STUDY ON THE CORROSION RESISTANCE OF HOMOGENEOUS Mg-1Bi-0.5x (x=Nd,Ce,La) ALLOYS
Keywords:
rare earth elements, corrosion resistance, electrochemistry, corrosion product film
Abstract
Mg alloys are widely used in the aerospace and automotive industries, as well as in electronic products due to their low density and high specific strength. However, the poor corrosion resistance of Mg alloys limits their applications. Rare earth elements have been shown to improve the corrosion resistance of alloys. In this study, Mg-1Bi-0.5x (x = Nd, Ce, La) alloys were prepared by alloying with Bi, Nd, Ce, and La. The microstructure and corrosion behavior of Mg-1Bi-0.5x (x = Nd, Ce, La) alloys were investigated using X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM), hydrogen evolution tests, weight loss experiments, and electrochemical measurements. The results indicate that the Mg-1Bi-0.5Nd alloy exhibits higher corrosion potentials and lower corrosion current densities, indicating superior corrosion resistance. This improvement is attributed to the formation of a more stable and uniform film of corrosion products, which prevents further corrosion and enhances corrosion resistance.
References
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[3] Zoran Grubač, Ivana Škugor Rončević, Mirjana Metikoš-Huković, Corrosion properties of the Mg alloy coated with polypyrrole films, Corrosion Science,102,2016,310-316.
[4] Aneta Kania, Wirginia Pilarczyk, Magdalena M. Szindler, Structure and corrosion behavior of TiO2 thin films deposited onto Mg-based alloy using magnetron sputtering and sol-gel, Thin Solid Films, Volume 701,2020,137945.
[5] Behrouz Mohammad Hasani, Haman Hedaiatmofidi, Arman Zarebidaki, Effect of friction stir process on the microstructure and corrosion behavior of AZ91 Mg alloy, Materials Chemistry and Physics,267,2021,124672.
[6] Jie-xin NIU, Qiu-rong CHEN, Nai-xin XU, Zhong-ling WEI, Effect of combinative addition of strontium and rare earth elements on corrosion resistance of AZ91D Mg alloy, Transactions of Nonferrous Metals Society of China,18, 2008,1058-1064.
[7] De-yu DING, Yu-hang DU, Mei-fang TANG, Bo SONG, Ning GUO, Hong-ju ZHANG, Sheng-feng GUO.Corrosion and discharge behavior of Mg-Zn-Mn-Nd alloys as primary Mg-air batteries anode[J]. Transactions of Nonferrous Metals Society of China, 2023, 33 (07): 2014-2029.
[8] anrui Li, Zheng Wu, Jiali Wei, Pengpeng Wu, Yuezhong Zhang, Huajie Wu, Shangshang Liang, Hui Yong, Guangling Song, Daqing Fang, Baosheng Liu, Yinghui Wei, Enhanced corrosion resistance of Mg17Al12 compounds by Ce modification, Vacuum, 218,2023,112663.
[9] Hiba Azzeddine, Abdelkader Hanna, Achour Dakhouche, Lyacine Rabahi, Nico Scharnagl, Milan Dopita, François Brisset, Anne-Laure Helbert, Thierry Baudin, Impact of rare-earth elements on the corrosion performance of binary Mg alloys, Journal of Alloys and Compounds, 829,2020,154569.
[10] Wang Ya-xiao, Zhou Ji-xue, Yang Yuan-sheng. Effect of Bi addition on microstructures and mechanical properties of AZ80 Mg alloy[J]. Transations of Nonferrous Metals Society of China. 2011,711-716.
[11] Shi, Z.; Atrens, A. An innovative specimen configuration for the study of Mg corrosion. Corros. Sci. 2011, 53, 226–246.
[12] Mukhopadhyay A K .Nucleation of Ω Phase in an Al-Cu-Mg Alloy Containing Small Additions of Ag[J].Materials Transactions Jim, 2007, 38(5),478482.
[13] A.E. Coy, F. Viejo, P. Skeldon, G.E. Thompson,Susceptibility of rare-earth-Mg alloys to micro-galvanic corrosion,Corrosion Science, 52,2010, 3896-3906.
[14] K. D. Ralston, N. Birbilis; Effect of Grain Size on Corrosion: A Review. CORROSION 1 July 2010; 66 (7): 075005–075005–13.
[15] G.R. Argade, S.K. Panigrahi, R.S. Mishra,Effects of grain size on the corrosion resistance of wrought Mg alloys containing neodymium,Corrosion Science, 58,2012, 145-151.
[16] Iñigo Marco, Omer Van der Biest,Polarization measurements from a rotating disc electrode for characterization of Mg corrosion,Corrosion Science,Volume 102,2016,Pages 384-393.
[17] Banerjee S , Poria S , Sutradhar G ,et al.Corrosion behavior of AZ31-WC nano-composites[J].Journal of Mg and Alloys, 2019, 7(4).
[18] Zhang C, Zhang F, Song L, et al. Corrosion resistance of a superhydrophobic surface on micro-arcoxidation coated Mg-Li-Ca alloy[J]. Journal of Alloys and Compounds, 2017, 728:815-826.
[19] Seifiyan H, Sohi M H, Ansari M, et al. Influence of friction stir processing conditions on corrosion behavior of AZ31B Mg alloy[J]. Journal of Mg and Alloys, 2019, 7(4):605-616.
[20] Srinivasan A , Shin K S , Rajendran N .Applications of dynamic electrochemical impedance spectroscopy (DEIS) to evaluate protective coatings formed on AZ31 Mg alloy[J].Rsc Advances, 2015, 5(37):29589-29593.
[21] Sebastián Feliu, Alejandro Samaniego, Violeta Barranco, A.A. El-Hadad, Irene Llorente, Carmen Serra, J.C. Galván,A study on the relationships between corrosion properties and chemistry of thermally oxidised surface films formed on polished commercial Mg alloys AZ31 and AZ61,Applied Surface Science,295,2014,219-230.
Published
2024-12-03
How to Cite
1.
Du S, Jia Z, Mao Z, Niu X. STUDY ON THE CORROSION RESISTANCE OF HOMOGENEOUS Mg-1Bi-0.5x (x=Nd,Ce,La) ALLOYS. MatTech [Internet]. 2024Dec.3 [cited 2026Oct.11];58(6):755–764. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/1255
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