Performance of Thermally Sprayed Coatings under Reciprocal Sliding Test
This study aims to evaluate the behavior of thermally sprayed coatings with the HVOF technique (High Velocity Oxygen Fuel), subject to tribological testing of reciprocal movement with the SAE 52100 flat steel pin, in accordance with ASTM G 133. The carbon with Cr2C3-25NiCr and WC-12Co were evaluated under conditions of intense surface fatigue. The microstructure and surface modifications were analyzed by optical microscopy and scanning electron microscopy. By using these techniques were possible to compare the modifications of the coatings under repeated loading conditions, and to expand the knowledge about wear mechanisms, mainly the adhesive one, present in several mechanical components, particularly in bearing and internal combustion engines. The coatings tested showed lower wear rate when compared to SAE52100 steel and equivalent behavior among the different loading conditions applied.
Lucio Salgado and Francisco Ambrozio Filho
A.B.C. Arnt et al., "Performance of Thermally Sprayed Coatings under Reciprocal Sliding Test", Materials Science Forum, Vols. 660-661, pp. 463-467, 2010