About the article
V.V. IZMAILOV, Dr. Sc., M.V. NOVOSELOVA, Cand. Sc.
The possibilities of using the overall Harrington desirability function as an integral indicator of the quality of electrocontact composite powder materials are shown. The calculation of the overall desirability function was performed for a number of copper-based materials, taking into account the main operational characteristics: specific conductivity, specific electrical discharge wear resistance and hardness. This function is universal dimensionless criterion that does not depend on the dimensions of the quantities included in it. According to the highest value of the desirability function, the samples with the optimal complex of operational properties were selected. These turned out to be samples with a high percentage of copper, the wear resistance of which was increased by the introduction of a small amount of refractory components – fine diamonds and chromium.
electrical contact material, powder composites, copper, refractory components, conductivity, electroerosive wear resistance, hardness, desirability function.