Journal of Magnesium and Alloys最新文献

{"title":"Effect of cooling rate on corrosion resistance and behavior of micro-alloyed cast AZ91-Ca-Y alloy","authors":"Hongxiu Liu ,&nbsp;Jun-Ho Bae ,&nbsp;Jae-Wook Kang ,&nbsp;Jun-Seob Lee ,&nbsp;Jae-Yeon Kim ,&nbsp;Bong-Sun You","doi":"10.1016/j.jma.2025.02.026","DOIUrl":"10.1016/j.jma.2025.02.026","url":null,"abstract":"<div><div>Micro-alloying is an effective approach for improving the corrosion resistance of cast AZ91. However, the effect of micro-alloyed elements on corrosion resistance can be varied depending on the solidification rate influencing the diffusion and precipitation behavior of micro-alloying elements. This study investigated the effects of the cooling rate on the microstructure and corrosion behavior of micro-Ca and -Y alloyed cast AZ91 alloy (i.e., AZXW9100). To achieve various cooling rates, the alloys were prepared using three methods: steel mold casting (SMC), copper step mold casting (CSMC), and high-pressure die casting (HPDC). The corrosion behavior was analyzed through weight loss measurements, electrochemical impedance spectroscopy, and corrosion morphology observations. The results showed that the key microstructural factors influencing corrosion resistance differed between short- and long-term corrosion. As the cooling rate increased, the short-term corrosion rate was lowered from 0.91 mm/y (SMC) to 0.38 mm/y (HPDC), which was attributed to the decrease in the total area fractions of the eutectic α and β phases acting as galvanic corrosion sources. The long-term corrosion rate was reduced from 17.20 mm/y (SMC) to 0.71 mm/y (HPDC), which was revealed to be due to the enhanced connectivity of the β phase acting as corrosion barriers. Meanwhile, the increase in the cooling rate led to a modification of the Zn molar ratio in the β phase, reducing the Volta potential of the β phase from 101.8 mV to 66.9 mV. This reduction in the Volta potential of the main galvanic source also contributed to improved corrosion resistance. The HPDC AZXW9100 alloy produced in this study exhibited the lowest corrosion rate compared to other alloys. These findings suggest that controlling the cooling rate is a promising strategy for enhancing the corrosion resistance of AZXW9100 alloys.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 2202-2221"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous achievement of high strength and large elongation in extruded Mg/LPSO alloys via the anisotropic mechanical property-induced ductilization (AMID) mechanism","authors":"Koji Hagihara ,&nbsp;Tsuyoshi Mayama ,&nbsp;Michiaki Yamasaki ,&nbsp;Toko Tokunaga ,&nbsp;Mika Sugita ,&nbsp;Soya Nishimoto ,&nbsp;Kazuki Yamamoto ,&nbsp;Kanato Umemura","doi":"10.1016/j.jma.2025.03.003","DOIUrl":"10.1016/j.jma.2025.03.003","url":null,"abstract":"<div><div>We discovered two distinctive features in the mechanical properties of extruded Mg alloys containing a long-period stacking ordered (LPSO) phase, which are highly desirable for a new class of high-strength, lightweight materials. First, the Mg/LPSO-extruded alloy shows greater elongation compared to other Mg solid-solution-extruded alloys when a certain high strength is required. Second, the simultaneous achievement of high strength and large elongation in the Mg/LPSO-extruded alloy enhances with a reduction in extrusion speed. In this study, the physical origins of these features were examined, focusing on how changes in the microstructure affect the mechanical properties of the extruded alloys. Our findings clarify that the LPSO phase contributes not only to increased strength but also to enhanced elongation through an increase in the work-hardening rate, a mechanism we termed “anisotropic mechanical property-induced ductilization” (AMID). Until now, most efforts to improve the ductility of Mg materials have focused on achieving “isotropic mechanical properties” via grain refinement. Based on our results, we propose an entirely opposite approach: increasing the elongation of Mg alloy by locally enhancing their “anisotropic mechanical properties” through the AMID mechanism. Computational analysis further suggests that reducing the diameter of Mg-worked grains should effectively improving elongation in Mg/LPSO alloys with a high volume fraction of Mg-worked grains.