Article
Materials Science, Coatings & Films
Runjia Liu, Yan Liu, Qiwen Yong, Zhi-Hui Xie, Liang Wu, Chuan-Jian Zhong
Summary: The long-term corrosion resistance of conventional micro-arc oxidation (MAO) coatings on magnesium alloy is limited by the inherent micro-scale pores. Zeolitic imidazolate framework-8 (ZIF-8) and zinc gluconate (ZnG) loaded ZIF-8 (ZnG@ZIF-8) were synthesized and incorporated into the MAO coating to enhance the corrosion resistance. The (ZIF-8 + ZnG@ZIF-8)/MAO composite coating showed significant improvement in corrosion protection compared to the blank MAO coating.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jiyuan Zhu, Haojie Jia, Kaijin Liao, Xianxuan Li
Summary: The study improved the corrosion resistance and friction resistance of magnesium alloy micro-arc oxidation coatings by sealing with hydrothermal treatment and heat treatment, enhancing their performance in 3.5 wt% NaCl aqueous solution. This method is of great significance for promoting the application of magnesium alloys in industrial production.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jing Wang, Jinhe Dou, Zhongchao Wang, Cheng Hu, Jiurong Liu, Huijun Yu, Chuanzhong Chen
Summary: The influence of sodium fluoride (NaF) concentration in silicate basic electrolyte on the corrosion resistance and biodegradability of micro-arc oxidation (MAO) coatings on Mg2Zn-Mn (ZM21) alloys was investigated. The results showed that increasing NaF concentration to 1.0 g/L resulted in a thicker and more hydrophilic MAO coating. Adding 1.0 g/L NaF enhanced corrosion resistance and adhesion, while excessive NaF concentration (> 1.0 g/L) reduced breakdown voltage and degraded coating quality. The MAO samples demonstrated reduced weight loss rate and pH value after immersion, indicating certain biological safety; and cytotoxicity and cell adhesion tests confirmed their biocompatibility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Coatings & Films
Shih-Yen Huang, Yu-Ren Chu, Shun-Han Yang, Yueh-Lien Lee
Summary: This study is the first to examine the role of pause time following anodic and cathodic polarization in a MAO process for magnesium alloys. The results demonstrate that anodic pause time enhances the corrosion resistance of these alloys compared to their cathodic counterpart.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jing Wang, Zhongchao Wang, Jinhe Dou, Yongkang Li, Cheng Hu, Huijun Yu, Chuanzhong Chen
Summary: In this study, Mg-2Zn-Mn alloy was surface modified using micro-arc oxidation (MAO) technique. The influence of potassium fluotitanate (K2TiF6) concentration in silicate basic electrolyte on the corrosion resistance and degradation of MAO coatings was investigated. It was found that TiF62- has a thickening effect on the coatings, and adding 0.25 and 0.50 g/L K2TiF6 results in better corrosion resistance. TiF62- concentration also affects the coating quality through the generation of F-. Anatase TiO2 formed by ionization of TiF62- plays a role in sealing the micro-pores of the MAO coating. The surface-modified Mg alloy exhibits improved hydrophilicity, reduced weight loss rate and pH value after immersion, and improved biocompatibility.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yuna Xue, Xin Pang, Seyyed Mohamad Hasan Karparvarfard, Hamid Jahed, Sheji Luo, Yi Shen
Summary: The influences of forging process and micro-arc oxidation (MAO) coating on the corrosion behavior of ZK60 wrought magnesium alloys were investigated. The results showed that forging temperature affected the microstructure and corrosion resistance of the alloy. The MAO coating provided effective corrosion protection and improved stress-corrosion resistance.
