SELF-CLEANING HYDROPHOBIC FRICTION SYSTEMS
Journal Title: Tribologia - Year 2010, Vol 231, Issue 3
Abstract
Adhesive or sticking tribological mechanisms are interesting in several respects. Biological sticking mechanisms may aid in understandding the principles of the functioning of other technical frictional and adhesive mechanisms. Biological sticking surfaces provide a rich source of ideas for the development of industrial applications, such as self cleaning surfaces. For example, the self-cleaning surfaces are very desirable for the internal surfaces of tanks for lubricants in contact with the oil. The shared surfaces of the plough ought to have self-cleaning properties too. Self cleaning-abilities of the surface are known as the hydrophobic properties. Hydrophobic surfaces have specific sculptured shapes with the nano-ridges and nano-grooves. Particle contaminating surface structures consists, in most cases, of material that is more readily wetted than hydrophobic wax components. Contaminants usually rest on the tips of the surface structures, so that the real contact area between the particles and sculptured surface is minimised. Thus, these particles can be easily removed by water droplets rolling over the surface. In this case, the adhesion between particles and water droplets is greater than between particles and the sculptured surface due to the reduced contact between the particles and surface. Therefore, we have the selfcleaning process of the surface.<br/><br/>
Authors and Affiliations
Krzysztof Wierzcholski, Andrzej Miszczak
Keywords
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