Session D40 - Poster Session I.
POSTER session, Monday afternoon, March 12
Exhibit Hall, Washington State Convention Center
Frictional properties of nanostructured carbon films,obtained by deposition of supersonic carbon clusters, have been investigated by friction force microscopy under ambient conditions. The experiment was performed at low loads to avoid plastic deformation and wear. Films were scanned on nanometric scale toreduce the topographical contribution to lateral forces. By analysing the load-dependent measurements acquired on samples with diferent composition, we observed that the Herzian-plus-offset model can take into account the frictional behaviour of these materials. A strong dependence of adhesive forces on the specific surface location was observed. A quantitative comparison among these films and others carbon compounds is presented.