Materialwissenschaft und Werkstofftechnik最新文献

{"title":"Role of composition in alumina (Al2O3)/316 stainless steel composite coating for enhanced tribological and corrosion performance\u0000 Einfluss der Zusammensetzung in einer Verbundbeschichtung aus Aluminiumoxid (Al2O3) und Edelstahl 316 zur Verbesserung der tibologischen Eigenschaften und des Korrosionswiderstandes","authors":"A. Tyagi,&nbsp;M. Das,&nbsp;S. Kapil","doi":"10.1002/mawe.70062","DOIUrl":"10.1002/mawe.70062","url":null,"abstract":"<p>Composite coatings are used in automotive, aerospace, electronics, and manufacturing for their ability to enhance durability, corrosion, and wear resistance in harsh environments. Steel composites with high alumina content show promise but face challenges in adherence and densification. This study investigates the tribological and corrosion properties of alumina/stainless steel 316 composite coatings fabricated using an in-house developed non-pneumatic directed energy deposition system. Effect of different alumina/ stainless steel 316 coating compositions on tribological and corrosion behavior of the substrate is evaluated by varying the weight percent of the aluminum oxide (10 %, 20 %, 30 % and 40 %). The coatings exhibit significantly better wear resistance than the substrate, whose friction coefficient is 0.59 ± 0.015. In contrast, coatings I, II, III, and IV show lower values of 0.45 ± 0.007, 0.38 ± .009, 0.35 ± 0.003, and 0.34 ± 0.005, resulting in a continuous decrease in friction and wear. Corrosion resistance improves with higher aluminum oxide content. The self-corrosion potentials of coatings I, II, III, and IV are −320 ± 10.1 mV, −250 ± 11.2 mV, −220 ± 6.4 mV, and −200 ± 6.3 mV, respectively, which is significantly higher than the substrate (−500 ± 13.65 mV).</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"17-25"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and optimization of dual-stage electropolishing (DSEP) for additively manufactured SS316L components\u0000 Modellierung und Optimierung des zweistufigen Elektropolierens (DSEP) für additiv gefertigte SS316L-Komponenten","authors":"R. Prakash,&nbsp;M. Das,&nbsp;R. D. Kulkarni","doi":"10.1002/mawe.70054","DOIUrl":"10.1002/mawe.70054","url":null,"abstract":"<p>This article investigates the optimization of a novel dual-stage electropolishing (DSEP) method for surface roughness improvement of additive-manufactured SS316L. Additively manufactured components, due to various inevitable conditions, such as layer-by-layer printing, powder adhesion to the molten pool, rapid heating and cooling, etc., lead to high surface roughness and other defects. These defects are prominent in complex components. Post-processing of metal additive-manufactured components remains challenging, especially for complex and miniature components. Electropolishing (EP) is an advanced machining technique to mitigate metallic components’ surface roughness and enhance their corrosion resistance as well. However, conventional electropolishing is effective when the surface roughness is low, as the material removal rate is slow. This current work is motivated by the need to improve the material removal rate of conventional electropolishing as well as the surface quality of additively manufactured SS316L components. In the first stage of dual-stage electropolishing, high voltage is supplied compared to the limited current plateau region (LCPR) to dissolve defects like partial melts and attached particles, and in the second stage, the potential difference is supplied in the limited current plateau region for further smoothening. Response surface methodology (RSM) and analysis of variance (ANOVA) are used to optimize parameters like first-stage voltage (V₁) and process durations (T₁) and (T₂). Dual-stage electropolishing reduces surface roughness by approximately 69 % compared to 49 % by conventional electropolishing. The energy-dispersive x-ray spectroscopy (EDS) analysis manifested increased iron and chromium content in the final polished sample. Additionally, potentiodynamic polarization tests confirmed a significant improvement in corrosion resistance.