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 2049-2071"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical and chemical interfacial engineering of Mg anodes for rechargeable magnesium batteries","authors":"Hyungjin Lee ,&nbsp;Jangwook Pyun ,&nbsp;Inkyoung Han ,&nbsp;Haewon Kim ,&nbsp;Seunghyeop Baek ,&nbsp;Yeonu Lee ,&nbsp;Jihun Roh ,&nbsp;Doron Aurbach ,&nbsp;Seung-Tae Hong ,&nbsp;Munseok S. Chae","doi":"10.1016/j.jma.2025.03.025","DOIUrl":"10.1016/j.jma.2025.03.025","url":null,"abstract":"<div><div>Rechargeable magnesium batteries are promising alternatives to traditional lithium batteries because of the high abundance of Mg compounds in earth crust, their low toxicity, and possible favorable properties as electrodes’ material. However, Mg metal anodes face several challenges, notably the natively existence of an inactive oxide layer on their surfaces, which reduces their effectiveness. Additionally, interactions of Mg electrodes with electrolyte solutions’ components can lead to the formation of insulating surface layers, that can fully block them for ions transport. This review addresses these issues by focusing on surface treatments strategies to enhance electrochemical performance of Mg anodes. It highlights chemical and physical modification techniques to prevent oxidation and inactive-layers formation, as well as their practical implications for MIBs. We also examined the impact of Mg anodes’ surface engineering on their electrochemical reversibility and cycling efficiency. Finally, future research directions to improve the performance and commercial viability of magnesium anodes and advance development of high-capacity, safe, and cost-effective energy storage systems based on magnesium electrochemistry are discussed.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 1859-1878"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-principles calculations to investigate the structural, elastic and thermodynamic properties of full-Heusler MgXY2 (X = Zn, Cd, Y = Ag, Au, Cu) compounds","authors":"Tahsin Özer ,&nbsp;Murat Çanlı ,&nbsp;Nihat Arıkan ,&nbsp;Ali İhsan Öztürk","doi":"10.1016/j.jma.2025.03.012","DOIUrl":"10.1016/j.jma.2025.03.012","url":null,"abstract":"<div><div>Magnesium and its compounds are recognized as favorable materials for structural uses, primarily due to their lightweight nature and remarkable specific strength. This research employed first-principles methodologies to investigate how pressure affects the crystal structure along with the elastic and thermodynamic characteristics of MgXY₂ (<em>X</em>=Zn, Cd, and <em>Y</em>= Ag, Au, Cu) compounds. All analyses were implemented via the Perdew-Burke-Ernzerhof variant of the Generalized Gradient Approximation alongside a plane-wave ultrasoft pseudopotential approach. The findings on the elastic constants indicated that these MgXY₂ compounds have maintained their stability at pressures up to 500 kBar. These constants informed detailed assessments of properties like elastic modulus, Poisson's ratio, Vickers hardness, and material anisotropy. The Quantum Espresso software was utilized to calculate melting points, Debye temperature, and minimum thermal conductivity values. A temperature range spanning from 0 to 800 K allowed for an evaluation of vibrational energy, free energy, entropy, and specific heat capacity metrics. The anticipated physical attributes suggest significant potential for these magnesium compounds in biomedical fields.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 2295-2306"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure and mechanical properties of ZK61 magnesium alloy thin-walled cylindrical component processed by two-step forging","authors":"Fang Chai ,&nbsp;Jianqiang Feng ,&nbsp;Xinghui Han ,&nbsp;Wuhao Zhuang ,&nbsp;Yizhe Chen ,&nbsp;Zhili Hu ,&nbsp;Xuan Hu ,&nbsp;Fangyan Zheng ,&nbsp;Lin Hua","doi":"10.1016/j.jma.2025.02.033","DOIUrl":"10.1016/j.jma.2025.02.033","url":null,"abstract":"<div><div>Magnesium alloy thin-walled cylindrical components with the advantages of high specific stiffness and strength present broad prospect for the lightweight of aerospace components. However, poor formability resulting from the hexagonal close-packed crystal structure in magnesium alloy puts forwards a great challenge for thin-walled cylindrical components fabrication, especially for extreme structure with the thickness-changing web and the high thin-wall. In this research, an ZK61 magnesium alloy thin-walled cylindrical component was successfully fabricated by two-step forging, i.e., the pre-forging and final-forging is mainly used for wed and thin-wall formation, respectively. Microstructure and mechanical properties at the core, middle and margin of the web and the thin-wall of the pre-forged and final-forged components are studied in detail. Due to the large strain-effectiveness and metal flow along the radial direction (RD), the grains of the web are all elongated along RD for the pre-forged component, where an increasingly elongated trend is found from the core to the margin of the wed. A relatively low recrystallized degree occurs during pre-forging, and the web at different positions are all with prismatic and pyramid textures. During final-forging, the microstructures of the web and the thin-wall are almost equiaxed due to the remarkable occurrence of dynamic recrystallization. Similarity, except for few basal texture of the thin-wall, only prismatic and pyramid textures are found for the final-forged component. Compared with the initial billet, an obviously improved mechanical isotropy is achieved during pre-forging, which is well-maintained during final-forging.