Article
Materials Science, Multidisciplinary
Yingjun Zhang, Shuai Xiao, Jie Wen, Xinyu Liu, Baojie Dou, Liu Yang
Summary: The study focuses on the effect of preparation methods of PANI and GO composite powders on the protective performance of epoxy coatings for magnesium alloys. The results show that the coating prepared with PANI and GO composite powders by in situ polymerization exhibits higher impedance value, better flexibility, impact resistance, and adhesion strength compared to coatings prepared with pure PANI or PANI and GO mixed powders.
Article
Materials Science, Multidisciplinary
Yu-Jui Lin, Chao-Sung Lin
Summary: The corrosion behavior and corrosion rate of friction stir welded AZ31B magnesium alloy and 6N01 aluminum alloy dissimilar joints were studied using real-time imaging, potentiodynamic polarization, EIS, and hydrogen evolution tests. The corrosion rate was found to increase in the order of Al base metal < Mg base metal < stirred zone. The galvanic coupling of the Mg phase to other phases enhanced the corrosion of both base metals, and intense corrosion at BM-AZ31B elevated the interfacial pH due to water reduction on the cathodic particles of BM-6N01.
Article
Biochemistry & Molecular Biology
Iryna Kozina, Halina Krawiec, Maria Starowicz, Magdalena Kawalec
Summary: Spin coating technique was used to deposit chitosan coatings on the surface of Mg20Zn magnesium alloy, resulting in increased corrosion resistance by forming CaSiO3 and Ca-3(PO4)(2) compounds on its surface. Corrosion rate was reduced from 3.2 mm/year to 1.2 mm/year for uncoated and coated substrates, respectively.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Engineering, Biomedical
Kerstin van Gaalen, Conall Quinn, Felix Benn, Peter E. McHugh, Alexander Kopp, Ted J. Vaughan
Summary: This study presents a computational framework that investigates the effect of localised surface-based corrosion on the mechanical performance of a magnesium-based alloy. Using a verified corrosion modelling approach, a quantitative relationship between mechanical integrity and corrosion features was established, with the minimal cross-sectional area parameter being the strongest predictor.
BIOACTIVE MATERIALS
(2023)
Article
Chemistry, Physical
Zuzana Gabalcova, Peter Gogola, Zaneta Gerhatova, Marian Palcut
Summary: In this study, the corrosion behavior of Mg2Sn alloy in different corrosion media was investigated. The highest corrosion rate was observed in the HCl solution, while the corrosion rate decreased with increasing pH of the electrolyte. Passivation of the alloy was observed in the NaOH solution. The corrosion of the alloy involved simultaneous oxidation of magnesium and tin.
Article
Chemistry, Physical
Guang-Ling Yang, Yuejun Ouyang, Zhi-Hui Xie, Yue Liu, Wenxin Dai, Liang Wu
Summary: This study introduces a new photoelectrochemical cathodic protection technology that can indirectly protect metals with low corrosion potential by introducing an interlayer with high corrosion potential between the substrate and semiconductor. This methodology, demonstrated on a magnesium alloy, is not limited to specific metals and has the potential to be applied to other structural metals with low corrosion potential.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Pingli Jiang, Ruiqing Hou, Shijie Zhu, Shaokang Guan
Summary: A CaCO3 coating was developed by hydrothermal treatment to enhance the anti-corrosion property of biodegradable magnesium alloy. The coating showed excellent corrosion protection and a possible transformation during immersion.
Article
Materials Science, Coatings & Films
Joel da Silva Rodrigues, Leonardo Marasca Antonini, Antonio Alexandre da Cunha Bastos, Jie Zhou, Celia de Fraga Malfatti
Summary: The study applied plasma electrolytic oxidation (PEO) to create a coating on a magnesium alloy, ZK30, enhancing its corrosion resistance and wear resistance for potential orthopedic applications involving friction and wear. This technology has shown promising results in reducing hydrogen release, decreasing susceptibility to localized corrosion, and altering surface topography and chemistry.