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"58-70"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the synthesis process for the extraction of silica from Sorghum vulgare seed heads\u0000 Evaluierung des Syntheseprozesses zur Extraktion von Kieselsäure aus Sorghum vulgare-Samenköpfen","authors":"P. Sivaprakash,&nbsp;M. Balamurugan","doi":"10.1002/mawe.70076","DOIUrl":"10.1002/mawe.70076","url":null,"abstract":"<p>The isolation of nanosilica from agricultural waste aims to convert this waste into a valuable material. After the grains are removed, the Sorghum vulgare seed heads are categorized as agricultural biomass waste, serving as an economical source of silica raw material. This study focuses on extracting pure nanosilica from Sorghum vulgare seed heads. The seed heads were calcined at high temperatures to produce ash, and the organic material was eliminated. The resulting ash was subjected to three different chemical treatments: acid (acidification), base (precipitation), and oxidation (oxidizing agent) to remove the inorganic impurities. The isolated nanosilica was characterized using powder x–ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, and energy-dispersive x–ray spectroscopy. The transmission electron microscopy results indicate that the silica obtained is at the nanoscale. The x–ray diffraction pattern reveals that the silica extracted through the acidification and oxidation process are crystalline in nature, while the silica derived using the precipitation method is amorphous in nature. The Fourier transform infrared spectroscopy spectrum further confirms the presence of silica.</p><p>Die Isolierung von Nanosilica aus landwirtschaftlichen Abfällen zielt darauf ab, diese Abfälle in ein wertvolles Material umzuwandeln. Nach der Entfernung der Körner gelten die Samenköpfe von Sorghum vulgare als landwirtschaftlicher Biomasseabfall und dienen als wirtschaftliche Quelle für Siliziumdioxid-Rohstoff. Diese Studie konzentriert sich auf die Extraktion von reinem Nanosilica aus den Samenköpfen von Sorghum vulgare. Die Samenköpfe wurden bei hohen Temperaturen kalziniert, um Asche zu erzeugen, und das organische Material wurde entfernt. Die entstandene Asche wurde drei verschiedenen chemischen Behandlungen unterzogen: Säure (Ansäuerung), Base (Fällung) und Oxidation (Oxidationsmittel), um die anorganischen Verunreinigungen zu entfernen. Das isolierte Nanosilica wurde mittels Pulverröntgenbeugung, Transmissionselektronenmikroskopie, Fourier-Transformations-Infrarotspektroskopie und energiedispersiver Röntgenspektroskopie charakterisiert. Die Ergebnisse der Transmissionselektronenmikroskopie deuten darauf hin, dass das gewonnene Siliziumdioxid im Nanomaßstab vorliegt. Das Röntgenbeugungsmuster zeigt, dass das durch Ansäuerung und Oxidation extrahierte Siliziumdioxid kristallin ist, während das durch die Fällungsmethode gewonnene Siliziumdioxid amorph ist. Das Spektrum der Fourier-Transformations-Infrarotspektroskopie bestätigt zusätzlich das Vorhandensein von Kieselsäure.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"26-32"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147570105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological analysis of pulsed laser-ablated chopped carbon fiber-reinforced magnesium matrix composites\u0000 Morphologische Analyse von gepulst-laserablativen, kurzfaserverstärkten Magnesiummatrix-Kohlenstofffaser-Verbundwerkstoffen","authors":"K. Zhou,&nbsp;Y. Wang,&nbsp;Q. Gao,&nbsp;X. Wu,&nbsp;B. Jiang,&nbsp;Z. Wu","doi":"10.1002/mawe.70078","DOIUrl":"https://doi.org/10.1002/mawe.70078","url":null,"abstract":"<p>This study systematically investigates the ablation mechanism and thermal conduction characteristics of nanosecond pulsed laser on chopped carbon fiber-reinforced magnesium matrix composites. By comparing the ablation morphologies of the chopped carbon fiber-reinforced AZ31B magnesium matrix composite and AZ31B magnesium alloy under laser power (25 W to 50 W), scanning speed (15 mm/s), and pulse frequency (30 kHz), combined with multi-scale characterization techniques such as scanning electron microscopy, the influence mechanism of carbon fiber reinforcement on laser thermal effects was revealed. Experimental results indicate that the high axial thermal conductivity of chopped carbon fibers enhances the overall thermal conductivity of the composite. Carbon fibers suppress localized matrix overheating through directional heat dissipation, while the surface oxides formed during ablation contribute to an increase in microhardness. This research provides theoretical guidance for optimizing laser processing parameters, emphasizing the critical balance between power selection and fiber distribution in controlling thermal damage.