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 2416-2432"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the microstructural, mechanical, damping, wear properties of magnesium alloy AZ91-3 vol. % SiCP-3 vol. % fly ash hybrid composite and property correlation thereof","authors":"Prince Gollapalli ,&nbsp;Mridul Pant ,&nbsp;A.R. Anil Chandra ,&nbsp;M.K. Surappa","doi":"10.1016/j.jma.2025.03.016","DOIUrl":"10.1016/j.jma.2025.03.016","url":null,"abstract":"<div><div>A combination of hard (SiC_P) and soft (fly ash) particulate reinforcements could be a strategy to enhance combination of multiple properties of Magnesium and its alloys which otherwise suffer from low stiffness, low wear resistance, and many other critical properties. However, at present a comprehensive and robust map correlating different properties in particle-reinforced composites is much lacking. In this work, an industrial grade AZ91 magnesium alloy reinforced with hard SiC and soft fly ash particles (with 3 vol. % each), has been prepared using stir casting followed by hot extrusion at 325 <span><math><msup><mrow></mrow><mo>∘</mo></msup></math></span>C with a ratio of 21.5. Microstructure of the hybrid composite was characterized using optical and scanning electron microscopes. The composite exhibited a reduction in average grain size from 13.6 to 7.1 µm, concomitantly an increase in Vickers hardness from 73 to 111 HV. The tension-compression yield asymmetry ratios of the unreinforced alloy and hybrid composite were 1.165 and 0.976, respectively indicating higher yield strength for the composite under compressive load. The composite exhibited 76% improvement in damping capacity under time sweep mode, and 28% improvement at 423 K under temperature sweep mode. The tribological characteristics of the composite under dry sliding conditions at sliding speeds and loads in the range of 0.5 to 1.5 m s^-1 and 10 to 30 N, respectively showed higher wear resistance than the unreinforced alloy. The composite showed 23% improvement in sliding wear resistance at a load of 20 N and a speed of 1 m s^-1. Finally, efforts have been made to understand the influence of one property on the other by developing statistical property correlation maps from the properties obtained in this study and from the literature. These maps are expected to help in the design of hybrid Metal Matrix Composites for a variety of targeted applications in different sectors.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 2374-2389"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation mechanism of W phase and its effects on the mechanical properties of Mg−Dy−Zn alloys","authors":"J.S. Chen ,&nbsp;C.J. Ji ,&nbsp;Q.Y. Huang ,&nbsp;Y.Z. Zeng ,&nbsp;H.B. Xie ,&nbsp;P. Chen ,&nbsp;B.Z. Sun","doi":"10.1016/j.jma.2024.05.009","DOIUrl":"10.1016/j.jma.2024.05.009","url":null,"abstract":"<div><div>The morphology and dimension of W phases play an important role in determining mechanical properties of Mg−RE−Zn (where RE denotes rare earth elements) alloys. In this study, the γ′ platelet and W particle occurred in the aged Mg−2Dy–0.5Zn (at.%) alloys were investigated by aberration-corrected scanning transmission electron microscopy. A novel formation mechanism of W phase was proposed, and its effects on the morphology and dimension of W particle, as well as mechanical properties of Mg−2Dy–0.5Zn alloys, were also discussed particularly. Different from other Mg−RE−Zn alloys, the nucleation and growth of W particle in Mg−Dy–Zn alloys mainly depend on the precipitated γ′ platelet. Primarily, a mass of Dy and Zn solute atoms concentrated near γ′ platelet or between two adjacent γ′ platelets can meet the composition requirement of W particle nucleation. Next, the smaller interfacial mismatch between W and γ′ facilitates the nucleation and growth of W particle. Thirdly, the growth of W particle can be achieved by consuming the surrounding γ′ platelets. The nucleation and growth mechanisms make W particles exhibit rectangular or leaf-like and remain at the nanoscale. The coexistence of γ′ platelets and nanoscale W particles, and some better interfacial relationships between phases, lead to a high strength-ductility synergy of alloy. The findings may provide some fundamental guidelines for the microstructure design and optimization of new-type Mg-based alloys.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 2174-2189"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141280180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrosion resistance of a calcium carbonate coating prepared by ultrasound-assisted chemical conversion in calcium disodium edetate solution","authors":"Ye Wang ,&nbsp;Zhipeng You ,&nbsp;Sanlve Pei ,&nbsp;Kai Ma ,&nbsp;Chaoneng Dai ,&nbsp;Danqian Wang ,&nbsp;Jingfeng Wang ,&nbsp;Fusheng Pan","doi":"10.1016/j.jma.2022.11.022","DOIUrl":"10.1016/j.jma.2022.11.022","url":null,"abstract":"<div><div>A CaCO₃ coating with good anticorrosion and adhesion performance was fabricated via ultrasound-assisted chemical conversion on AZ41 magnesium alloy, with a water-bath treated coating as a control. The coating formed on AZ41 mainly consists of an outer CaCO₃ layer and an