Materials Chemistry and Physics最新文献

{"title":"Controllable synthesis of 3D porous MXene/polypyrrole/Fe3O4 with magnetically tunable pore structures for electromagnetic wave absorption","authors":"Wenjuan Zhang ,&nbsp;Hanhong Xu ,&nbsp;Yuheng Li ,&nbsp;Yaxian Wang ,&nbsp;Xiangyue Yang ,&nbsp;Youliang Wang ,&nbsp;Henan Jia ,&nbsp;Yongqian Shen ,&nbsp;Wei Zhang ,&nbsp;Tomasz Wejrzanowski","doi":"10.1016/j.matchemphys.2025.130507","DOIUrl":"10.1016/j.matchemphys.2025.130507","url":null,"abstract":"<div><div>With the rapid advancement of digital and communication technologies, electromagnetic pollution poses an increasingly serious threat to the environment and precision instruments. In this study we report a three-dimensional MXene/PPy/Fe₃O₄(3D MPF) composite with an ordered three-dimensional network structure constructed by an in-situ self-assembly method. The porous structure of 3D MPF was adjusted to induce the assembly of MXene nanosheets through different EDA additions. The 3D MPF exhibits cross-linked and interpenetrating conductive networks that facilitate efficient electron transfer and reflection. The multi-layer heterogeneous interfaces and functional groups of the 3D MPF generate more polarization defects, causing significant reflection and scattering of incident electromagnetic waves. Moreover, the inclusion of Fe₃O₄ supports magnetic loss and optimizes the impedance matching of the 3D MPF. The 3D MPF exhibits a maximum reflection loss of −55.21 dB at a thickness of 3.31 mm when the ratio of MXene to Fe₃O₄ is 1:1. At a thickness of 1.41 mm, the effective absorption bandwidth reaches 3.44 GHz (from 13.84 GHz to 17.28 GHz). By adjusting the matching thickness, the effective absorption bandwidth of the 3D MPF ranges from 3.44 GHz to 18 GHz, with reflection losses below −10 dB, indicating its significant potential in electromagnetic wave absorption.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130507"},"PeriodicalIF":4.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel red-emitting CDs@LaCaAl3O7:Eu3+ nanocomposites: A sustainable breakthrough for optical thermometry, indoor plant growth and intelligent security labels","authors":"S. Priyanka Chakradhar ,&nbsp;B.R. Radha Krushna ,&nbsp;S.C. Sharma ,&nbsp;Subrat Tripathi ,&nbsp;C. Indhu ,&nbsp;I. Jaiganesh ,&nbsp;K. Manjunatha ,&nbsp;Sheng Yun Wu ,&nbsp;B.K. Das ,&nbsp;H. Nagabhushana","doi":"10.1016/j.matchemphys.2025.130540","DOIUrl":"10.1016/j.matchemphys.2025.130540","url":null,"abstract":"<div><div>A series of melilite LaCaAl₃O₇:xEu³⁺ (x = 1–11 mol%) nanoparticles (LCAO:xEu³⁺ NPs) are synthesized using a solution combustion method with spinach extract as a bio-fuel. When carbon dots (CDs) derived from papaya seeds via microwave-assisted synthesis are introduced into LCAO:7Eu³⁺ NPs, the resulting bright red-emitting CDs(y)@LCAO:7Eu³⁺ (y = 2, 4, 6, 8 wt%) nanocomposites (NCs) exhibited a wide excitation band peaking at approximately 395 nm, aligning well with the emission range (550–750 nm) of near-ultraviolet (n-UV) LED chips. Remarkably, the CDs (4 wt%)@LCAO:7Eu³⁺ NCs demonstrated a 20-fold increase in PL intensity compared to LCAO:7Eu³⁺ alone, attributed to Förster Resonance Energy Transfer (FRET) between CDs and Eu³⁺ ions. This enhancement likely arises from the CDs capturing electrons and transferring energy to Eu³⁺ ions, offering a simple and eco-friendly strategy to improve luminescent properties. Furthermore, the material retained 91.5 % of its luminescence intensity at 420 K, with an activation energy of 0.39 eV, showcasing exceptional thermal stability. With an internal quantum efficiency (I_QE) of 89.58 % and impressive color purity (99.7 %), the composite achieved a relative sensitivity of 3.10 % K⁻¹ at 300 K, highlighting its suitability for non-contact optical thermometry. The material exhibited minimal chromaticity shifts even at high temperatures, ensuring excellent chromaticity stability. A white light-emitting