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

材料导报

2025, Vol. 39

Issue (6): 24010227-11 https://doi.org/10.11896/cldb.24010227

金属与金属基复合材料

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

谢浩民^1,2, 李光明³, 胡凌越³, 毛飞雄^2,*, 宫克^2,*

1 宁波大学材料科学与化学工程学院,浙江宁波 315211
2 中国科学院宁波材料技术与工程研究所,浙江宁波 315201
3 武汉第二船舶设计研究所,武汉 430064

Influence of Load and Electrode Potential on the Tribocorrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo Alloy in Seawater

XIE Haomin^1,2, LI Guangming³, HU Lingyue³, MAO Feixiong^2,*, GONG Ke^2,*

1 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
2 Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, China
3 Wuhan Second Ship Design and Research Institute, Wuhan 430064, China

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摘要 Ti-6Al-3Nb-2Zr-1Mo(Ti80)合金是一种专为海洋工程应用而设计的近α钛合金,广泛用于各类海工装备的受力构件、螺栓、轴及耐压耐蚀壳体。在海洋环境下作为运动部件时,Ti80不可避免地会发生腐蚀磨损,但目前鲜有对其腐蚀磨损性能及腐蚀磨损交互作用的研究报道。本工作通过力学-电化学结合的方法研究了载荷和电极电位对Ti80合金在人造海水中腐蚀磨损行为的影响,采用金相显微镜、3D光学轮廓仪、SEM、XRD、XPS、维氏硬度计等测试手段对材料磨损区域进行微观形貌表征、表面成分鉴定和硬度变化等测试。在人工海水中,Ti80的腐蚀电位由静态的-276 mV下降至摩擦条件(15 N)下的-551 mV,腐蚀电流密度由静态下的0.363 0 μA/cm²增大到摩擦条件(15 N)下的12.554 5 μA/cm²,摩擦磨损不仅改变了Ti80的腐蚀倾向并显著加速了材料腐蚀。交互作用分析表明,协同作用中腐蚀加速磨损量占比可达到60.38%,证明腐蚀对磨损的促进作用更加明显,但纯机械磨损损失始终主导总材料损失(＞70%)。本工作可为预测Ti80合金部件安全服役寿命提供理论与数据支持。

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	谢浩民
	李光明
	胡凌越
	毛飞雄
	宫克

关键词: Ti80合金腐蚀磨损电化学交互作用

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

出版日期: 2025-03-25 发布日期: 2025-03-24

ZTFLH:	TG172
	TG117

基金资助: 国家重点研发计划(2022YFC3103803);中国科学院国际合作项目(174433KYSB2020006);宁波市重点科技项目(2021Z079)

通讯作者: *毛飞雄,中国科学院宁波材料技术与工程研究所研究员、博士研究生导师。主要从事海洋腐蚀与防护方面的研究。
宫克,博士,中国科学院宁波材料技术与工程研究所助理研究员。主要研究方向为海洋材料的腐蚀与防护。maofeixiong@nimte.ac.cn;gognke@nimte.ac.cn

作者简介: 谢浩民,宁波大学材料科学与化学工程学院硕士研究生,在中国科学院宁波材料技术与工程研究所联合培养,目前主要研究领域为金属腐蚀磨损。

引用本文:

谢浩民, 李光明, 胡凌越, 毛飞雄, 宫克. 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[J]. 材料导报, 2025, 39(6): 24010227-11.
XIE Haomin, LI Guangming, HU Lingyue, MAO Feixiong, GONG Ke. Influence of Load and Electrode Potential on the Tribocorrosion Behavior of Ti-6Al-3Nb-2Zr-1Mo Alloy in Seawater. Materials Reports, 2025, 39(6): 24010227-11.

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https://www.mater-rep.com/CN/10.11896/cldb.24010227 或 https://www.mater-rep.com/CN/Y2025/V39/I6/24010227

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