inner (Ca, Mg)CO₃ layer. Surface characterizations were carried out to obtain the morphology and the chemical composition, mechanical tests were also adopted to assess the hardness and the adhesion of the coating prepared. Afterwards, the long-term corrosion resistance was investigated via electrochemical methods in the chloride-containing Portland cement system. Results show that the ultrasound-assisted coating exhibits higher mechanical properties. In addition, the corrosion resistance of the ultrasound-assisted coating is also higher than that of the bare AZ41 alloy and the water-bath treated coating. This could be due to the formation of a much more compact CaCO₃ coating on AZ41 Mg alloy, which is mainly benefit from the assistance of the ultrasound. Ultrasound accelerates the nucleation of CaCO₃ crystals and assists the removal of hydrogen bubbles. Additionally, corrosion mechanism was suggested and discussed for the CaCO₃ coating.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 5","pages":"Pages 1994-2008"},"PeriodicalIF":15.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45843068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clarifying interfacial microstructures of Ti particle reinforced Mg-Zn-Mn composites to achieve good strength-ductility synergy","authors":"Jichuan Fan, Hong Yang, Wenlong Xie, Gong Chen, Yunxuan Zhou, Kaihong Zheng, Jun Xu, Jun Tan, Xianhua Chen, Fusheng Pan","doi":"10.1016/j.jma.2025.03.030","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.030","url":null,"abstract":"In the field of particle reinforced magnesium (Mg) matrix composites (MMCs), the interfacial microstructures between reinforcements and Mg matrix are a subject of interest for most researchers. In this work, the 2 wt.% Ti particle reinforced Mg-6 Zn alloy composites with different contents (0, 0.5, 1, 1.5, 2 wt.%) of Mn were prepared using semi-solid stirring assisted ultrasonic treatment followed by hot extrusion. With the increment of Mn element, the characteristics of mixed-grain structure became obvious and the DRX was inhibited. Meanwhile, the interfacial product gradually changed from MgZn₂ to Mn₂Ti. The tensile test demonstrated that the 2Ti/Mg-6Zn-1.5Mn composite exhibited an excellent strength-ductility synergy, achieving the highest yield stress (YS), ultimate tensile stress (UTS) of 239 MPa, 366 MPa, respectively, along with a notable elongation (El.) of 20.6%. The increased strength is mainly due to the grain refinement, the precipitation strengthening, the HDI strengthening and the strong interfacial bonding including the tightly Ti/Mn₂Ti bonding and the Mn₂Ti/Mg coherent orientation relationship. The ideal El. is the result of fine/coarse bimodal structure and the proper interfacial reaction, which can reduce the occurrence of cracks.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"60 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of 8HQ@ZIF-8/PDA smart nanocontainers via host-guest nanoconfinement and surface self-assembly for enhanced corrosion protection and self-healing of magnesium alloy epoxy composite coatings","authors":"Xiaomeng Yu, Yuejun Ouyang, Jilan Long, Dan Xu, Guangming Liang, Zhiyuan Feng, Dongmei Pu, Qiwen Yong, Zhi-Hui Xie","doi":"10.1016/j.jma.2025.04.006","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.006","url":null,"abstract":"Conventional nanoparticles incorporated into epoxy coatings suffer from poor compatibility and insufficient corrosion improvement, hindering their practical applications. A dual-strategy approach integrating in-situ host–guest nanoconfinement and surface self-assembly was devised to fabricate 8HQ@ZIF-8/PDA smart nanocontainers. The guest 8-hydroxyquinoline (8HQ) was encapsulated within the zeolitic imidazolate framework-8 (ZIF-8) host, leveraging nanoconfinement effects. A bioinspired polydopamine (PDA) layer was then self-assembled on the 8HQ@ZIF-8 surface through dopamine oxidative self-polymerization, resulting in a robust nanocontainer architecture. Density functional theory (DFT) calculations verify that the molecular interactions between the PDA and the ZIF-8 surface was the chemical adsorption. The resultant 8HQ@ZIF-8/PDA retained the rhombic dodecahedral morphology and crystallinity of ZIF-8, demonstrating controlled pH-responsive release behavior. When incorporated into an epoxy (EP) resin matrix on magnesium alloy, the 8HQ@ZIF-8/PDA/EP smart composite coatings exhibited outstanding interfacial compatibility and long-term stability, achieving a low-frequency impedance (|<em>Z</em>|₀.₀₁_Hz) of 2.49 × 10⁷ Ω cm², a maximum phase angle of 82.8°, and a breakpoint frequency (<em>f</em>_b) of 63.34 Hz after 50 days of immersion in a 3.5 wt% NaCl solution. These findings highlight the exceptional self-healing and corrosion-resistant properties of the 8HQ@ZIF-8/PDA/EP smart composite coatings, underscoring its potential for protecting magnesium alloys in aggressive environments.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"7 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}