diodes (w-LEDs) fabricated using commercial blue and green phosphors combined with CDs (4 wt%)@LCAO:7Eu³⁺ NCs on a 395 nm near ultra violet (n-UV) LED chip achieved a color rendering index (CRI) exceeding 90 under varying currents. Additionally, the NPs demonstrated remarkable potential for indoor agriculture, promoting chilli plant growth by increasing height, stem diameter, and leaf width by 6.17 %, 21.42 %, and 10.65 %, respectively, and boosting total chlorophyll content by 19.50 % compared to one grown under natural light. Furthermore, luminescence-based binary and quick response (QR) code encryption showcased its advanced applications in optical security. These findings emphasize the material's versatility for sustainable indoor plant cultivation and anticounterfeiting (AC) technologies.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130540"},"PeriodicalIF":4.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electro-photovoltaics of grignard metathesis-derived poly(propylene imine) tetra(salicylaldimine)-co-poly(3-hexylthiophene-2,5-diyl) copolymer","authors":"Morongwa E. Ramoroka ,&nbsp;Hayelom H. Tesfay ,&nbsp;Precious Ekwere ,&nbsp;Kefilwe V. Mokwebo ,&nbsp;Vivian S. John-Denk ,&nbsp;Kwena D. Modibane ,&nbsp;Samantha F. Douman ,&nbsp;Emmanuel I. Iwuoha","doi":"10.1016/j.matchemphys.2025.130549","DOIUrl":"10.1016/j.matchemphys.2025.130549","url":null,"abstract":"<div><div>End-functionalization of polymers and synthesis of copolymers has been reported to be an effective method in tuning intermolecular interactions and electronic energy levels, which is extremely vital for improving the power conversion efficiency (PCE) of organic photovoltaic cells (OPVs). In this work, in-situ synthesis of novel dendritic poly(propylene imine) tetra(salicylaldimine)-co-poly(3-hexylthiophene-2,5-diyl) (P3HT-PSL) copolymer by Grignard metathesis is reported. Prior to performing Grignard metathesis, the poly(propylene imine) tetra(salicylaldimine) (PPI-SL) dendritic core material was synthesized using Schiff base condensation. It is noteworthy that this Grignard metathesis has never been used to grow a linear polymer chain on the four branches of dendritic core material. The properties of synthesized PPI-SL and P3HT-PSL were studied by Fourier-transform infrared (FTIR), small angle X-rays scattering (SAXS), thermal gravimetric analysis (TGA), nuclear magnetic resonance (NMR), ultraviolet–visible spectroscopy (UV–Vis), electrochemical impedance spectroscopy (EIS), photoluminescence (PL), and cyclic voltammetry (CV). Effect of poly(3-hexylthiophene-2,5-diyl) (P3HT) chains on the PPI-SL branches were investigated. The formation of P3HT-PSL was confirmed by NMR, FTIR, TGA, and UV–Vis spectroscopy. Synthesized materials were used as donor materials for OPVs and champion PCE of 0.24 % was achieved for P3HT-PSL based OPV. This work uncovers a new avenue for synthesis of organic donor materials for use in OPVs.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130549"},"PeriodicalIF":4.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphology evolution of Fe-doped V2O5 flower-like microspheres for H2S adsorption","authors":"Diep Ngoc Le ,&nbsp;Thi Anh Le ,&nbsp;Thao Phuong Ho Le ,&nbsp;Chien Mau Dang ,&nbsp;Phuc Hoan Tu ,&nbsp;Yusuke Shiratori ,&nbsp;Tin Chanh Duc Doan","doi":"10.1016/j.matchemphys.2025.130541","DOIUrl":"10.1016/j.matchemphys.2025.130541","url":null,"abstract":"<div><div>Vanadium pentoxides (V₂O₅) are commonly employed as adsorbents for hydrogen sulfide (H₂S). Their adsorption capacity can be enhanced by doping with transition metal oxides and/or morphology modification. This paper aims to study the morphology evolution of Fe-doped V₂O₅ flower-like microspheres for H₂S adsorption. The morphology and structure of Fe-doped V₂O₅ were characterized using FE-SEM, XRD, XPS, Raman, FTIR and XRF mapping analyses. The H₂S adsorption capacity was evaluated by passing a mixture of H₂S