Article
Chemistry, Applied
Beibei Chen, Zhe Dong, Jiaye Li, Mengjie Zhang, Kan Zhang
Summary: Adding an innovative ZnO nanowires-decorated h-BN hybrid onto epoxy significantly enhances the tribological properties, reducing the friction coefficient and wear rate by 81.5% and 95.4% respectively. The composite coating shows superior tribological properties under harsh conditions, mainly due to the synergistic effect between ZnO nanowires and h-BN, as well as the good interfacial compatibility with EP.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Metallurgy & Metallurgical Engineering
Rabia Kara, Huseyin Zengin
Summary: This study investigated the microstructure, tribological and electrochemical corrosion properties of plasma electrolytic oxidation (PEO) coatings with various amounts of carbon nanotube (CNT) additives on AZ80 magnesium alloy substrate in silicate-based electrolyte. The results showed that increasing CNT additions led to thicker coating layers. The addition of 0.5 g/L CNT resulted in a slight decrease in roughness before increasing again. The wear resistance of the PEO-coated specimens improved with increasing CNT-incorporation. The best corrosion resistance was achieved with the addition of 0.5 g/L CNT.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Chemistry, Physical
Rasoul Parichehr, Changiz Dehghanian, Aida Nikbakht
Summary: The composite Plasma Electrolytic Oxidation together with silane (PEO/silane) coating on AZ31 magnesium alloy improved the adhesion strength of the epoxy coating and showed superior corrosion resistance compared to PEO and silane single-layer coatings. Importantly, the PEO/silane coating maintained excellent corrosion resistance even after 168 hours of immersion in NaCl solution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Coatings & Films
Xiaolin Zhang, Linlin Wang, Jie Sheng, Weiping Dong, Lu Dong, Dongyun Wang, Xiaoming Wang
Summary: Plasma electrolytic oxidation (PEO) coatings were produced on Ti-48Al-2Cr-2Nb alloy in a silicate electrolyte. Four coating growth stages were revealed, including anodic oxidation, breakdown of the anodized film, micro-arcing growth, and formation of glass phase with coating fusing. The PEO coatings with predominant Al2TiO5 and aluminium silicate phases showed good thermal shock resistance and wear resistance after thermal shock cycles.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Energy & Fuels
K. Thavasilingam, A. Senthil Kumar, M. Adam Khan, S. Devanand, K. Giridharan
Summary: The addition of rice bran wax and fumed silica particles in the composite material showed improved mechanical properties, hydrophobic nature, thermal stability, and wear resistance, making it suitable for various applications.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Review
Metallurgy & Metallurgical Engineering
Arash Fattah-alhosseini, Razieh Chaharmahali, Kazem Babaei
Summary: Magnesium and its alloys have unique properties but suffer from high corrosion rates. Plasma electrolytic oxidation (PEO) is used to form oxide films on the surface, but long-term protection is limited. PEO-based composite coatings are applied to provide corrosion protection on magnesium alloys. The PEO/polymer dual coating system effectively improves corrosion and abrasion resistance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Review
Polymer Science
M. M. A. Baig, M. Abdul Samad
Summary: Epoxy composite coating systems are commonly used in applications to protect components from corrosive media, but their use in demanding tribological applications is limited. Researchers have attempted to enhance the tribological properties of these coatings by utilizing different types of micro/nano-sized fillers.
