1. High-temperature tribological behaviors of MoAlB ceramics sliding against Al2O3 and Inconel 718 alloy.
- Author
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Yu, Zengguang, Tan, Hui, Wang, Shuai, Cheng, Jun, Sun, Qichun, Yang, Jun, and Liu, Weimin
- Subjects
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INCONEL , *ADHESIVE wear , *FRETTING corrosion , *MECHANICAL wear , *CERAMICS , *NICKEL-chromium alloys - Abstract
In this work, the friction and wear properties of layered MoAlB ceramics sliding against Al 2 O 3 and Inconel 718 alloy (Inc718) from room temperature (RT) to 800 °C were studied. The tribological behaviors of MoAlB ceramics are found to be greatly influenced by the test temperature and the counterpart. From RT to 800 °C, the MoAlB/Al 2 O 3 tribo-pairs exhibit a higher friction coefficient and wear rate compared with those of the MoAlB/Inc718 tribo-pairs. Irrespective of the laminate structure, the tribological properties of MoAlB ceramics are associated with the oxides that are induced by tribo-oxidation reactions. For the MoAlB/Al 2 O 3 tribo-pairs, abrasive wear and adhesive wear are responsible for the poor friction and wear behaviors. However, the tribo-film, which consists of oxides of Ni, Cr and Fe, can provide a good lubrication effect when MoAlB slides against Inc718. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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