载荷和电位对Ti-6Al-3Nb-2Zr-1Mo合金在海水中腐蚀磨损行为的影响

doi:10.11896/cldb.24010227

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Abstract Ti-6Al-3Nb-2Zr-1Mo (abbreviated as Ti80) alloy is a type of near-α Ti alloy specially designed for marine applications and is widely used in stress members, bolts, shafts and pressure and corrosion resistant housings for all types of offshore equipment. When used as a moving part in the marine environment, Ti80 inevitably undergoes tribocorrosion, but few studies have been reported on its tribocorrosion properties and the synergism between corrosion and wear. In this work, a method combining mechanics and electrochemistry was used to study the effects of load and electrode potential on the tribocorrosion properties of Ti80 alloy in artificial seawater. Metallographic microscopy, 3D optical profilometer, SEM, XRD, XPS, and Vickers hardness tester were used to characterize the microstructure, identify the surface composition, and determine the hardness changes of the worn area. In artificial seawater, the corrosion potential of Ti80 decreased from -276 mV under static condition to -551 mV under frictional condition (15 N), and the corrosion current density increased from 0.363 0 μA/cm² under static condition to 12.554 5 μA/cm² under friction condition (15 N). Friction and wear not only altered the corrosion tendency of Ti80 but also significantly accelerated the corrosion rate. Synergism analysis showed that the proportion of corrosion-accelerated wear component in the synergistic effect can reach 60.38%, indicating that corrosion has a more significant promoting effect on wear. However, the pure mechanical wear loss always dominated the total material loss (＞70%). This work can provide theoretical and data support for predicting the safe service life of Ti80 alloy components.

Key words： Ti80 alloy tribocorrosion electrochemical synergistic effect

Published: 25 March 2025 Online: 2025-03-24

CLC number:	TG172
	TG117

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	Articles by authors
	XIE Haomin
	LI Guangming
	HU Lingyue
	MAO Feixiong
	GONG Ke

Cite this article:

XIE Haomin,LI Guangming,HU Lingyue, et al. Influence of Load and Electrode Potential on the Tribocorrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo Alloy in Seawater[J]. Materials Reports, 2025, 39(6): 24010227-11.

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https://www.mater-rep.com/EN/10.11896/cldb.24010227 OR https://www.mater-rep.com/EN/Y2025/V39/I6/24010227

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