Article
Engineering, Mechanical
Yu Huang, Meng Cai, Can He, Chengyi Si, Le Li, Xiaoqiang Fan, Minhao Zhu
Summary: Randomly distributed basalt fibers were used to enhance the tribological properties of epoxy coating. The composite coating with 2 wt% basalt fibers showed the best tribological properties, reducing the wear rate by 76.03% compared to pure epoxy. The reinforcing effects of interlocking internal structures and the slightly convex bearing structure of basalt fiber were verified through dynamic mechanical analysis and scanning electron microscope.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Chang Liu, Xiaopeng Lu, Yan Li, Qianqian Chen, Tao Zhang, Fuhui Wang
Summary: In this study, post-treatment process was utilized to enhance the corrosion and wear resistance of PEO coatings, with sol-gel and epoxy layers effectively sealing open pores to improve coating performance. The hybrid coatings with epoxy layer showed superior corrosion and wear resistance, especially with longer dipping time during post-treatment generating denser coatings with superior properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Arezoo Ghanbari, Aydin Bordbar-Khiabani, Fernando Warchomicka, Christof Sommitsch, Benyamin Yarmand, Ali Zamanian
Summary: There is a growing trend to replace permanent implants with biodegradable magnesium implants in temporary bone applications. This is due to the similar mechanical properties and biocompatibility of magnesium to bone. However, the rapid degradation rate of magnesium can lead to implant loosening. This study aims to develop a multifunctional multilayer coating to control the degradation behavior.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Anurag Namdev, Amit Telang, Rajesh Purohit
Summary: In this research, carbon fiber and Graphene nanoplatelets (GNP) reinforced hybrid composites with different weight percentages of GNP were fabricated and wear analysis was conducted to understand the relationship between control parameters and weight loss. The experimental results showed that adding GNP can improve the mechanical properties and reduce wear of the composites.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Dan Zhang, Qi Han, Kun Yu, Xiaopeng Lu, Ying Liu, Ze Lu, Qiang Wang
Summary: The addition of proper amount of CuO into PEO coatings on pure magnesium greatly improved the antibacterial abilities of the coatings, while also promoting cell proliferation. Among the copper-bearing PEO coatings tested, PEO-5Cu showed the best combination of antibacterial ability, biocompatibility, and corrosion resistance, making it a recommended option for patients with jaw defects.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xiujie Chen, Xincheng Xie, Yupeng Zhang, Haiyan Wang, Zhongwei Liang
Summary: To improve the wear properties of magnesium alloys, a novel technique using ultrasonic shot peening was developed to prepare tungsten carbide (WC) coatings. The study investigated the surface morphology, microstructure characteristics, and wear properties of the coatings. The findings showed that the WC coating had a thickness of 20 mm, a surface hardness of 3.24 GPa, and exhibited excellent wear resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Mengyu Lin, Aneta Nemcova, Andrey A. Voevodin, Andras Korenyi-Both, Tomasz W. Liskiewicz, Nicolas Laugel, Allan Matthews, Aleksey Yerokhin
Summary: The duplex coatings on AA6082 alloy exhibited significant improvement in fretting wear resistance and friction reduction compared to single-layer coatings. By reducing contact pressure, the topcoat's lubricating behavior was retained, resulting in high wear resistance and elimination of fatigue damage after 10^4 cycles.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Coatings & Films
L. Pezzato, L. Lorenzetti, L. Tonelli, G. Bragaggia, M. Dabala, C. Martini, K. Brunelli
Summary: This study characterized PEO coatings containing SiC and borosilicate glass particles, finding that glass particles enhanced corrosion resistance while SiC particles improved wear resistance. The best combination of properties was obtained with the addition of glass particles for 3 min treatment time, increasing both corrosion and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Yan Li, Xiaopeng Lu, Maria Serdechnova, Carsten Blawert, Mikhail L. Zheludkevich, Kun Qian, Tao Zhang, Fuhui Wang