SURFACE & COATINGS TECHNOLOGY
(2021)
Review
Chemistry, Physical
Xiaodong Xue, Chunyong Liang, Donghui Wang, Feng Peng
Summary: Magnesium and its alloys have excellent mechanical properties and biodegradability, making them promising candidates in industrial and biomedical fields. However, their rapid corrosion limits their widespread applications. The development of self-healing coatings is essential to repair the damage and enhance their corrosion protection ability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Pingli Jiang, Zihao Zeng, Ruiqing Hou, Di Mei, Shijie Zhu, Liguo Wanga, Shaokang Guan
Summary: In this study, a CaCO3 coating on Mg alloy was developed to control the corrosion of Mg2Zn0.2Ca alloy. The presence of MgSO4 in the coating preparation electrolyte affected the morphology and anti-corrosion property of the CaCO3 protective coating. Increasing the concentration of MgSO4 enhanced the corrosion protection property of the coating by increasing its compactness, but further increase in MgSO4 concentration led to a decrease in resistance for the Mg substrate.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Applied
Carlos Henrique Michelin Beraldo, Almir Spinelli, Nico Scharnagl, Thiago Ferreira da Conceicao
Summary: This study investigated environmentally friendly coatings of chitosan-derivatives with natural aldehydes for corrosion protection of magnesium AZ31 alloy. The derivatives were characterized using FTIR and UV-Vis, and the coated samples were analyzed using SEM, potentiodynamic polarization and EIS. The results showed that increased modification degree led to decreased corrosion current density and swelling degree, while impedance modulus increased. The relationship between |Z| and swelling with modification degree was proposed for the first time.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Multidisciplinary
Hao Wu, Ke Xi, Yan Huang, Zena Zheng, Zhenghua Wu, Ruolin Liu, Chilou Zhou, Yao Xu, Hao Du, Yansheng Yin
Summary: This study develops an epoxy composite coating containing sericite nanosheets on the AZ31B Mg alloy using a one-step electrophoretic deposition method to improve corrosion resistance. The results show that this composite coating exhibits high corrosion resistance and significantly enhances the long-term anti-corrosion performance of the epoxy coating. This work provides new insights into the design of lamellar filler/epoxy coatings with superior anticorrosion performance and shows promise in the corrosion protection of magnesium alloys.
Article
Metallurgy & Metallurgical Engineering
B. Pillado, B. Mingo, R. del Olmo, E. Matykina, A. M. Kooijman, Y. Gonzalez-Garcia, R. Arrabal, M. Mohedano
Summary: Zinc aluminium (Zn-Al) and lithium aluminium (Li-Al) - layered double hydroxides (LDH) coatings with incorporated inhibitors (Li -, Mo- and W-based) were successfully synthesized on AZ31 Mg alloy. Zn -Al LDH W and Li -Al LDH Li showed the highest corrosion resistance and were selected for further evaluation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Biophysics
S. Thanka Rajan, Mitun Das, A. Arockiarajan
Summary: The study demonstrates that the development of niobium and niobium oxide thin films on Mg alloys using sputtering technique can improve the corrosion resistance and biocompatibility of the alloys. The thin-film coated Mg alloys exhibited good corrosion resistance and cell proliferation capability.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Pengyu Lin, Yunting Guo, Zhihui Zhang, Qing Wang, Zhongxiong Kang, Hongxiu Yang, Luquan Ren
Summary: Selective laser surface remelting can modify the microstructure of AZ91D magnesium alloy and improve its corrosion resistance. Different treatment patterns can be used to tailor the electrochemical behavior and achieve good corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Chemistry, Multidisciplinary
Rosalind J. Gummow, George Vamvounis, M. Bobby Kannan, Yinghe He
ADVANCED MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Sahadev Somasundaram, Mihail Ionescu, Bobby Kannan Mathan
Article
Materials Science, Multidisciplinary
Xiao-Li Fan, Yuan-Fang Huo, Chang-Yang Li, M. Bobby Kannan, Xiao-Bo Chen, Shao-Kang Guan, Rong-Chang Zeng, Quan-Li Ma
