钛及其合金的腐蚀机理及影响因素  

Corrosion mechanism and influencing factors of titanium and its alloys

作　　者：滕洪辉[1,2] 张萌[1] 钟铭 李昂[1] 戴昕东 李泽慧 张大鹏 TENG Hong-hui;ZHANG Meng;ZHONG Ming;LI Ang;DAI Xin-dong;LI Ze-hui;ZHANG Da-peng(College of Engineering,Jilin Normal University,Siping 136000,China;Key Laboratory of Environmental Materials and Pollution Control,the Education Department of Jilin Province,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学工程学院,吉林四平136000 [2]吉林师范大学吉林省高校环境材料与污染控制重点实验室,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2024年第3期1-7,共7页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技发展计划项目(20190303071SF);吉林省教育厅科学技术研究项目(JJKH20210460KJ)。

摘　　要：尽管钛及其合金具有良好的抗腐蚀性能,但是在实际使用过程中依然会发生腐蚀.揭示腐蚀机理并明确腐蚀相关因素对于钛及其合金腐蚀防护具有重要意义.研究发现钛及其合金腐蚀机理比较复杂,存在点蚀、电偶腐蚀、缝隙腐蚀、磨损腐蚀以及应力腐蚀等几种机理,虽然在不同的应用领域腐蚀机理可能不同,但是这几种机理都与表面氧化层破坏有关系.在不同的工况条件下引发氧化层破坏的因素也存在差别,既有外部力量破坏的物理因素,如摩擦力、应力等;也有活性离子侵蚀的化学因素,如氟离子、氯离子、硝酸根离子等,在某些情况下往往是二者协同作用,加速钛及其合金的腐蚀.因此,分析钛及其合金在不同应用领域中的腐蚀机理和相关因素,有针对地研究相应的表面层防护技术,是钛及其合金腐蚀防护领域的一个重要方向.Although titanium and its alloys exhibit excellent corrosion resistance,corrosion still occurs in practical applications.Unveiling the corrosion mechanisms and identifying the corrosion-related factors are of paramount importance for corrosion protection of titanium and its alloys.Research has revealed that the corrosion mechanisms of titanium and its alloys are rather complex,involving pitting corrosion,galvanic corrosion,crevice corrosion,wear corrosion,and stress corrosion,among others.Although corrosion mechanisms may vary in different application fields,these mechanisms are all related to the destruction of the surface oxide layer.Factors causing the breakdown of the oxide layer under different operating conditions also vary,including both physical factors such as frictional forces and stress,and chemical factors such as fluoride ions,chloride ions,and nitrate ions.In some cases,these factors act synergistically,accelerating the corrosion of titanium and its alloys.Therefore,analyzing the corrosion mechanisms and related factors of titanium and its alloys in different application fields and conducting targeted research on corresponding surface layer protection techniques are important directions in the field of corrosion protection for titanium and its alloys.

关 键 词：钛 钛合金 腐蚀 化学因素 物理因素 

分 类 号：TH3[机械工程—机械制造及自动化]