Hardening of FeCrMoWCBSi amorphous electrospark coatings with tungsten carbide

A new direction in the development of metal-matrix coatings are composites based on an amorphous matrix with reinforcing ceramic additives. In this work, composite were prepared by electrospark treatment AISI 1045 a mixture iron granules multicomponent composition CrMoWCBSi and addition tungsten carbide powder. According to X-ray analysis, increase concentration WC up 1.2 vol.%, content phase coating increased. addition, analysis showed metallic tungsten, which is product partial dissolution particles melt. microstructure coatings, inclusions diameter 1.8 ± 0.9 μm observed. The oxidation resistance at temperature 700°C decreased monotonically additive granules. microhardness was range from 814 1118 HV, higher compared completely sample (743 HV). average values friction coefficient ranged 0.60 0.67, 30 % lower than that coating. wear rate 0.5 –1.1×10−5 mm3 / Nm, without (1.8 ×10−5 Nm). optimal value powder during deposition for tribotechnical applications vol.%. Thus, use reinforced makes it possible reduce steel 45 8 times.