A5070959825- Metal and Thin Film Mechanics
- MXene and MAX Phase Materials
- Lubricants and Their Additives
- 2D Materials and Applications
- Metal Alloys Wear and Properties
- Space Satellite Systems and Control
- Tribology and Wear Analysis
- Astro and Planetary Science
- Spacecraft Dynamics and Control
- Microstructure and Mechanical Properties of Steels
- Advanced materials and composites
University of Science and Technology Beijing
2020-2023
Abstract The effect of grain boundary (GB) defects on the tribological properties MoS 2 has been investigated by molecular dynamics (MD) simulations. GB defects-containing during scratching process shows a lower critical breaking load than that indentation process, owing to combined pushing and interlocking actions between tip atoms. wear resistance with is relevant misorientation angle due accumulation long Mo-S bonds around GBs. Weakening adhesion strength substrate an efficient way...
Pure MoS<sub>2</sub> coatings are easily affected by oxygen and water vapor to form MoO<sub>3</sub> H<sub>2</sub>SO<sub>4</sub> which cause a higher friction coefficient shorter service life.
Hot rolling of titanium alloy currently is carried out without lubrication because the surface defects. In order to explore an effective scheme reduce friction and wear during hot alloy, a mixed graphene-incorporating lubricant has been proposed study its performance mechanism. The tribological experiments were by ball-disk tester under hot-rolling parameters. Scanning electron microscopy (SEM), X-ray energy spectrum analyzer (EDS), powder diffractometer (XRD) Raman analysis used analyse...
The effects of in-plane prestrain on the anti-pressure and anti-wear performance monolayer MoS2 have been investigated by molecular dynamics simulation. results show that observably improves load bearing capacity Pt substrate. friction reduction effect depends deformation degree MoS2. substrate is enhanced around 55.02% when compressive increases 4.03% notably improved as well. capacities for resisting tensile out-of-plane are responsible outstanding lubrication mechanism This study provides...
A novel polyphosphate lubricant was used and evaluated during hot (ferrite) rolling of an interstitial-free (IF) steel. The texture evolution these rolled IF steels have been examined by means X-ray diffraction (XRD) electron backscatter (EBSD) measurements. shows improved lubrication performance in terms the optimization compared with lubricating oil unlubricated conditions. γ-fiber is enhanced, less shear produced. This microstructure responsible for enhanced drawability ferrite steels....
Electromagnetic docking technology can realize the flexible and safe separation of spacecraft, presents broad application prospects. However, an electromagnetic force with nonlinearity uncertainty properties increases difficulties control. In this work, magnetic dipole far-field model a single coil has been established by simplifying device. Afterward, torque models were obtained during space docking. The dynamics was analyzing influences disturbance caused geomagnetic field. According to...