Microstructural Analysis of Ti/W/WC Deposition by ESD Method

The paper proposes an increase in wear resistance of Fe-C alloy parts by coating with thin layers to assure special properties, using inexpensive support materials subjected to deposition of the expensive materials. The effect is to improve the tribological qualities of the parts working in harsh conditions of temperature and pressure and also with sands the aggressive corrosion environments, in which roughness is not an impediment to the smooth functioning of the subassembly. The paper will study the layer-substrate subassembly for various types of depositions, whose compatibility with the substrate provide high quality parts. Thus, this system of layers can be applied both on the new and worn parts, been able to recondition and reintroduce in an intensive exploitation regime any parts with complex configuration operating in dynamic conditions. By means of the Elitron 22A installation, thin layer deposits were made to modify the surface properties of the base material (ferrito-perlitic cast iron), using for multilayer layer deposition: triple layer, type: Ti/W/WC. The investigation of the samples deposited by the electrospark deposition method was carried out using a scanning electron microscope).