Tribological characterization of different geometries generated with laser surface texturing for tooling applications

摘要: Abstract Many techniques have been used to improve the tribo-characteristics of surfaces in contact and relative movement under applied load: coatings, heat treatments, lubricants, additives, laser surface texturing (LST). Regarding LST, researchers worked with different applications, geometries, pressure, lubricants having positive results enhancing tribological properties coefficient friction (COF) wear. Circles, triangles lines are micro cavities geometries most documented studies results. In this work, a comparative study these three as well square, crosshatch “S” shape was performed. A T-05 conformal block-on-ring tribotester reciprocating measure COF wear values according ASTM G77 standard applying pressures PAO4 lubricant fluid. The indicate that behave differently pressure. For low pressures, textured circles showed best performance reduction 38% 57% respectively. high geometry had 78% 54%, Finally, for possible applications tools common manufacturing processes is presented.