and N₂ gas through a test tube containing the Fe-doped V₂O₅ material, and the H₂S concentration in the output was measured with a detector to determine the adsorption capacity of the sample. At optimal doping concentration of 0.2 mmol Fe, perfect Fe-doped V₂O₅ flower-like with an average diameter of 4.5 μm and BET of 7.2 m²/g was achieved, which yielded maximum H₂S adsorption capacity of 2.24 mg/g and removal efficiency of 87%. Fe dopant ions partially replaced vanadium sites within the V₂O₅ lattice, leading to the formation of additional oxygen vacancies and there by improving the overall surface reactivity, enhancing its H₂S adsorption capacity. However, excessive Fe doping resulted in the formation of hollow structure and secondary Fe₂V₄O₁₃ phases, which altered the chemical structure of V₂O₅, partially blocked active sites and diminished the adsorption capability of the material. These findings demonstrate the potential of Fe-doped V₂O₅ flower-like as an efficient and energy-saving material for H₂S removal at room temperature.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130541"},"PeriodicalIF":4.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic insights into high-performance and selective Cd(II) detection using Ag2WO4 nanoparticle-based electrochemical sensors for real-world applications","authors":"Fouzia Mashkoor ,&nbsp;Mohd Shoeb ,&nbsp;Shushuai Zhu ,&nbsp;Jahangeer Ahmed ,&nbsp;Changyoon Jeong","doi":"10.1016/j.matchemphys.2025.130519","DOIUrl":"10.1016/j.matchemphys.2025.130519","url":null,"abstract":"<div><div>The electrochemical detection of cadmium (Cd(II)) is essential for environmental monitoring due to its high toxicity and persistence in aquatic ecosystems. This study presents a silver tungstate nanoparticle (Ag₂WO₄ NPs)-modified glassy carbon electrode (GCE) as a sensitive and selective electrochemical sensor for Cd(II) detection. The strong interaction between Cd(II) ions and the active sites of Ag₂WO₄ NPs, combined with the material's redox-active properties, enhances electron transfer, resulting in improved conductivity and signal response. The sensor demonstrated excellent performance, with a broad linear detection range from 10 to 260 ppb and an impressive detection limit of 2.022 ppb, which is well below the permissible limits for drinking water set by regulatory agencies. The sensor's practical applicability was validated using real-world water samples, including tap water, groundwater and river water, with minimal interference from co-existing ions. The relative standard deviation (RSD) values ranged from 0.69 % to 6.59 %, confirming its reliability in complex environmental matrices. These results highlight the potential of Ag₂WO₄ NPs-based electrochemical sensors as cost-effective, reliable, and efficient tools for real-time monitoring of heavy metal contamination in diverse environmental conditions.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130519"},"PeriodicalIF":4.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing electrochemical performance of Ni-rich cathodes for Li-ion batteries through spatial atomic layer deposition of ZnO coatings","authors":"Vu Tue Anh ,&nbsp;Hung-Anh Tran Vu ,&nbsp;Viet Huong Nguyen ,&nbsp;Ho Xuan Nang ,&nbsp;Lien Thi Do ,&nbsp;Van-Duong Dao ,&nbsp;Ngoc Hung Vu","doi":"10.1016/j.matchemphys.2025.130544","DOIUrl":"10.1016/j.matchemphys.2025.130544","url":null,"abstract":"<div><div>This work employed spatial atomic layer deposition (SALD) technology to apply an amorphous ZnO coating directly onto the cathode with precise control over its thickness (15 nm) at the atomic level to improve electrochemical performance. The cathode treated with 200 ALD cycles demonstrates significantly enhanced high current rates (171 % higher than the bare sample at 2C) and cycle stability compared to the untreated material (150 % higher than the bare sample). This improvement is attributed to the superior quality of the ALD oxide coating, which shields the active material from HF attack, reduces metal ion dissolution within the electrode, and promotes Li-ion diffusion. This SALD process offers a promising avenue for the battery industry to produce innovative electrodes capable of maintaining high performance even under rigorous conditions of high-rate cycling.