Summary: This study achieved in-situ incorporation of layered double hydroxides (LDH) nanocontainers into plasma electrolytic oxidation (PEO) coatings on AZ91 Mg alloy. Fumarate was selected as the Mg corrosion inhibitor for exchange and intercalation into the nanocontainers, which were then incorporated into the coating. It was found that the presence of LDH nanocontainers increased the thickness and compactness of the coatings. The corrosion resistance of the coatings was greatly enhanced and stabilized by the loaded inhibitor and nanocontainers through ion-exchange when corrosion occurred.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
Jianwei LI, Youmin Qiu, Junjie Yang, Yinying Sheng, Yanliang Yi, Xun Zeng, Lianxi Chen, Fengliang Yin, Jiangzhou Su, Tiejun Zhang, Xin Tong, Bin Guo
Summary: Wire and arc additive manufacturing (WAAM) was used to produce AZ31 magnesium alloy with significant grain refinement and non-textured crystallographic orientation, similar phase composition, and stable corrosion performance compared to cast AZ31. The different corrosion behaviors were mainly attributed to the grain size, with cast AZ31 exhibiting micro galvanic corrosion and WAAM AZ31 exhibiting intergranular corrosion.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Environmental
Linqian Wang, Darya Snihirova, Min Deng, Bahram Vaghefinazari, Daniel Hoeche, Sviatlana V. Lamaka, Mikhail L. Zheludkevich
Summary: The study found that 2,6-DHB can simultaneously enhance the discharge activity of Mg-0.15Ca anodes and inhibit self-discharge, resulting in negative average potential and high anodic utilization efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Vinodh K. Korrapati, Nico Scharnagl, Dietmar Letzig, Mikhail L. Zheludkevich
Summary: The study achieved reliable protection on magnesium alloy sheet materials by applying phosphate and silane pre-treatments, followed by alkyd-based coatings. The use of SA pre-treatments at the metal-polymer interface influences the adhesive properties between the solid metal substrate and the alkyd-based coating. Bilayer coatings with organophosphate and organosilane demonstrate protective properties and enhance the peeling of alkyd coat, providing efficient alloy protection.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Metallurgy & Metallurgical Engineering
Gen Zhang, Liang Wu, Maria Serdechnova, Aitao Tang, Cheng Wang, Carsten Blawert, Fusheng Pan, Mikhail L. Zheludkevich
Summary: In this study, plasma electrolytic oxidation (PEO) coatings on magnesium alloy were produced and followed by hydrothermal treatments to synthesize layered double hydroxides (LDHs) based nanocontainers. The synthesis of LDHs was performed in different growth solutions. The results showed that it was difficult to form LDHs on silicate-based PEO coating, while hydrothermal treatments in Al3+ containing solution played an important role in corrosion resistance for phosphate and silicate-based PEO coatings.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
Cheng Wang, Wen Xu, Daniel Hoeche, Mikhail L. Zheludkevich, Sviatlana V. Lamaka
Summary: This study elaborates on the contribution of ORR to the corrosion process of pure Mg at different impurity levels in NaCl electrolyte, using local techniques for experimental validation and computational simulations. The simultaneous monitoring of H2 and O2 local concentrations reveals the relationship between ORR and hydrogen evolution reaction.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Tatsiana Shulha, Maria Serdechnova, Sviatlana V. Lamaka, Xiaopeng Lu, Christian Feiler, Carsten Blawert, Mikhail L. Zheludkevich
Summary: This study describes the intercalation of corrosion inhibitors into layered double hydroxides on the surface of magnesium alloy. The corrosion protective properties of the obtained layers were studied and compared using various tests. The results showed that vanadate intercalated into LDH was more effective in protecting the magnesium alloy compared to oxalate.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Engineering, Environmental
Zhihao Chen, Nico Scharnagl, Mikhail L. Zheludkevich, Hanjie Ying, Wenzhong Yang
Summary: Metal corrosion causes significant damage to the economy, environment, and industry. Smart self-healing coatings have attracted attention for active corrosion protection. These coatings achieve self-healing through either intrinsic or extrinsic methods. Intrinsic self-healing coatings utilize reversible physical and chemical interactions between molecules, providing permanent self-healing effects. Extrinsic methods involve embedding micro/nanocontainers in the coatings, which can sense changes in the micro-environment and repair the coating's surface. This review summarizes the research progress of micro/nanocontainer-based stimuli-responsive self-healing coatings, exploring their different functions and applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Mechanical
