Abstract

The paper presents results of the tribotechnical and acoustic characteristics of copper-based frictional composite materials depending on the composite structure and content of metallic (tin, iron) and carbon (coke, graphite) additives in the composition. Changes in the studied characteristics are most pronounced under dry friction conditions. The introduction of the additives leads to reduced friction components of noise to 56 dB. In the boundary friction mode, the greatest effect of introduced target additives on the acoustic characteristics does not exceed 11 dB relative to the material without additives. For a composite based on 12% tin bronze, an increase in the graphite content from 10 to 30 vol % results in a 5 dB noise reduction.

中文翻译：

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铜基粉末摩擦复合材料在干摩擦和边界摩擦条件下的摩擦声特性

摘要

本文介绍了铜基摩擦复合材料的摩擦技术和声学特性，具体取决于复合材料的结构和组成中金属（锡，铁）和碳（焦炭，石墨）添加剂的含量。在干摩擦条件下，所研究特性的变化最为明显。添加剂的引入导致噪音的摩擦分量降低到56 dB。在边界摩擦模式下，相对于不含添加剂的材料，引入的目标添加剂对声学特性的最大影响不会超过11 dB。对于基于12％锡青铜的复合材料，石墨含量从10％（体积）增加到30％（体积）会导致噪音降低5 dB。