Effect of Ultrasonic Vibration on the Friction and Wear Properties of GCr15/45# Steel Frictional Pairs Lubricated by n-Al2O3 Additives

Yu Lin Qiao; Shan Lin Yang; Yan Zang; Xin Yu Dong; Qing Sheng Cui

doi:10.4028/www.scientific.net/AMR.538-541.1920

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Effect of Ultrasonic Vibration on the Friction and...

Effect of Ultrasonic Vibration on the Friction and Wear Properties of GCr15/45^# Steel Frictional Pairs Lubricated by n-Al₂O₃ Additives

Abstract:

The friction and wear properties of GCr15/45# steel frictional pairs lubricated by n- Al2O3 additives under ultrasonic vibration or not were studied. The scanning electron microscope(SEM), X-ray photoelectron spectroscopy(XPS) and energy dispersive spectrometer (EDS) were carried out to analyse the wear scar surface. The effect mechanism of ultrasonic vibration on friction pairs was discussed. The results indicated that ultrasonic vibration could decrease the friction and wear of GCr15/45# friction pairs, when the content of n-Al2O3 was 0.5wt%, the effect of ultrasonic vibration on friction pairs was most obvious. The friction coefficient, wear volume and wear scar depth under ultrasonic vibration decreased 10%, 34% and 13%, respectively. The friction reduction and anti-wear mechanism of n-Al2O3 was single “micro ball bearing” without ultrasonic vibration, and it changed to “micro ball bearing” and adsorption penetration film with ultrasonic vibration, so the friction coefficient and wear volume was reduced.