EFFECT OF SURFACE MECHANICAL ATTRITION TREATMENT ON ROUGHNESS AND WETTABILITY OF AISI 316L

Abstract

Surface roughness and wettability determines the rate and quality of protein adsorption and cells adhesion on biomaterial. A rough- and hydrophilic-surface are better for adsorption of specific proteins and promotion of the following biological processes than a smooth- and hydrophobicone. This paper discusses the effect of surface mechanical attrition treatment (SMAT) on the roughness andwettability of AIS1316L. The polished samples were treatedfor 0 - 20 minutes. The result shOtt'sthat SMA Tprocess enhances surface roughness and decreases droplet contact-angle. Increasing of SMAT duration enhances microhardness of the sample's surface and subsurface, and yields a relatively smooth surface that reduces hydrophilicity of A/SI316L.</p