Matteo Bernardi, Uceu F. H. Suhuddin, Banglong Fu, Juliano P. Gerber, Mateus Bianchi, Ilya Ostrovsky, Bjoern Sievers, Koen Faes, Emad Maawad, Luigi Lazzeri, Jorge F. dos Santos, Benjamin Klusemann
Summary: The mechanical behavior of multi-spot joints of AA 2024-T3 obtained by refill FSSW with the addition of sealant commonly used in aviation industry was investigated in this study. The study proves that producing lap-joints by refill FSSW with sealant considerably improves the fatigue performance.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Metallurgy & Metallurgical Engineering
Min Deng, Linqian Wang, Darya Snihirova, Jan Bohlen, Gerrit Kurz, Sviatlana V. Lamaka, Daniel Hoeche, Mikhail L. Zheludkevich
Summary: Thermomechanical processing can enhance the corrosion performance of lean Mg-Ca alloys, but annealing can accelerate the corrosion rate due to Fe precipitation. Micro-alloying with indium can effectively restrain the formation of Fe-containing precipitates. This finding provides a foundation for developing Mg-Ca-based alloys with high corrosion resistance, superior electrochemical performance, and excellent mechanical properties.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Biomedical
Lara Moreno, Cheng Wang, Sviatlana V. Lamaka, Mikhail L. Zheludkevich, Juan Rodriguez-Hernandez, Raul Arrabal, Endzhe Matykina
Summary: In this study, a hybrid hierarchical coating system consisting of plasma electrolytic oxidation (PEO) coating and a homogeneously porous structured polycaprolactone (PCL) top-coat layer loaded with ciprofloxacin (CIP) was developed on Mg3Zn0.4Ca alloy. The HHC system achieved controlled drug release, multi-level protection, and corrosion inhibition by sealing the PEO coating pores, inhibiting corrosive species, and forming insoluble CIP-Me (Mg/Ca) chelates. CIP actively participated in the protection mechanism by interacting with cations coming through the damaged coating.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Feng Jin, Junmiao Shi, Guodong Wen, Banglong Fu, Junjun Shen, Shiqing Wang, Yanbo Wu, Jiangtao Xiong, Jinglong Li
Summary: This study focused on the frictional heat induced morphological responses of austenitic alloys SUS304, A286, and Inconel 718 at the interface in rotary friction welding, including the initiation, evolution of corona-bond, and the formation of heat-pattern. Summative models were given to describe the location and width of corona-bond at initiation, the corona-bond evolution mode, and the formation of heat-patterns. The results showed that the morphology of the heat-pattern significantly influenced the performance and properties of the welded joint.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Industrial
Gaohui Li, Ting Chen, Banglong Fu, Junjun Shen, Luciano Bergmann, Li Zhou, Ke Chen, Jorge F. dos Santos, Benjamin Klusemann
Summary: By attaching the upper stationary shoulder to the plasticized metal zone, the bobbin tool's rotating parts are minimized, reducing handling forces and torque during the welding process, and increasing the maximum welding speed and quality.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Polymer Science
Bifeng Fan, Junjie Yang, Lin Cao, Xiao Wang, Jie Li, Yingfei Yang, Qiwei Wang, Peng Zhang, Florin Vogel, Wei Li, Zhidan Lin
Summary: Due to the low VOC emissions, water-borne epoxy resins (WBE) have gained popularity in recent years. However, the large surface tension of water can result in voids and cracks during the curing process of coatings. In this study, an electrochemical strategy was used to evaluate the effect of SiO2 content on the corrosion performance of WBE coatings. The results showed that properly modified SiO2 significantly improved corrosion resistance and adhesion between the coatings and metallic substrates.
Article
Chemistry, Multidisciplinary
Yanyu Chen, Jie Li, Yingfei Yang, Junjie Yang, Huaijun Lin, Qiwei Wang, Xusheng Yang, Yuying Meng, Wei Li, Zhidan Lin, Peng Zhang
Summary: A novel porous polymer was prepared using the Pickering high internal phase emulsion (HIPE) template method for efficient oil-water separation from sewage. The addition of OTS-modified carbon nanotubes and surfactants improved the stability, mechanical properties, and separation efficiency of the polyHIPE. The 1%OTS-CNT polyHIPE exhibited high oil absorption capacity and maintained absorption efficiency even after multiple reapplications. Furthermore, the polymer showed superior antibacterial properties against E. coli and S. aureus.
