Tribotechnical properties of experimental hard alloys with modified cobalt binder

Introduction . This paper discusses tribomechanical characteristics of experimental hard alloys with a modified cobalt binder under friction without lubrication on hard-to-cut materials – stainless steel and titanium alloy. The research objective is to evaluate the process interaction for each pair according number parameters, determine optimal combinations “experimental alloy structural material” basis established tribological indicators. Materials Methods Tribological tests were carried out using cylinder-to-disc scheme different sliding speeds temperatures constant load use lubricants. Comparison was by frictional force, volumetric wear roughness tracks counterbody. Stainless 12H18N9Т ВТ3-1 used as counterbody materials. resistance compositions abrasive type determined through measuring surface dynamic microhardness scanning nanohardness tester analyzing thickness scratches caused indenter. Results According results microindentation, 2.22 (binder 5.65% Co + l.8% Mo 0.6% Ti) 2.23 5.1% 2.7% 0.61 % are characterized highest microhardness. For these materials, average scratch width at various forces minimal. During tests, best recorded in combination 2.22, “titanium VT3-1 — 2.23”. this low coefficients level fluctuations, minimal samples, changes initial microrelief their surfaces. Discussion Conclusions As result research, pairs from point view established, specifically 2.23” “stainless 12X18N9T 2.22”. wear, which will contribute increasing tool areas elastic contact front rear