Keyword: «tin bronze»

The effect of detonation nanodiamond (DND) content on the tribological characteristics of tin bronze (80% Cu – 20% Sn) was investigated. Composites containing 0.5–3.0 wt.% DND were fabricated by hot pressing. It was found that the addition of 1.5 wt.% DND provides optimal performance: the friction coefficient decreases by 18%, mass wear by 26%, and linear wear by 21%. Nanodiamond are distributed uniformly throughout the matrix volume and contribute to increased wear resistance of bronze composites..

The authors study the effect of ultra-dispersed natural diamond powders, used as fillers, on the properties of a tin bronze composite material, depending on the percentage content and grain size. Physical and mechanical characteristics of the samples were obtained. Metallographic studies of the surface of the samples under study were carried out. The theory of grain boundary and dispersion strengthening mechanisms was investigated. Based on the results of metallographic studies, calculations of quantitative hardening indicators were carried out using the Orowan and Hall-Petch equations. It was found that the introduction of fillers into the composite in a certain amount has a positive effect on the physical and mechanical properties