Abstract
The WC particle-reinforced copper matrix composites with WC content in the range of 5 vol%–30 vol% were prepared and investigated by micro-scratch tests under the loads of 1–4 N. The influences of normal load and WC content on friction coefficient and wear volume of the composites were studied. The hardness and scratch resistance of the composites are greatly improved by the addition of WC. The penetrate depth and residual depth increase near-linearly with normal load increasing and decrease with WC content increasing, and the friction coefficient of the composites also shows the same variation trend. The valid material removal mechanism is found to transform from micro-plowing to micro-cutting as the normal load increases.
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