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130544"},"PeriodicalIF":4.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“Tenoxicam-loaded bioglass/polyvinyl alcohol composites for biomedical applications: In-vitro study”","authors":"M.S. El-khooly ,&nbsp;Ahmed A. Abdel-Aal ,&nbsp;Alsayed E. Mekky ,&nbsp;A.A. Al-esnawy ,&nbsp;A.S. Abdraboh","doi":"10.1016/j.matchemphys.2025.130526","DOIUrl":"10.1016/j.matchemphys.2025.130526","url":null,"abstract":"<div><div>Incorporating nonsteroidal anti-inflammatory drugs (NSAIDs) into a bio-composite made of bioglass ceramic and polymers may help reduce the side effects associated with long-term osteoarthritis treatment. This study aims to develop a novel bio-composite of bioglass ceramic (BGc) and polyvinyl alcohol (PVA) as a drug delivery system for tenoxicam (TNX). The BGc/PVA composite, with a molar ratio of 1:2 wt%, was infused with varying concentrations of tenoxicam (10, 20, and 30 wt%). The samples were characterized using several techniques, including (XRD), (FTIR), (SEM), and (EDXA). The bioactivity of the TNX-loaded BGc/PVA composites was evaluated by immersing them in simulated body fluid (SBF). UV-VIS spectroscopy was utilized to analyze the release profile of tenoxicam over 1, 2, 4, 8, 16, 24, and 32 days of immersion in SBF. The antibacterial activity of the TNX-loaded BGc/PVA composites was tested using the agar well diffusion method, with Escherichia coli and Klebsiella pneumoniae used as models for Gram-negative bacteria, and Staphylococcus aureus and Staphylococcus haemolyticus as models for Gram-positive bacteria. Bioactivity analysis indicated that an apatite layer formed on the surface of the TNX-loaded BGc/PVA composites, confirming that the biological activity of the composites is enhanced due to increased porosity from the addition of tenoxicam. The 30TNX/BGc/PVA composite showed a higher number of apatite particles (flake-like crystals) on its surface compared to other composites, suggesting a more extensive formation of the hydroxycarbonate apatite (HCA) layer. Antibacterial assay results confirmed that the localized release of TNX from the prepared composites makes BGc/PVA composites an effective drug delivery system that can be used successfully in the treatment of chronic bone infections.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130526"},"PeriodicalIF":4.3,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of Sn42Bi58 and Sn64.7Bi35Ag0.3 soldering pastes for Cu–Al direct soldering and study of their performance","authors":"Ruofan Wang,&nbsp;Yanfu Yan,&nbsp;Wenjun Li,&nbsp;Zhiming Li","doi":"10.1016/j.matchemphys.2025.130547","DOIUrl":"10.1016/j.matchemphys.2025.130547","url":null,"abstract":"<div><div>Cu–Al soft soldering plays a crucial role in the fabrication of Cu–Al composites. In this study, a new rosin-type flux for Cu–Al direct soldering was synthesized, and G-1 (Sn42Bi58 paste) and G-2 (Sn64.7Bi35Ag0.3 paste) soft soldering pastes were prepared. The results of flux physicochemical tests are as follows: density 1.11 g/cm³, pH 5.2, viscosity 32 Pa s, and non-corrosive to the copper plate. These are in line with the requirements for soldering applications. The wettability test results show that G-1 and G-2 displayed good wettability on the Cu and Al plates. This is in line with the standard Cu–Al soft soldering paste. The mechanical property test showed that G-2 had better mechanical properties than G-1, with a tensile strength of 112.57 MPa. SEM revealed that the IMC (intermetallic compound) layer of G-1 was flatter than that of G-2. This is closely related to the fact that the Ag in Sn64.7Bi35Ag0.3 powders can reduce the enrichment of metallic Bi and refine the grains.