Purpose

This paper aims to study the effect of load on the tribological behaviour of Cu-based composites, so as to obtain a suitable applied load on these composites.

Design/methodology/approach

Cu-based composites were prepared by powder sintering with direct current electric current heating and tested by Universal Mechanical Test-3 with a ball-on-disk at room temperature.

Findings

The results showed that Cu-based composites are might suitable for working under low load. There is only mild damage on the surface under a load of 2 N. While it has microcracks and shows signs of cavitation at a certain depth at 20 N and 50 N. In addition, it is evident that there are three zones in the cross-section of the matrix, namely, a mechanical mixing layer, ceramic layer and substrate, respectively.

Originality/value

There are two wear mechanisms at different loads, and the evolution of worn surfaces with sliding time is also involved. Thus, the developed material can be used for light load sliding electrical contact material applications.

中文翻译：

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研究负载对Ti2SnC颗粒增强的Cu复合材料的摩擦学性能的影响

目的

本文旨在研究载荷对铜基复合材料摩擦学行为的影响，从而获得合适的施加载荷。

设计/方法/方法

铜基复合材料是通过在直流电流加热下进行粉末烧结而制备的，并通过通用机械测试3（Universal Mechanical Test-3）在室温下用圆盘球进行了测试。

发现

结果表明，铜基复合材料可能适合在低负荷下工作。在2 N的载荷下，表面只有轻微的损伤。虽然它有微裂纹，并且在20 N和50 N的一定深度处显示出空化迹象。此外，很明显，在交叉点上有三个区域基质的横截面，分别是机械混合层，陶瓷层和基材。

创意/价值

有两种在不同载荷下的磨损机理，并且还涉及磨损表面随滑动时间的演变。因此，所开发的材料可以用于轻载滑动电接触材料的应用。