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Open AccessArticle

Friction and Wear Characteristics of 18Ni(300) Maraging Steel under High-Speed Dry Sliding Conditions

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
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Materials 2020, 13(7), 1485; https://doi.org/10.3390/ma13071485
Received: 20 February 2020 / Revised: 19 March 2020 / Accepted: 22 March 2020 / Published: 25 March 2020
18Ni(300) maraging steel, which has exceptional strength and toughness, is used in the field of aviation and aerospace. In this paper, using a high-speed tribo-tester, tribological behaviors of 18Ni(300) maraging steel were investigated under high-speed dry sliding conditions. Morphology of the worn surfaces and the debris was analyzed by scanning electron microscope, and the oxides of worn surfaces caused by friction heat were detected by X-ray diffraction. The experiment results reveal that the friction coefficient of frictional pairs declines with increasing load and speed. With the speed and load increasing, oxides of the worn surfaces of 18Ni(300) maraging steel change from FeO to Fe3O4 and the wear mechanism converts from adhesive wear into severe oxidative or extrusion wear. View Full-Text
Keywords: 18Ni(300) maraging steel; friction coefficient; oxides; wear mechanism 18Ni(300) maraging steel; friction coefficient; oxides; wear mechanism
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Sun, K.; Peng, W.; Wei, B.; Yang, L.; Fang, L. Friction and Wear Characteristics of 18Ni(300) Maraging Steel under High-Speed Dry Sliding Conditions. Materials 2020, 13, 1485.

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