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The effect of automated fiber placement process parameters on interlaminar shear strength of uncured prepreg bonded samples.

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Composite Materials

Pub Date : 2025-05-01 Epub Date: 2025-01-11 DOI: 10.1177/00219983241313280

Meisam Kheradpisheh, Amir Hafez Yas, Mehdi Hojjati

The effects of automated fiber placement (AFP) parameters on the inter-laminar bonding between the uncured thermoset prepreg tapes were investigated using a systematic series of experiments and FE analysis. The goal was to optimize inter-laminar bonding during the AFP lay-up process and provide a model for the interlayer bonding of uncured prepreg tapes during this process. The shear strength of the interfacial bonding plays a pivotal role in the formation of planar and non-planar deformations during the automated fiber placement (AFP) process. The quality of this bonding has a significant effect on the quality of the manufactured parts. Besides, the bonding strength is interconnected with various AFP process parameters including compaction roller, feed rate, temperature, and dwell time. Hence, a systematic series of experimental studies are conducted to investigate how changes in process parameters affect the shear strength of single lap joint (SLJ) specimens produced under various process conditions. To fabricate the single-lap joint samples under different conditions, an in-house setup was developed to simulate the AFP process allowing us to control compaction force, feed rate, temperature, and dwell time during the process. The experimental results of the single lap joints indicate that the shear strength of the bonded prepreg tows is significantly influenced by the interaction among the process parameters rather than by their individual, isolated effects. Moreover, the responses of prepreg SLJs are simulated using the FE method. Through the comparison of numerical and experimental results, it will be clearly shown that the developed FE framework can act as a reliable approach for modeling the bonding layer between prepreg tapes.

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引用次数: 0

Self-nucleation growth of bimetallic niobium tungsten oxide electrodes with delaminated nanostructure for excellent dual-band electrochromic performance

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2025-04-09 DOI: 10.1016/j.surfin.2025.106383

Mengtao Sun , Sijia Han , Yu Zeng , Fangyuan Zhao , Likun Wang , Sainan Ma , Guohua Shi , Qiying Liu , Yong Liu , Gaorong Han

Dual-band electrochromic (EC) smart windows, dynamically and independently controlling the transmittance of near-infrared (NIR) and visible (VIS) light, can significantly reduce the energy consumption of buildings. Here, we provide a self-nucleation solvothermal strategy to prepare nanostructured bimetallic niobium tungsten oxide (Nb₁₈W₁₆O₉₃, NWO) on FTO substrates featuring a delaminated manner with a bush-like morphology composed of nanoneedles as the upper layer and a dense structure comprising nanoparticles as the down layer. Such structure combines good adhesion to the substrate and great electrochemical activity, leading to excellent dual-band electrochromic properties, including large optical modulation (72.6 % at 633 nm and 86.6 % at 1600 nm), high color rendering efficiencies (41.9 cm²/C at 633 nm and 53.2 cm²/C at 1600 nm), and long cyclic stability (retaining 85.4 % at 633 nm and nearly 100 % at 1600 nm after 1500 cycles). The as-prepared NWO electrode achieves three types of electrochromic effects: bright, cold, and dark electrochromic modes corresponding to the different threshold potentials of W and Nb elements during the electrochromic process. These results demonstrate that the nanostructured Nb₁₈W₁₆O₉₃ has promising performance as smart window electrodes in energy-saving buildings and propose a one-step template-free way to synthesize films with complex nanostructures.

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引用次数: 0

Novel scandium-doped cobalt chromate: Dopamine sensing and superior supercapacitor performance

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-04-09 DOI: 10.1016/j.mseb.2025.118306

Nandini Robin Nadar , J. Deepak , S.C. Sharma , B.R. Radha Krushna , Chitathoor Sridhar , Subhashree Ray , R. Vini , H. Nagabhushana , R. Sowjanya , Puneeth B

This study explores the electrochemical properties of scandium-doped cobalt chromate (SCC) for use in supercapacitors and dopamine sensors. The SCC-modified carbon paste electrode (MCPE) demonstrated a significantly enhanced electrochemically active surface area. Additionally, the SCC MCPE showed superior selectivity for dopamine (DA) detection, with a limit of detection (LOD) of 0.329 µM and an exceptional linear response (R² = 0.998) distinguishing DA from uric acid (UA), alongside a stability of approximately 91 % over 20 cycles. Cyclic voltammetry (CV) indicated enhanced redox behavior due to the incorporation of scandium. For supercapacitor applications, SCC nanocomposites were evaluated using CV and galvanostatic charge/discharge techniques, showing a specific capacitance of 250.53F g⁻¹ at 2 mV s⁻¹, excellent stability over 5000 cycles with an 83.33 % retention rate, and notable energy storage and power delivery capabilities as illustrated by the Ragone plot. These findings underscore the potential of SCC nanocomposites for advanced electrochemical applications.

