Abstract:

A surface micro-pore texturing technology formed by grinding and polishing has been developed to improve the tribological properties on metal surface. The effect of load and size of abrasive particles on surface texturing parameters (micro pore density, area density, aperture and surface roughness) is researched. The results show the number of pores per unit area and the size increase during the same period as the load changes from 0.0073 MPa to 0.0232 MPa, resulting in consequential augment of the surface roughness. And the area density changes form 5.51% to 10.07%. While the aperture varies from 0.5 μm to 50 μm, the number of pores per unit area rapidly reduces but the diameter significantly increases, which leads to the surface roughness increasing. What’s more, the area density decreases with the growth of particle size. However, during the grinding and polishing process the abrasive particles caused sub-damage to the metal surface when the size exceeds about 20 μm.

Key words: area density, load, micro-pore formation, size of abrasive particle, surface texture