Article
Chemistry, Physical
Oluwole Kazum, Mihail Ionescu, Hossein Beladi, M. Bobby Kannan
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Materials Science, Multidisciplinary
Chang-Yang Li, Xiao-Lei Feng, Xiao-Li Fan, Xiao-Tong Yu, Zheng-Zheng Yin, M. Bobby Konnan, Xiao-Bo Chen, Shao-Kang Guan, Jun Zhang, Rong-Chang Zeng
ADVANCED ENGINEERING MATERIALS
(2019)
Article
Energy & Fuels
Michael Glenn, Bobby Mathan, Md Monirul Islam, Yaser Beyad, Jessica A. Allen, Scott W. Donne
Article
Engineering, Biomedical
Zhao-Qi Zhang, Li Wang, Mei-Qi Zeng, Rong-Chang Zeng, M. Bobby Kannan, Cun-Guo Lin, Yu-Feng Zheng
BIOACTIVE MATERIALS
(2020)
Article
Engineering, Chemical
Ali Al-Saadi, Bobby Mathan, Yinghe He
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2020)
Article
Green & Sustainable Science & Technology
Ali Al-Saadi, Bobby Mathan, Yinghe He
Article
Materials Science, Multidisciplinary
Gui-Jia Gao, Mei-Qi Zeng, En-Liang Zhang, Rong-Chang Zeng, Lan-Yue Cui, Dao-kui Xu, Feng-Qin Wang, M. Bobby Kannan
Summary: The microstructure and chemical compositions of solid solution-treated Mg-3Nd-1Li-0.2Zn alloy were investigated, and corrosion behavior was studied under different conditions. Results showed changes in grain size and volume fraction of the second phase under different treatments, with the formation of Nd-containing oxide film and dense corrosion product layer on the alloy surface.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
M. Bobby Kannan, Mohamed Rahuma, Hadis Khakbaz, Robert Melchers
Summary: This study evaluates the corrosion inhibition efficiency of thioridazine hydrochloride (TH), an antipsychotic drug, on mild steel in 1 M hydrochloric acid. The results show that TH significantly enhances the polarization resistance and reduces the corrosion current density of mild steel. Long-term exposure tests demonstrate that TH has a highly effective corrosion inhibition effect on mild steel.
Review
Metallurgy & Metallurgical Engineering
Lei Cai, Di Mei, Zhao-Qi Zhang, Yuan-ding Huang, Lan-Yue Cui, Shao-Kang Guan, Dong-Chu Chen, M. Bobby Kannan, Yu-feng Zheng, Rong-Chang Zeng
Summary: This review discusses the influence of bioorganic molecules on Mg degradation and the formation of protective coatings, as well as proposes research directions for exploring degradation mechanisms and the impact of bioorganic molecules on protective approaches for biomedical Mg alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Review
Metallurgy & Metallurgical Engineering
Ai-Meng Zhang, Praneesh Lenin, Rong-Chang Zeng, M. Bobby Kannan
Summary: Magnesium is a promising candidate metal for biodegradable implants due to its biodegradation tendency and excellent biocompatibility. However, the high degradation rate and localized degradation in physiological conditions are major challenges for its successful implant applications. Recent research has focused on coating hydroxyapatite (HAp), a biocompatible ceramic material, on magnesium-based materials to improve degradation resistance and biocompatibility.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Lei Cai, Xiang Song, Cheng-Bao Liu, Lan-Yue Cui, Shuo-Qi Li, Fen Zhang, M. Bobby Kannan, Dong-Chu Chen, Rong-Chang Zeng
Summary: This work presents the design and preparation of a novel organic-inorganic hybrid coating for corrosion protection of magnesium alloys. By incorporating polyvinyl alcohol (PVA) and neodymium nitrate (Nd(NO3)3) into the micro-arc oxidation (MAO) coating, the properties of the coating are improved and self-healing function is achieved.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Feng Li, Xiang Sun, Liang Song, M. Bobby Kannan, Fen Zhang, Lan-yue Cui, Yu-hong Zou, Shuo-qi Li, Cheng-bao Liu, Rong-chang Zeng
Summary: The influence of intermetallic Al-Mn particles on the corrosion behavior of in-situ formed Mg-Al layered double hydroxide (Mg-Al-CO32--LDH) steam coating on AZ31 Mg alloy was investigated. The results showed that the LDH-coated alloy pretreated with CA possessed the most compact surface and the maximum coating thickness, resulting in a significant decrease in corrosion current density.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)