, W. J., Guo, J., Liu, Q. Y., Zhou, Z. R.]

Laboratory investigation on the particle-size effects in railway sanding: Comparisons between standard sand and its micro fragments

Pub Date: 2021-6-15 DOI: 10.1016/j.wear.2021.203876

[Shi, L. B., Wang, C., Ding, H. H., Kvarda, D., Galas, R., Omasta, M., Wang, W. J., Liu, Q. Y., Hartl, M.]