The experimental test on friction and attrition behavior of the composites of ZnOw/NR-SBR-BR were carried out and got the conclusion that the tetrapod-shaped ZnOw modified by coupling agent appeared to have a good effect on improving the wear resistance.
An excellent wear-resistance microstructure consisting of Al matrix and spherical, moderate size and homogeneous distribution SiCp is formed in the wear surface of Al-SiCp(14 m) composites due to the plastic deformation resulting from friction and attrition.
When the fluoborate nanoparticles are added into poly-α-olefin(PAO) oil as additive at the conditions of mass fraction 0.9% and load 300 N,the frication coefficient and the diameter of wearing scar diameter can be reduced by 18% and 19% respectively,which demonstrates the additive has excellent extreme-pressure anti-wear properties.
The friction and wear properties of C/C composites were studied. The effects of bulk density, microstructure, degree of graphitization, pressure on friction and wear properties were discussed. Combined with the observation of frictionated surface, the reasonable frication and wear mechanism was posed.
Much more attention has been paid to the tribo-electrochemical mechanisms for the control of friction and wear.
This problem was examined in part in , in which the distribution of the friction and pressure in a region with length on the order of a few thicknesses of the approaching boundary layer was obtained in the first approximation.
A relationship is also derived between turbulent friction and the mean velocity profile on the basis of the equation for the maximum turbulent friction, which follows directly from the equation of motion.
Effect of transport processes in the laminar sublayer on friction and heat transfer in the nonequilibrium dissociating turbulent
The coefficients of friction and heat transfer, and the inclination of the bottom flow lines are averaged.
Investigation and mathematical modeling of attrition
A mathematical model is developed to describe attrition, which is the main source of nuclei in suspension crystallization.
To study attrition on a laboratory scale, a set of experiments was carried out with the ammonium sulfate crystal system under various conditions.
The change in the grain size distribution of dispersed materials because of such processes as the continuous growth of large particles at the expense of a fraction of small particles, agglomeration, breaking, and attrition was mathematically modeled.
A mathematical model for the process of continuous crystallization in an experimental FC-crystallizer based on the previously reported model of crystal attrition is developed.