Article
Engineering, Mechanical
Ying Xiong, Liuyong He
Summary: The surface treatment of AZ80 magnesium alloy using MAO and LSP/MAO techniques can improve its fatigue life under different pH environments. The positive or negative value of the ratcheting strain reflects the mechanism of cyclic deformation, and a higher absolute value of the ratcheting strain indicates a lower fatigue life.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Physics, Multidisciplinary
Mingjin Wu, Feng Jiang
Summary: This study proposes a new type of CeO2-sealed GO/Al2O3 composite film with excellent corrosion resistance on 5B70 Al alloy by integrating MAO and the hole sealing technique. The experimental results indicate that the MAO ceramic film serves as both a "shield" and a "reservoir" to achieve improved impedance and corrosion inhibitor loading.
Article
Chemistry, Physical
Xuejian Wang, Yubo Zhang, Enyu Guo, Zongning Chen, Huijun Kang, Xueqin Liu, Pei Han, Tongmin Wang
Summary: The addition of indium was found to enhance the bio-corrosion resistance of Mg-5Sn-xIn alloys, leading to a decrease in corrosion rate without inducing cytotoxicity to cells. Mg-5Sn-4In alloy exhibited the minimum corrosion rate and improved cytocompatibility, making indium an effective alloying element for tuning the corrosion properties of Mg-Sn based alloys for biomedical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Coatings & Films
Xue Zhang, Lin Zhou, Shao-Dong Cui, Jing-Bao Lian, Jiao He, Xiao-Wu Li
Summary: A Ca-P sealing coating was prepared on the surface of microarcoxidation coating (MAO)-coated Mg, which significantly improved the corrosion resistance and biodegradability of the coated magnesium. The Ca-P coating also facilitated the deposition of osteoconductive minerals.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Biomedical
Julia Gao, Yingchao Su, Yi-Xian Qin
Summary: This study compared the in vitro and in vivo degradation and biocompatibility behaviors of magnesium alloys with calcium phosphate coatings, showing that the CaP coating significantly improved biodegradation behavior and biocompatibility of the Mg alloy. In vitro tests were found to be a quick screening tool for biodegradation rate, with the in vivo degradation rate being slower than in vitro immersion degradation rate.
BIOACTIVE MATERIALS
(2021)
Article
Biophysics
Jingyao Li, Jian Li, Nian He, Qingyun Fu, Mingcheng Feng, Qingyang Li, Qiong Wang, Xiangning Liu, Shu Xiao, Weihong Jin, Zhentao Yu, Paul K. Chu
Summary: Zinc-incorporated calcium phosphate coatings effectively reduce corrosion of Mg alloys and exhibit good biocompatibility and self-repair capability.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Metallurgy & Metallurgical Engineering
Chunyan Zhang, Shiyu Zhang, Dongwei Sun, Jiajia Lin, Fancheng Meng, Huinan Liu
Summary: A superhydrophobic surface was prepared on fluoride-treated AZ31 alloy, showing higher barrier properties and corrosion resistance compared with other coatings. The coating also displayed non-toxicity to BMSC and enhanced cell proliferation, while inhibiting cell adhesion.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
Siqin Liu, Guihua Li, Yuming Qi, Zhenjun Peng, Yinping Ye, Jun Liang
Summary: In this paper, a multi-functional composite coating with low friction coefficient, high wear resistance, and excellent tribocorrosion resistance is fabricated on AZ31 Mg alloys. The composite coating exhibits better long-term corrosion resistance and wear and tribocorrosion resistance compared to the single micro-arc oxidation (MAO) coating. It can effectively protect the substrate from corrosion under sliding conditions.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Biochemistry & Molecular Biology
Mariana Branquinho, Sheila O. Ferreira, Rui D. Alvites, Adriana F. Magueta, Maxim Ivanov, Ana Catarina Sousa, Irina Amorim, Fatima Faria, M. H. Fernandes, Paula M. Vilarinho, Ana Colette Mauricio
Summary: This study evaluated medical devices made of 316L stainless steel with a PLLA coating for mechanical and functional support for bone injuries. Results showed superior outcomes both in vitro and in vivo, suggesting that the PLLA coating may have osteo-inductive properties.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
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, Applied
Yingchao Xu, Tianxiao Wang, Xingyuan Qu, Ziqi Liu, Yunting Guo, Guangyu Li, Zhihui Zhang, Jianshe Lian, Luquan Ren
Summary: A composite coating with excellent performance was successfully synthesized in this study, which can significantly improve the corrosion resistance and degradation rate of magnesium (Mg) alloy, and has good biocompatibility and antibacterial properties.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Engineering, Mechanical
Xuejiao Jia, Jiangfeng Song, Libin Zhao, Bin Jiang, Hong Yang, Tiantian Zhao, Hua Zhao, Qiang Liu, Fusheng Pan
Summary: This study investigated the effect of surface indentation size on the corrosion behaviour of MAO coated AZ80 magnesium alloy. Various techniques, including laser confocal microscope, scanning electron microscope, X-ray diffractometer and electrochemical test, were used to study the corrosion process and damaged coatings. The results showed that the corrosion current density increased when the MAO coating was damaged with a certain impact height. Furthermore, the corrosion mechanism for coatings with different indentation sizes was clarified.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Chemistry, Physical
Dongdong Zhang, Ji Tan, Huihui Du, Shi Qian, Xuanyong Liu
Summary: The study revealed that the ferric hydroxide coating on magnesium alloy exhibited the best corrosion resistance and surpassed other coatings in terms of biocompatibility. This suggests that the ferric hydroxide coating could serve as a novel potential coating for modification of magnesium-based implants.
APPLIED CLAY SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Haili Zhou, Jingyao Li, Jian Li, Qingdong Ruan, Xiang Peng, Shuangjian Li, Weihong Jin, Zhentao Yu, Paul K. Chu, Wei Li
Summary: A composite coating composed of PLLA/APTES/hydroxide nanosheets was successfully prepared on magnesium alloy surface to enhance corrosion resistance and cytocompatibility. The coating structure design effectively retards the corrosion rate by increasing chemical bonding active sites and physical interlocking properties, demonstrating improved protection against corrosion of magnesium alloy.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Biophysics
Changjiang Pan, Yongjuan Zhao, Ya Yang, Minghui Yang, Qingxiang Hong, Zhongmei Yang, Qiuyang Zhang
Summary: This study successfully enhanced the corrosion resistance and biocompatibility of magnesium alloy using graphene oxide composite and modified coating, with additional effects including anti-thrombus, promotion of endothelial cell adhesion and proliferation, antibacterial properties, among others.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)