{"title":"Novel scandium-doped cobalt chromate: Dopamine sensing and superior supercapacitor performance","authors":"Nandini Robin Nadar , J. Deepak , S.C. Sharma , B.R. Radha Krushna , Chitathoor Sridhar , Subhashree Ray , R. Vini , H. Nagabhushana , R. Sowjanya , Puneeth B","doi":"10.1016/j.mseb.2025.118306","DOIUrl":"10.1016/j.mseb.2025.118306","url":null,"abstract":"<div><div>This study explores the electrochemical properties of scandium-doped cobalt chromate (SCC) for use in supercapacitors and dopamine sensors. The SCC-modified carbon paste electrode (MCPE) demonstrated a significantly enhanced electrochemically active surface area. Additionally, the SCC MCPE showed superior selectivity for dopamine (DA) detection, with a limit of detection (LOD) of 0.329 µM and an exceptional linear response (R<sup>2</sup> = 0.998) distinguishing DA from uric acid (UA), alongside a stability of approximately 91 % over 20 cycles. Cyclic voltammetry (CV) indicated enhanced redox behavior due to the incorporation of scandium. For supercapacitor applications, SCC nanocomposites were evaluated using CV and galvanostatic charge/discharge techniques, showing a specific capacitance of 250.53F g<sup>−1</sup> at 2 mV s<sup>−1</sup>, excellent stability over 5000 cycles with an 83.33 % retention rate, and notable energy storage and power delivery capabilities as illustrated by the Ragone plot. These findings underscore the potential of SCC nanocomposites for advanced electrochemical applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"318 ","pages":"Article 118306"},"PeriodicalIF":3.9,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800007","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}

引用次数: 0

A comprehensive review on Mg-doped ZnO thin film and nanostructure: Properties and applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2025-04-09 DOI: 10.1016/j.mseb.2025.118251

Niamat Forazi Bappy, Shanmugan Subramani

Zinc oxide, which possesses a wurtzite crystal structure, is a highly versatile material recognized for its excellent conductivity, optical transparency, and wide-ranging applications in electronics, optoelectronics, and biomedical fields. Among various modifications, magnesium-doped zinc oxide has garnered significant attention for its ability to tailor the properties of zinc oxide, thereby making it suitable for advanced industrial applications. Magnesium doping enables precise control over structural, optical, electrical, and thermal characteristics, resulting in enhanced crystallinity, a modified bandgap, and improved morphological properties. Magnesium-doped zinc oxide nanostructures, including thin films, nanorods, and nanotubes, exhibit diverse functionalities that broaden their applications in thin-film transistors, light-emitting diodes, solar cells, biosensors, and gas sensors. Most published reviews have concentrated on the properties or applications of magnesium-doped zinc oxide thin films and nanostructures. However, there is a notable gap in reviews correlating both the properties and applications of magnesium-doped zinc oxide, which this comprehensive review seeks to address. It investigates the effects of magnesium-doped zinc oxide properties, particularly regarding its structural and morphological evolution, as well as its thermal and optical behavior. Key findings underscore how magnesium incorporation impacts lattice strain, modulates defect density, and promotes nanostructural modification factors that are critical for performance improvements in optoelectronics, biomedical, and energy devices. This review emphasizes the transformative potential of magnesium-doped zinc oxide nanostructures in advancing next-generation technologies by integrating findings from a broad spectrum of applications. It also offers insights into experimental and theoretical approaches for synthesizing magnesium-doped zinc oxide nanostructures through various deposition methods, highlighting challenges and limitations associated with magnesium doping, such as phase separation at higher doping levels. Additionally, the review outlines potential future directions for research and innovation in this field.

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引用次数: 0

Abnormal impacts of pre-deformation on the martensitic transformation behaviors of precursory NiTiNb alloys

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia

Pub Date : 2025-04-09 DOI: 10.1016/j.scriptamat.2025.116693

Youyi Yang, Qiuzhen Li, Pengfei Gao, Jingyuan Guo, Lishan Cui, Kaiyuan Yu

While the effects of pre-deformation on thermodynamically controlled transformation behaviors have been well established in traditional shape memory alloys, it remains unclear whether similar influences apply to kinetically controlled systems. In this letter, we investigate the thermally induced transformation behaviors of pre-deformed precursory NiTiNb alloy specimens, and compare them with those of equiatomic and near-equiatomic binary NiTi of different grain sizes and transformation paths. We show that M_s of NiTiNb increases monotonically with pre-deformation strain, in sharp contrast to the scenario in binary NiTi regardless of the grain size or transformation path. In comparison, A_f of all NiTiNb and NiTi specimens are however insensitive to pre-deformation strain. We suggest that these discrepancies are likely attributed to the enhanced kinetic barrier of nucleation of the forward transformation.

