Abstract
The friction and wear characteristics of aluminum bronze QAl10-4-4 bearing materials are investigated through pin–disk simulation testing under the dry sliding state at the operating conditions with rotating speed, load and temperature using the high-speed and high-temperature friction and wear testing machine (MG-2000). The quality of the pin, the friction coefficient and surface topography of the samples are monitored during the tests. The study results show that the average friction coefficient presents a similar N shape curve with the increase in rotating speed and temperature and a hook shape curve with the increase in load. The wear extent increases linearly with the increase in rotating speed, increases firstly and then decreases with the increase in load and presents a similar N shape trend with the increase in temperature. The main wear mechanisms of QAl10-4-4 bearing materials under high-temperature dry sliding conditions are discussed; the rotating speed mainly influences the friction and wear characteristics of the material by sliding heat. The loads mainly affect the friction and wear characteristics of the material through the actual contact area, and wear debris. The influence of temperature on the friction and wear characteristics of the material mainly depended on the surface layer properties.
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Acknowledgements
The work was financially supported by Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (No. 2019L0978) and the Key Research and Development Program of Shanxi Province of China (International Cooperation, 201803D421028, 201903D421051).
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Li, H., Li, R., Yang, F. et al. Friction and wear characteristics of aluminum bronze (QAl10-4-4) bearing materials under high-temperature dry sliding conditions. J Braz. Soc. Mech. Sci. Eng. 42, 354 (2020). https://doi.org/10.1007/s40430-020-02437-9
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DOI: https://doi.org/10.1007/s40430-020-02437-9