Article
Materials Science, Biomaterials
Yanping Liu, Xian Cheng, Xiyuan Wang, Qiu Sun, Chenxi Wang, Ping Di, Ye Lin
Summary: The calcium metaphosphate (CMP) coating fabricated on magnesium alloy using sol-gel approach assisted with microarc oxidation pre-treatment significantly improves the corrosion resistance and promotes the adhesion and osteogenic cell activity of bone marrow stem cells.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Xinxin Jin, Di Mei, Dongfang Chen, Yaqian Li, Liguo Wang, Shijie Zhu, Shaokang Guan
Summary: Incorporating degradable calcium phosphate beta-TCP in the MAO coating enhances the corrosion resistance and biocompatibility, providing a strategy to improve the properties of magnesium alloy for orthopedic applications.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Ruozheng Wang, Chen Zhao, Zhenjun Peng, Xiaoyan Yan, Yuchen Sun, Qiangliang Yu, Bo Yu, Meirong Cai, Feng Zhou
Summary: A multifunctional organic/inorganic hybrid coating was prepared on AZ31 magnesium alloy by microarc oxidation and vapor deposition of Polyp-xylene. The coating exhibited excellent corrosion resistance and lubricating properties, offering promising application prospects for surface protection of magnesium alloys.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Orthopedics
Jieyang Dong, Jiaqi Zhong, Ruixia Hou, Xiaodong Hu, Yujiong Chen, Hangbin Weng, Zhewei Zhang, Botao Liu, Shengbing Yang, Zhaoxiang Peng
Summary: In this study, a poly (1,3-trimethylene carbonate) (PTMC) and polydopamine (PDA) bilayer and micro arc oxidation composite coatings were successfully prepared on the surface of magnesium implants. The corrosion resistance and biocompatibility of the coatings were evaluated through in vitro and in vivo experiments. The results showed that the composite coating exhibited excellent corrosion protection and biocompatibility.
JOURNAL OF ORTHOPAEDIC TRANSLATION
(2023)
Article
Chemistry, Physical
Shuaikang Yang, Chen Wang, Fuzhen Li, Naihao Liu, Putong Shi, Baojin Wang, Ruixue Sun
Summary: Micro-arc oxidation (MAO) is an effective and environmentally friendly method for generating dense and homogeneous coatings with high corrosion resistance on magnesium alloys. However, the porous structure of MAO coatings can lead to reduced corrosion resistance due to the invasion of corrosive media. In this study, a novel one-step in situ growth of a pore-sealing coating on MAO-coated AZ31B alloy was achieved by hydrothermal treatment. The resulting coating effectively seals the micro-pores and micro-cracks of the MAO coating and exhibits improved corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Dongjie Liu, Jing Liu, Guangyu Liu, Yuntao Xie, Zongfan Duan
Summary: The corrosion resistance of micro-arc oxidation coating can be enhanced by surface modification. In this study, LDH/MAO film with a micro-/nano-structure is formed on AZ31 magnesium alloy surface by controlling the composition and concentration of the hydrothermal solution. A superhydrophobic surface is achieved by coating an OTES modifier on the LDH/MAO film. The composite coatings exhibit improved corrosion resistance due to the sealing of defects and superhydrophobic effect.
Article
Biochemistry & Molecular Biology
Tianlu Li, Yun Zhao, Minfang Chen
Summary: The study investigated the influence of different treating current densities on the corrosion resistance and photo-thermal antibacterial properties of micro-arc oxidation coatings. The results showed that a current density of 30 A·dm(-2) exhibited the best performance in terms of corrosion resistance, light absorption capacity, photo-thermal capability, and antibacterial activity against S. aureus and E. coli.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Mariya B. Sedelnikova, Anna Ugodchikova, Tatiana Tolkacheva, Valentina V. Chebodaeva, Ivan A. Cluklhov, Margarita A. Khimich, Olga Bakina, Marat Lerner, Vladimir S. Egorkin, Juergen Schmidt, Yurii P. Sharkeev
Summary: Biodegradable materials and calcium silicate-based ceramics are important materials for implants in reconstructive medicine. Research has shown that silicate biocoatings formed on a Mg0.8Ca alloy exhibit remarkable anti-corrosion properties and reduce the toxicity of the alloy.