引用次数: 0

Cost-effective pure and Fe-doped amorphous and composite Ni–P alloys as efficient electrocatalysts for alkaline oxygen evolution reaction

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids

Pub Date : 2025-04-09 DOI: 10.1016/j.jpcs.2025.112756

Milica M. Vasić , Vladimir A. Blagojević , Tomáš Žák , Biljana Šljukić , Dragica M. Minić

Amorphous and nanocrystalline Ni–P alloys are suitable for different applications in various fields of modern technology, including the catalytic ones. In this work, several amorphous/nanocrystalline Ni–P and Ni–Fe–P alloys were prepared in powder form by simple chemical reduction method, using different reactants ratios, and studied in terms of electrocatalytic activity for oxygen evolution reaction (OER) in alkaline environment (0.1 M KOH). The prepared samples were thoroughly characterized regarding their microstructural properties and electrochemical behavior. Their OER performance considerably outperformed that of pure Ni (fcc) powder, and was strongly influenced by their composition and microstructure. Due to its specific electronic structure, mostly amorphous Fe-containing Ni–P-based alloy demonstrated OER activity superior to all other samples, according to low Tafel slope of 72 mV dec⁻¹ and overpotential at 10 mA cm⁻² of 0.35 V, and relatively good durability. Quantum chemical calculations additionally confirmed the beneficial effect of Fe addition on the OER performance of Ni–P materials. The findings arising from this study contribute to further development of cost-effective, efficient and durable non-noble metal-based electrocatalysts for OER, with a view to future progress in the field of clean energy.

{"title":"Cost-effective pure and Fe-doped amorphous and composite Ni–P alloys as efficient electrocatalysts for alkaline oxygen evolution reaction","authors":"Milica M. Vasić , Vladimir A. Blagojević , Tomáš Žák , Biljana Šljukić , Dragica M. Minić","doi":"10.1016/j.jpcs.2025.112756","DOIUrl":"10.1016/j.jpcs.2025.112756","url":null,"abstract":"<div><div>Amorphous and nanocrystalline Ni–P alloys are suitable for different applications in various fields of modern technology, including the catalytic ones. In this work, several amorphous/nanocrystalline Ni–P and Ni–Fe–P alloys were prepared in powder form by simple chemical reduction method, using different reactants ratios, and studied in terms of electrocatalytic activity for oxygen evolution reaction (OER) in alkaline environment (0.1 M KOH). The prepared samples were thoroughly characterized regarding their microstructural properties and electrochemical behavior. Their OER performance considerably outperformed that of pure Ni (fcc) powder, and was strongly influenced by their composition and microstructure. Due to its specific electronic structure, mostly amorphous Fe-containing Ni–P-based alloy demonstrated OER activity superior to all other samples, according to low Tafel slope of 72 mV dec<sup>−1</sup> and overpotential at 10 mA cm<sup>−2</sup> of 0.35 V, and relatively good durability. Quantum chemical calculations additionally confirmed the beneficial effect of Fe addition on the OER performance of Ni–P materials. The findings arising from this study contribute to further development of cost-effective, efficient and durable non-noble metal-based electrocatalysts for OER, with a view to future progress in the field of clean energy.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"204 ","pages":"Article 112756"},"PeriodicalIF":4.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800286","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}

引用次数: 0

Tuning surface assembly of oleyl-capped nanoparticles in AOT microemulsion phase with optimal alkane-to-alkanol ratio

IF 4.7 3区材料科学 Q2 CHEMISTRY, PHYSICAL

Colloid and Interface Science Communications

Pub Date : 2025-04-09 DOI: 10.1016/j.colcom.2025.100836

Rebeca Fortes Martín, Sibylle Rustig, Ilko Bald, Joachim Koetz

A simplified procedure for the surface assembly of oleyl-capped nanoparticles from water-in-oil microemulsions is presented. Changing the heptane-to-pentanol ratio in the oil phase resulted in different surface assemblies. Remarkably, a minor proportion of heptane in pentanol enabled the formation of filament networks, without the assistance of other additives for clustering effects.