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130547"},"PeriodicalIF":4.3,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring the structural, optical, magnetic, and dielectric properties of yttrium-substituted magnesium ferrite via microwave hydrothermal synthesis","authors":"T. Suresh Kumar ,&nbsp;K. Kiran Kumar ,&nbsp;T. Ramesh ,&nbsp;I. Radhika ,&nbsp;K. Praveena ,&nbsp;S. Katlakunta","doi":"10.1016/j.matchemphys.2025.130528","DOIUrl":"10.1016/j.matchemphys.2025.130528","url":null,"abstract":"<div><div>The nanostructures of yttrium-substituted magnesium ferrites (MgFe_2-<em>x</em>Y_<em>x</em>O₄; where <em>x</em> = 0.0, 0.02, 0.04, 0.06, 0.08, and 0.10) were synthesized using microwave hydrothermal method at a synthesis temperature of 200 °C/60 min. X-ray diffraction (XRD) analysis confirmed a single-phase cubic spinel structure with a space group of Fd-3m for all samples. Morphological studies were examined with field emission scanning electron microscopy (FESEM), revealing a average grain size ranging from 60 nm to 180 nm. The band gap energy (<em>E</em>_<em>g</em>) calculated for <em>x</em> = 0.0 is 2.54 eV in tetrahedral bands and 1.84 eV in the octahedral bands. X-ray photoelectron spectroscopy (XPS) was used to analyze the compositional and chemical states of the elements. The saturation magnetization (<em>M</em>_<em>s</em>) value decreased from 18.91 emu/g (<em>x</em> = 0) to 8.41 emu/g (<em>x</em> = 0.10). The coercivity (<em>H</em>_<em>c</em>) is significantly higher for <em>x</em> = 0.02 (22.75 Oe) in comparison to MgFe₂O₄ (1.95 Oe). Dielectric constant (<em>ε</em>′) and loss tangent (tanδ) were measured over a wide frequency range (100 Hz–1 MHz). A significant change in dielectric properties was observed with yttrium substitution; the <em>ε</em>′ decreased from 28 (<em>x</em> = 0.0) to 9 for <em>x</em> = 0.10, while tanδ values ranged from 4.15 (<em>x</em> = 0.0) to 2.54 (<em>x</em> = 0.10).</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130528"},"PeriodicalIF":4.3,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation of scanning micro-arc oxidation ceramic coating on aluminum alloy under different current working modes","authors":"Zhiqiang Zhu ,&nbsp;Shubo Li ,&nbsp;Zhichen Xue ,&nbsp;Zhenhua Liu ,&nbsp;Nan Tu ,&nbsp;Hailin Lu","doi":"10.1016/j.matchemphys.2025.130538","DOIUrl":"10.1016/j.matchemphys.2025.130538","url":null,"abstract":"<div><div>Micro-arc oxidation is a conventional surface treatment technology. Usually, the workpiece is placed in an electrolyte for oxidation to improve its surface properties. However, this method has obvious limitations, namely, it is difficult to effectively process large workpieces, or the processing process may not be convenient enough. To solve this problem, this paper proposes a non-immersion micro-arc oxidation process, namely scanning micro-arc oxidation, which uses a three-axis slide to control the cathode movement for scanning micro-arc oxidation without immersing the sample metal in the electrolyte. At the same time, scanning micro-arc oxidation is performed by adjusting the working mode of the power supply, and the effect of the current mode on the performance of micro-arc oxidation ceramic coatings is studied. The relationship between the current mode and the thickness, hardness, wear resistance, and corrosion resistance of the ceramic coating is revealed through various characterization techniques. Using a three-axis slide to realize scanning micro-arc oxidation and explore the performance of micro-arc oxidation ceramic coatings under different current modes is expected to optimize the micro-arc oxidation process in specific application scenarios.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"336 ","pages":"Article 130538"},"PeriodicalIF":4.3,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}