Article
Materials Science, Multidisciplinary
Chia-Yu Lee, Jeou-Long Lee, Shun-Yi Jian, Chi-An Chen, Salim Levent Aktug, Ming-Der Ger
Summary: This study investigates the addition of fluoride to the electroless nickel-phosphorus plating solution to improve the corrosion resistance of MAO-coated AZ31B magnesium alloy. Fluoride reacts with Ni2+ ions and the MAO coating to form interphases, which enhance bonding and corrosion resistance. The presence of fluoride in the plating solution results in a more corrosion-resistant coating. The composition, structure, and morphology of the coatings are characterized using various analytical techniques, and their corrosion resistance is evaluated using different tests.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
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
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
Materials Science, Multidisciplinary
Shiliang Zhang, Wei Guo, Ning Liu, Chaoqun Xia, Hongshui Wang, Chunyong Liang
Summary: The research successfully developed a method to add a TiO2 layer on the MAO coating of WE43 alloy, effectively improving the anti-corrosion performance of the coating, reducing the corrosion current density, and proposing the anti-corrosion mechanism of the composite coating.
Article
Metallurgy & Metallurgical Engineering
Jun-xiu Chen, Yang Yang, Iniobong P. Etim, Li -li Tan, Ke Yang, R. D. K. Misra, Jian-hua Wang, Xu-ping Su
Summary: The addition of nano-Y2O3 to micro-arc oxidation coating on magnesium alloys improves the wear resistance and degradation resistance. The nano-Y2O3 particles stabilize the coating and seal the micro-pores, resulting in improved coating properties. The degradation rate and volume loss of the coating are significantly reduced.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Chemical
Chi-An Chen, Jeou-Long Lee, Shun-Yi Jian, Chia-Yu Lee, Ming-Der Ger
Summary: This study uses micro-arc oxidation (MAO) and electroless nickel-phosphorus (Ni-P) plated composite film to improve the corrosion resistance of LZ91 magnesium alloy. The results show that activation by a neutral catalyst (pH=7) maintains the original structure of the MAO coating and provides a good bonding interface for the Ni-P coating, which produces a compact and excellent corrosion resistance composite coating that provides better protection for LZ91 magnesium alloy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Materials Science, Multidisciplinary
Dongdong Song, Hongxia Wan
Summary: Currently, the main focus of research on improving the corrosion resistance of Mg alloys is on optimizing the pore structure of MAO coatings, while neglecting the bonding between the coating and the substrate. This study obtained MAO coatings with different porosity and adhesion strength in phosphate and silicate electrolytes at different voltages. The structure, chemical composition, mechanical properties, and corrosion resistance of the coatings were analyzed, and the influence of porosity and adhesion on corrosion resistance was studied. The findings provide valuable information for obtaining longer corrosion resistance MAO coatings.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
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
Chemistry, Physical
Mingjin Wu, Feng Jiang
Summary: Ceramic films with graphite oxide particles were prepared on an aluminum alloy using the micro-arc oxidation technique. The addition of graphite oxide improved the corrosion resistance and adhesion of the ceramic film to the metal substrate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xiaofeng Wan, Chuang Tian, Yi Li, Jingling Zhou, Shuangqing Qian, Lihong Su, Li Wang
Summary: The effect of Y2O3 addition on the microstructure and properties of laser cladded Al-Si alloy coating on AZ91D magnesium alloy surface was investigated. The experimental results showed that the cladding layers with Al-Si + Y2O3 contained alpha-Mg, Mg2Si, Al4MgY, and a small amount of Al12Mg17 phases. The coarse dendrites, reticulated eutectic structures, and massive phases in the coatings were refined and distributed more uniformly with the increased amount of Y2O3. Y2O3 addition improved the microhardness, wear resistance, and corrosion resistance of the coatings.
Article
Chemistry, Physical
Yingqiao Zhang, Jie Guo, Gangdong Xu, Zhiyong Li, Shouzheng Wei
Summary: The laser cladding method is an effective approach to improve the surface properties of Mg and Mg alloys by preparing amorphous matrix composite coatings. The corrosion and wear resistance of these coatings are significantly influenced by rare earth elements, which affect the quantity, morphology, and distribution of crystalline phases. The presented work focused on preparing Zr55Cu30Al10Ni5 + x wt% Nd2O3 (x = 0, 0.5, 1, 1.5, 2, 3) composite coatings on AZ91D Mg alloy through laser cladding. The coatings consisted of dendrites, cellular grains, Nd enriched spherical structure, and amorphous matrix. Addition of appropriate Nd2O3 could refine crystalline microstructure size, purify oxygen impurities, and increase amorphous content, but excessive addition caused aggregation and abnormal growth of crystalline phases, deteriorating the glass forming ability. The coating with 1.5 wt% Nd2O3 exhibited the highest amorphous content, lowest crystalline phase content, and the most excellent corrosion resistance. The wear resistance of the coatings was greatly improved compared to the Mg substrate, but not linearly related to hardness and did not fully follow Archard's wear equation.
APPLIED SURFACE SCIENCE
(2023)
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, Coatings & Films
Shiliang Zhang, Xianrui Zou, Ning Liu, Hongshui Wang, Chaoqun Xia, Chunyong Liang
Summary: Micro-arc oxidation combined with tantalum oxide has been found to effectively control the corrosion rate of magnesium. The addition of tantalum oxide seals the micro defects in the MAO coating and acts as a physical barrier. The composite coating shows significantly improved corrosion resistance in terms of current density, pH value, and weight loss.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Luyao Xu, Naiyu Liu, Lei Cao, Yong Wan
Summary: The study found that MAO coatings produced in electrolytes containing both Na2SiO3 and Na2B4O7 exhibited superior corrosion resistance and tribocorrosion performance in simulated body fluid (SBF).
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Ke Shan, Runping Li, Jianhua Liu
Summary: Magnesium-aluminum spinel (MAS) precursor powder was synthesized through a microwave hydrothermal method. The study revealed the synergistic effects of sintering process and sintering aids on the densification, hardness, and corrosion resistance of MAS. Under the best sintering conditions, the prepared MAS composite ceramics demonstrated high relative density, uniform grain size, high hardness, and low corrosion depth.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Electrochemistry
Wenhai Tan, Youfeng Zhang, Yichen Zhang, Yanbo Ma, Chao Zhao, Yinling Wang
Summary: This study synthesized Co3O4/CC cathode materials with excellent performance for aqueous zinc-ion batteries by varying the reactant concentration. The Co3O4/CC nanowires exhibited uniform distribution, regular surface, and small size on the carbon cloth. The battery assembled with Co3O4/CC material synthesized at a reactant concentration ratio of 2:1 showed better performance, with high discharge specific capacity and capacity retention rate.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2024)
Article
Electrochemistry
T. Salahuddin, Iqra Kousar, Mair Khan, M. Munawwar Iqbal Ch
Summary: This paper investigates the dynamics of fluid motion powered by cilia within a curved channel and examines the chemical reactions occurring in the presence of electro-osmotic impact. The findings offer insights into various flow characteristics and present a method for simulating non-Newtonian fluid models in three dimensions. Additionally, the model has potential applications in the development of micro-vascular chips, which could be crucial for diagnosing blood-related issues.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2024)
Review
Electrochemistry
Ahmed Abou-Shady
Summary: Soil electrokinetic (SEK) is a significant technology with various applications in fields such as soil remediation, pollutant removal, and water regulation. This review summarizes the recent advancements in SEK, focusing on electrode modifications and material additives, and suggests future research directions.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2024)