</p><p>Diese Studie untersucht systematisch den Ablationsmechanismus und die Wärmeleitungseigenschaften von Nanosekunden-Laserpulsen in kurzfaserverstärkten Magnesiummatrix-Verbundwerkstoffen mit Kohlenstofffasern. Durch den Vergleich der Ablationsmorphologien des Verbundwerkstoffs (kurzfaser-kohlenstoffverstärkte AZ31B-Magnesiummatrix) und der reinen AZ31-Magnesiumlegierung unter variierender Laserleistung (25 W bis 50 W), Scangeschwindigkeit (15 mm/s) und Pulsfrequenz (30 kHz) sowie mithilfe von Charakterisierungsmethoden wie Rasterelektronenmikroskopie wird der Einfluss der Kohlenstofffaserverstärkung auf die Laserwärmeffekte analysiert. Experimentelle Ergebnisse zeigen, dass die hohe axiale Wärmeleitfähigkeit der Kurzfasern die Gesamtwärmeleitfähigkeit des Verbundwerkstoffs signifikant verbessert. Die Kohlenstofffasern unterdrücken lokale Überhitzungen der Matrix durch gerichteten Wärmeabtransport. Die durch Ablation gebildeten Oberflächenoxide tragen zur Erhöhung der Mikrohärte bei. Diese Forschung liefert theoretische Grundlagen zur Optimierung der Laserbearbeitungsparameter und betont die kritische Balance zwischen Leistungswahl und Faserverteilung zur Kontrolle thermischer Schäden.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"33-41"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical and metallurgical characterization of SiC-reinforced friction stir welded joints of dissimilar AZ91D and AA6061-T6 metals\u0000 Mechanische und metallurgische Charakterisierung von SiC-verstärkten rührreibgeschweißten Schweißverbindungen aus AZ91D und AA6061-T6","authors":"S. Gaurav,&nbsp;M. Zunaid,&nbsp;R. Shyam Mishra","doi":"10.1002/mawe.70063","DOIUrl":"https://doi.org/10.1002/mawe.70063","url":null,"abstract":"<p>The friction stir welding (FSW) of dissimilar metals, such as aluminum AA6061-T6 and magnesium AZ91D, presents challenges due to their limited metallurgical compatibility and the tendency to form brittle intermetallic compounds (IMCs), limiting the mechanical performance of the joints. These challenges limit their wider application in weight-sensitive industries such as the aerospace and automotive sectors. To overcome this, the present work investigates the influence of process parameters on the mechanical and microstructural characteristics of dissimilar friction stir welding joints reinforced with silicon carbide (SiC) nanoparticles, using a groove arrangement in the contact surfaces to minimize nanoparticle dissipation. A process insight was established to identify the optimal parameters for friction stir welding. Silicon carbide nanoparticles were incorporated into the weld samples to refine the microstructures of welded joints. The mixing behaviour, formation of intermetallic compounds, microstructures of the weld, and mechanical properties of the weldments corresponding to various welding process parameters, such as tool rotation speed (TRS) and traverse speed (TS) at constant tool tilt angle (TTA) of 2°, were investigated. Results revealed that SiC reinforcement effectively refined the microstructure through a pinning mechanism and promoted challenging intermetallic phase formation. Among the tested parametric combinations, the joint fabricated at 700 min⁻¹ tool rotational speed and 25 mm/min traverse speed exhibited the highest tensile strength of 115 MPa, with a strain of 6.6 % and joint efficiency of 52.51 %, and a microhardness of 88.9 HV 0.1, representing a significant improvement over the unreinforced joint. These findings demonstrate the potential of SiC nanoparticle reinforcement and provide practical insights for achieving enhanced-strength, defect-free dissimilar aluminum/magnesium welds.