Article
Materials Science, Coatings & Films
Yanning Chen, Liang Wu, Wenhui Yao, Zhiyong Zhong, Yonghua Chen, Jiahao Wu, Fusheng Pan
Summary: The research focused on enhancing the anti-corrosion performance of MAO coating by preparing GO/LDH-MAO composite coating on AZ31 magnesium alloy. The organic combination of Mg-Al LDH and GO significantly improved the corrosion protection ability of the coating, revealing promising potential for practical large-scale applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Yajiang Chen, Ai-Xi Chen, Xiaobing Luo
Summary: This work demonstrates how the current phase transition of atomic Bose-Einstein condensates in a trap can be controlled by applying an oscillatory driving field. The self-trapping effect in momentum space allows for a suppression of oscillations and a nearly constant directed current. Mean-field chaos serves as an indicator of the quantum phase transition. These findings are supported by an effective three-mode model.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinqin Ye, Yi Li, Jun Ding, Heng Yu, Xianqi Dai
Summary: Constructing van der Waals heterostructures is an efficient approach to enhance the properties and broaden the applications of two-dimensional materials. This study explores the structure, stability, electronic, and optical properties of BlueP/MoSSe heterostructures using density functional theory calculations. It is found that the bandgap and band edge of these heterostructures can be effectively modulated by strain and electric field.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Simone Anzellini, Silvia Boccato, Samuel R. Baty, Leonid Burakovsky, Daniele Antonangeli, Daniel Errandonea, Raffaella Torchio
Summary: The melting line of cobalt was investigated through experimental and theoretical methods, revealing a phase transition from hexagonal close-packed structure to face-centered cubic structure at high temperatures. The melting temperatures obtained from both methods showed good agreement and can be described by a Simon-Glatzel equation. Additionally, a thermal equation of state for the face-centered cubic phase of cobalt was determined.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jiajuan Qing, Shisheng Zhou, Jimei Wu, Mingyue Shao
Summary: This paper investigates the nonlinear chaotic vibrations of fractional viscoelastic PET membranes subjected to combined harmonic and variable axial loads. The viscoelasticity of PET membrane is characterized by the fractional Kelvin-Voigt model. The reliability of the numerical strategy is proved by comparing the results with available fractional systems and examples. The influence of system parameters on chaotic behaviors is described using bifurcation diagrams and detailed responses. This research provides a fundamental framework for controlling viscoelastic substrates in flexible manufacturing.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aly R. Seadawy, Syed T. R. Rizvi, Bazgha Mustafa, Kashif Ali
Summary: In this research, the complete discriminant system of polynomial method is used to analyze the dynamic characteristics of the cubic-quintic nonlinear Schrodinger equation with an additional anti-cubic nonlinear term, with a focus on the introduction of various optical solitons and wave structures. The analysis illustrates the importance of the polynomial method and provides dynamic results for the solutions.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Ruihang Huang
Summary: This study utilized bibliometric analysis to examine the development of multi-scale calculation of carbon nanotubes. Using CiteSpace III software, 1253 relevant articles from the SCI Expanded database were analyzed to identify research trends in this field. The findings revealed significant progress in the research of multi-scale calculation of carbon nanotubes from 1999 to 2023. The analysis of keywords, literature co-citation network, and keyword cluster network provided valuable insights into the knowledge base, important research results, and research hotspots in this field. Additionally, the study predicted future hot research directions using keyword breakout analysis. The research provides profound insights and important guidance for researchers and policymakers in the field of multi-scale calculation of carbon nanotubes to promote further innovation and development.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Zhou, Erhu Zhang, Shumin Zhao, Lei Zhang
Summary: A theoretic model is proposed to study the adhesion behavior of a vesicle adhering inside another vesicle in 2-D case. The model investigates the equilibrium shape equations and boundary conditions, and reveals the phase diagram and critical adhesion condition in different situations.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xin Yi, Jia-Cheng Huo, Yong-Pan Gao, Ling Fan, Ru Zhang, Cong Cao
Summary: The paper introduces an iterative quantum algorithm based on quantum gradient descent to solve combinatorial optimization problems, verifying the effectiveness and robustness of the algorithm through numerical simulations and comparison with other algorithms. Experimental results on a real quantum computer also demonstrate the feasibility and performance of the algorithm.
RESULTS IN PHYSICS
(2024)