Article
Materials Science, Coatings & Films
Xianyin Chen, Zhenqian Zhang, Youwen Duan, Xudong Wang
Summary: The effect of adding cobalt salt on the growth mechanism of coatings prepared on the surface of 2024 aluminum alloy by micro-arc oxidation was investigated. The addition of cobalt salt prolonged the spark discharge phase and achieved co-film formation. Changes in the physical composition, surface morphology, and chemical composition were studied using XRD, SEM, EDS, and XPS. The addition of cobalt salt significantly promoted the formation of alumina in the coating, leading to enhanced hardness and corrosion resistance. The coating prepared in cobalt-containing electrolyte for 60 minutes showed the best corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2023)
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
Materials Science, Multidisciplinary
Weibing Dai, Qiang Li, Chenguang Guo, Jianzhuo Zhang, Xinle Yang, Lijuan Zhao, Changyou Li
Summary: The influence mechanism of coating defects on the fatigue property of micro-arc oxidation (MAO) coated samples was studied in this paper. The stress analysis and experimental measurements revealed that the stress variation of the coatings played a critical role in the fatigue performance under different cyclic stresses. This study provided a reference for further exploring the fatigue property of samples with thick MAO coatings.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Hongda Zhu, Xuetian Li, Xiurong Guan, Zhongcai Shao
Summary: The study found that micro-arc oxidation enhanced molybdate coating has improved corrosion resistance, forming MgAl2O4 and MoSi2 phases, with the gradual formation of a ceramic film as the oxidation time prolongs.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Wei Gao, Jiangnan Liu, Jingpeng Wei, Yuhong Yao, Xiqun Ma, Wei Yang
Summary: This study introduced copper into the MAO coating on TC4 alloy to enhance its wear performance and antibacterial properties. The addition of copper created a porous structure with Cu mainly concentrated around micropores, forming CuO and Cu2O in the coating. Despite a reduction in hardness, the presence of Cu helped reduce friction and improve wear resistance in simulated seawater. Additionally, the antibacterial effects of Cu were evident in the coating.
Article
Materials Science, Multidisciplinary
Pengxiang Lv, Xiaozhou Zhang, Tingting Yin, Zhen Wang, Qi Dong, Li He, Shuangyang Zheng
Summary: A high-hardness and wear-resistant ceramic coating was prepared on the surface of 319S aluminum alloy using the micro-arc oxidation (MAO) technique. The effects of pulse width, negative voltage, and KOH concentration on the MAO coating were investigated. The coating exhibited improved hardness, wear resistance, and reduced surface cracks, demonstrating its potential for enhancing the performance of aluminum alloys in various applications.
Article
Materials Science, Multidisciplinary
Yong Zhang, Wei Yang, Sen Yu, Liqun Wang, Xiqun Ma, Wei Gao, Nan Lan, Wenting Shao, Jian Chen
Summary: The addition of CuSO4 to (NaPO3)(6) base solution successfully prepared copper-containing micro-arc oxidation coatings on TC4 titanium alloys. The results showed that the addition of copper resulted in an increase in coating thickness and roughness, as well as a decrease in the coefficient of friction. The antibacterial properties of the coatings were improved with the addition of CuSO4 at certain concentrations. However, the corrosion resistance of the copper-doped coatings did not exceed that of the undoped coatings.
Article
Chemistry, Physical
Ke Xi, Hao Wu, Chilou Zhou, Ziyang Qi, Kailong Yang, Ricky K. Y. Fu, Shu Xiao, Guosong Wu, Kejian Ding, Guohua Chen, Paul K. Chu
Summary: This study investigates the corrosion and wear resistance of micro-arc oxidation (MAO) coatings containing quasi-2D sericite microplates on 2024 aluminum alloy. The results show that the incorporation of sericite improves the corrosion resistance, with the best performance observed in the M-15 sample. The wear resistance of the MAO coating is also enhanced by the addition of sericite microplates.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Zi-Yi Zhang, Tian-Yu Huang, Da-Jun Zhai, Hai-Bo Wang, Ke-Qin Feng, Lin Xiang
Summary: Coatings with different content of Zn element were successfully formed on Ti6Al4V substrates by micro-arc oxidation (MAO) to enhance the bioactivity and antibacterial activity of titanium alloys. The microstructure and composition of the coatings were characterized, and their bioactive and antibacterial activities were evaluated. The results showed that increasing Zn2+ concentration in the electrolyte resulted in changes in the properties and composition of the coatings, including thickness, surface roughness, porosity, and crystalline phases. The Zn-doped coatings improved cell viability and exhibited antibacterial activity.
SURFACE & COATINGS TECHNOLOGY
(2023)
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, Physical
Yuqing Wen, Mingming Ma, Amin Rabiei Baboukani, Jie Yang, Digby D. Macdonald, Wei Shang, Chunlei Wang
Summary: A composite film consisting of micro-arc oxidation, bis-[3-triethoxysilopropyl] tetrasulfide, and reduced graphene oxide was successfully prepared on an AA6061 surface using a combination of micro-arc oxidation and self-assembly. The dense composite film effectively prevented corrosive media from contacting the aluminum alloy, thereby protecting the substrate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Coatings & Films
Qiufeng Mo, Gemei Qin, Wu Wei, Ziying Zhang, Weizhou Li
Summary: This study improved the long-term corrosion resistance of the micro-arc oxidation (MAO) coating on Al alloys by sealing and hydrophobic modification. By assembling layers and introducing SiO2 particles and TMS, a superhydrophobic MAO-SiO2-TMS coating was obtained, which significantly enhanced the corrosion protection in a corrosive environment.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Guiquan Chai, Hailin Lu, Bowen Xue, Endong Jia, Huiyun Yang, Changkai Wang
Summary: In this study, micro-arc oxidation (MAO) technology was used to coat the surface of pure aluminum disks, and then liquid crystal polymer (LCP) was utilized in the mesh method to form a micro-bump structure on the MAO coating. The micro-bump composite coating showed lower friction coefficient, higher corrosion resistance, and excellent resistance to frictional corrosion compared to the single MAO coating. The microstructure and composition of both coatings were analyzed using various characterization techniques, and the protection mechanism and physical model of the LCP micro-bump coating were proposed and discussed. In summary, the preparation of micro-bump structures on MAO surfaces using the mesh method provides a feasible improvement idea for the shortcomings of MAO technology.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Naiyu Liu, Jianguo Gao, Shu Tong, Luyao Xu, Yong Wan, Huilai Sun
Summary: This study aims to prepare a composite oxide ceramic coating on aluminum alloy surface by combining micro-arc oxidation (MAO) and magnetron sputtering technology. The composite oxide coating showed better corrosion resistance compared to the reference coating.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
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
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)