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"71-86"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impressum: Materialwiss. Werkstofftech. 1/2026","authors":"","doi":"10.1002/mawe.70085","DOIUrl":"10.1002/mawe.70085","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Evaluation of the synthesis process for the extraction of silica from Sorghum vulgare seed heads\u0000 Evaluierung des Syntheseprozesses zur Extraktion von Kieselsäure aus Sorghum vulgare-Samenköpfen","authors":"P. Sivaprakash,&nbsp;M. Balamurugan","doi":"10.1002/mawe.70076","DOIUrl":"10.1002/mawe.70076","url":null,"abstract":"<p>The isolation of nanosilica from agricultural waste aims to convert this waste into a valuable material. After the grains are removed, the Sorghum vulgare seed heads are categorized as agricultural biomass waste, serving as an economical source of silica raw material. This study focuses on extracting pure nanosilica from Sorghum vulgare seed heads. The seed heads were calcined at high temperatures to produce ash, and the organic material was eliminated. The resulting ash was subjected to three different chemical treatments: acid (acidification), base (precipitation), and oxidation (oxidizing agent) to remove the inorganic impurities. The isolated nanosilica was characterized using powder x–ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, and energy-dispersive x–ray spectroscopy. The transmission electron microscopy results indicate that the silica obtained is at the nanoscale. The x–ray diffraction pattern reveals that the silica extracted through the acidification and oxidation process are crystalline in nature, while the silica derived using the precipitation method is amorphous in nature. The Fourier transform infrared spectroscopy spectrum further confirms the presence of silica.</p><p>Die Isolierung von Nanosilica aus landwirtschaftlichen Abfällen zielt darauf ab, diese Abfälle in ein wertvolles Material umzuwandeln. Nach der Entfernung der Körner gelten die Samenköpfe von Sorghum vulgare als landwirtschaftlicher Biomasseabfall und dienen als wirtschaftliche Quelle für Siliziumdioxid-Rohstoff. Diese Studie konzentriert sich auf die Extraktion von reinem Nanosilica aus den Samenköpfen von Sorghum vulgare. Die Samenköpfe wurden bei hohen Temperaturen kalziniert, um Asche zu erzeugen, und das organische Material wurde entfernt. Die entstandene Asche wurde drei verschiedenen chemischen Behandlungen unterzogen: Säure (Ansäuerung), Base (Fällung) und Oxidation (Oxidationsmittel), um die anorganischen Verunreinigungen zu entfernen. Das isolierte Nanosilica wurde mittels Pulverröntgenbeugung, Transmissionselektronenmikroskopie, Fourier-Transformations-Infrarotspektroskopie und energiedispersiver Röntgenspektroskopie charakterisiert. Die Ergebnisse der Transmissionselektronenmikroskopie deuten darauf hin, dass das gewonnene Siliziumdioxid im Nanomaßstab vorliegt. Das Röntgenbeugungsmuster zeigt, dass das durch Ansäuerung und Oxidation extrahierte Siliziumdioxid kristallin ist, während das durch die Fällungsmethode gewonnene Siliziumdioxid amorph ist. Das Spektrum der Fourier-Transformations-Infrarotspektroskopie bestätigt zusätzlich das Vorhandensein von Kieselsäure.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"26-32"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147570106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover Picture: (Materialwiss. Werkstofftech. 1/2026)","authors":"","doi":"10.1002/mawe.70084","DOIUrl":"10.1002/mawe.70084","url":null,"abstract":"<p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Mechanical and metallurgical characterization of SiC-reinforced friction stir welded joints of dissimilar AZ91D and AA6061-T6 metals\u0000 Mechanische und metallurgische Charakterisierung von SiC-verstärkten rührreibgeschweißten Schweißverbindungen aus AZ91D und AA6061-T6","authors":"S. Gaurav,&nbsp;M. Zunaid,&nbsp;R. Shyam Mishra","doi":"10.1002/mawe.70063","DOIUrl":"10.1002/mawe.70063","url":null,"abstract":"<p>The friction stir welding (FSW) of dissimilar metals, such as aluminum AA6061-T6 and magnesium AZ91D, presents challenges due to their limited metallurgical compatibility