Improvement of wear resistant thermally sprayed coatings by microfinishing

To increase the wear resistance of tribologically highly stressed slide faces, thermally sprayed coatings based on tungsten carbide are widely used. In addition to the technological progress in powder metallurgy and coating technology, an improved preparation of the substrate surface increases the fatigue resistance of the coated workpieces. Surfaces machined by short-stroke honing instead of the commonly used abrasive blasting process, show a significantly enhanced interface between the surface and the coating. In addition, the use of diamond as hard cutting material enables the wear resistant coating to be honed and a high surface quality to be generated.