Abstract
The effect of Ti3AlC2 content on electrical friction and wear behaviors of Cu–Ti3AlC2 composites is investigated. Composites with different volume ratios of Ti3AlC2 are prepared by the hot-pressing method, and experiments are performed on a block-on-ring sliding electrical wear tester. The results demonstrate that with increasing Ti3AlC2 content, the contact voltage drops of the Cu–Ti3AlC2 composites increase, the friction coefficient decreases, and the wear rate initially decreases and then increases. A lubricating film forms on the worn surface during the process of electrical sliding wear, which improves the wear resistance of the material. Raman spectroscopy and X-ray photoelectron spectroscopy spectra of the worn surface show that the lubricating film comprises Ti3AlC2, CuO, TiO2 and Al2O3, where the TiO2 and Al2O3 result from decomposition of Ti3AlC2.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51571078, 51871085), and the Natural Science Foundation of Anhui Province (1808085 ME122, 1908085 QE218).
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Zhao, H., Feng, Y., Qian, G. et al. Effect of Ti3AlC2 Content on Electrical Friction and Wear Behaviors of Cu–Ti3AlC2 Composites. Tribol Lett 67, 96 (2019). https://doi.org/10.1007/s11249-019-1211-6
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DOI: https://doi.org/10.1007/s11249-019-1211-6