and the tendency to form brittle intermetallic compounds (IMCs), limiting the mechanical performance of the joints. These challenges limit their wider application in weight-sensitive industries such as the aerospace and automotive sectors. To overcome this, the present work investigates the influence of process parameters on the mechanical and microstructural characteristics of dissimilar friction stir welding joints reinforced with silicon carbide (SiC) nanoparticles, using a groove arrangement in the contact surfaces to minimize nanoparticle dissipation. A process insight was established to identify the optimal parameters for friction stir welding. Silicon carbide nanoparticles were incorporated into the weld samples to refine the microstructures of welded joints. The mixing behaviour, formation of intermetallic compounds, microstructures of the weld, and mechanical properties of the weldments corresponding to various welding process parameters, such as tool rotation speed (TRS) and traverse speed (TS) at constant tool tilt angle (TTA) of 2°, were investigated. Results revealed that SiC reinforcement effectively refined the microstructure through a pinning mechanism and promoted challenging intermetallic phase formation. Among the tested parametric combinations, the joint fabricated at 700 min⁻¹ tool rotational speed and 25 mm/min traverse speed exhibited the highest tensile strength of 115 MPa, with a strain of 6.6 % and joint efficiency of 52.51 %, and a microhardness of 88.9 HV 0.1, representing a significant improvement over the unreinforced joint. These findings demonstrate the potential of SiC nanoparticle reinforcement and provide practical insights for achieving enhanced-strength, defect-free dissimilar aluminum/magnesium welds.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"71-86"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of bio-mimetic low surface energy modified copper- aluminum based superhydrophobic coating enhancing anti-corrosion efficiency of metal by electro-assisted deposition\u0000 Verbesserte Korrosionsbeständigkeit von Metall durch elektrochemisch unterstützte Abscheidung einer biomimetischen, oberflächenenergieverringerten, modifizierten, superhydrophoben Beschichtung auf Kupfer-Aluminiumbasis","authors":"H. P. Mamgain,&nbsp;R. Brajpuriya,&nbsp;P. R. Pati,&nbsp;J. K. Pandey","doi":"10.1002/mawe.70077","DOIUrl":"10.1002/mawe.70077","url":null,"abstract":"<p>Corrosion is an electrochemical process that degrade material's malleability, ductility, and mechanical strength, leading to significant economic losses. Conventional coatings available in the market have limitations, including high thickness, low anti-corrosion efficiency, and poor stability. Recently, superhydrophobic coatings have gained visibility due to their diverse applications, including corrosion resistance. In this study, copper-aluminum superhydrophobic coating is electrodeposited onto a steel substrate under varying deposition voltages and times. The coating is further modified with stearic acid, achieving a contact angle of 152°. To analyze the coating's characteristics, x-ray diffraction analysis, fourier transform infrared spectroscopy, microstructure and roughness analysis, and open-circuit voltammetry are conducted. The results confirmed the crystalline nature, lattice parameters, and grain sizes of copper (19.32 nm) and aluminum (22.45 nm). Corrosion resistance measurements demonstrated significant improvements, with an anti-corrosion efficiency of 98 %, polarization resistance of 82,300 Ω·cm², and an exceptionally low corrosion rate of 3.4 · 10⁻¹³ mm/year. The enhanced corrosion resistance is attributed to the rough nano-flower structure, which minimizes electrolyte contact and reduces the exposed surface area. Copper-aluminum composite coating has been engineered and functionalized with stearic acid to achieve robust superhydrophobicity. This innovative approach combines hierarchical structuring with low-surface-energy modification, offering exceptional corrosion protection.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 1","pages":"42-48"},"PeriodicalIF":1.1,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}