In dry sliding surfaces, one of the central phenomena during mechanical contact is the material transfer and accumulation between the surfaces, calledgalling failure. For example, in sheet metal forming process, galling is the major cause of reducing life of both tool and formed sheet. Galling is an inherently multiscale processes. In laboratory scale experiments, a clear evidence of improved galling resistance of alloyed steels upon inclusion carbides and/or nitrides has been reported. However, the relevant mechanisms are still obscure as they occur at atomic scale. Hence, atomistic simulations become an indispensable tool for better understanding and explaining these mechanisms. Here we report our molecular dynamics results about the influence of nano-sized cementite particles on the wear mechanisms of bcc-iron sheet during dry sliding. We find that the average frictional force (decreases) whereas the normal force (increases) for iron-cementite/iron system. Adhesion force between self-mated iron/iron and cementite/iron surfaces has been determined and we found that iron/cementite surface exhibits lower adhesive force than that of iron/iron surface. The variation of adhesion force with temperature was investigated up to 700 K and we found that the adhesive force generally decreases with increasing temperature.