引用次数: 0

The application of cobalt-free spinel Ni1.4Mn1.6O4 as a cathode in intermediate temperature solid oxide fuel cells

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds

Pub Date : 2025-04-09 DOI: 10.1016/j.jallcom.2025.180288

Yu Zhou , Tianke Ye , Nengchu Xia , Wanbing Guan , Jun Yang , Liangzhu Zhu , Yunfang Gao , Anqi Wu , Jianxin Wang

In this study, a series of cobalt-free spinels Ni_1+xMn_2-xO₄ (x = 0, 0.2, 0.4, 0.6) were prepared by the solid-liquid composite method. After preparing them into full-cell tests, it was found that Ni_1.4Mn_1.6O₄ (NMO) exhibited the best performance when x = 0.4, and subsequent in-depth research was focused on NMO. NMO has good thermal expansion matching with the electrolyte layer below 700 ℃, as well as excellent mixed ionic-electronic conductivity. When employed as a cathode material in an solid oxide fuel cell (SOFC), the cell achieves a discharge power density of 1150.25 mW cm⁻² at 800 ℃. However, as the oxygen ion conduction rate decreases with decreasing temperature, the power densities at medium and low temperatures are significantly lower, with only 248.97 mW cm⁻² at 650 ℃ and 33.55 mW cm⁻² at 600 ℃. The combination of NMO with the electrolyte material 8YSZ results in a significant increase in power density at 650 °C and 600 °C, achieving 330.21 mW cm⁻² and 157.81 mW cm⁻², respectively. An SOFC with NMO-YSZ64 as the cathode demonstrates excellent long-term stability, and the voltage degradation rate is less than 1 % after 110 hours of galvanostatic discharge at 650 °C and 200 mA cm⁻². SEM analysis reveals that the microstructure of the cell remains intact after prolonged discharge and has good adhesion at the cathode-electrolyte interface. These results suggest that Ni_1.4Mn_1.6O₄ and its composite cathodes are highly promising cathode materials.

{"title":"The application of cobalt-free spinel Ni1.4Mn1.6O4 as a cathode in intermediate temperature solid oxide fuel cells","authors":"Yu Zhou , Tianke Ye , Nengchu Xia , Wanbing Guan , Jun Yang , Liangzhu Zhu , Yunfang Gao , Anqi Wu , Jianxin Wang","doi":"10.1016/j.jallcom.2025.180288","DOIUrl":"10.1016/j.jallcom.2025.180288","url":null,"abstract":"<div><div>In this study, a series of cobalt-free spinels Ni<sub>1+x</sub>Mn<sub>2-x</sub>O<sub>4</sub> (x = 0, 0.2, 0.4, 0.6) were prepared by the solid-liquid composite method. After preparing them into full-cell tests, it was found that Ni<sub>1.4</sub>Mn<sub>1.6</sub>O<sub>4</sub> (NMO) exhibited the best performance when x = 0.4, and subsequent in-depth research was focused on NMO. NMO has good thermal expansion matching with the electrolyte layer below 700 ℃, as well as excellent mixed ionic-electronic conductivity. When employed as a cathode material in an solid oxide fuel cell (SOFC), the cell achieves a discharge power density of 1150.25 mW cm<sup>−2</sup> at 800 ℃. However, as the oxygen ion conduction rate decreases with decreasing temperature, the power densities at medium and low temperatures are significantly lower, with only 248.97 mW cm<sup>−2</sup> at 650 ℃ and 33.55 mW cm<sup>−2</sup> at 600 ℃. The combination of NMO with the electrolyte material 8YSZ results in a significant increase in power density at 650 °C and 600 °C, achieving 330.21 mW cm<sup>−2</sup> and 157.81 mW cm<sup>−2</sup>, respectively. An SOFC with NMO-YSZ64 as the cathode demonstrates excellent long-term stability, and the voltage degradation rate is less than 1 % after 110 hours of galvanostatic discharge at 650 °C and 200 mA cm<sup>−2</sup>. SEM analysis reveals that the microstructure of the cell remains intact after prolonged discharge and has good adhesion at the cathode-electrolyte interface. These results suggest that Ni<sub>1.4</sub>Mn<sub>1.6</sub>O<sub>4</sub> and its composite cathodes are highly promising cathode materials.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1024 ","pages":"Article 180288"},"PeriodicalIF":5.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystallization-resistant water-jet guided laser processing of Cu46Zr46Al8 amorphous alloy via thermally suppressed strategy

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics

Pub Date : 2025-04-09 DOI: 10.1016/j.intermet.2025.108789

Hengming Hu , Caiyun Liu , Zihuai Su , Feng Ye , Bin Qian , Ye Dai , Shengzhi Sun , Binbin Liu , Jianrong Qiu

The unique atomic packing of amorphous alloys leads to excellent properties, but the metastable amorphous nature becomes an obstacle of the processing. This study introduces Water-Jet Guided Laser (WJGL) technology to process the Cu₄₆Zr₄₆Al₈ amorphous alloy with improved surface morphology and minimal heat-affected zone. A noticeable heat-affected zone with thickness larger than 2 mm was observed in sample processed by conventional laser, while that of WJGL processing was less than 15 μm. The processing parameters of WJGL have no significant effect on the phases of the processed surface, only m-ZrO₂, t-ZrO₂, and Cu were determined. The processing surface morphology shows a strong dependence on the water pressure. Wave-like morphology formed in the processing surfaces under a water pressure of 30 MPa, which was invisible as the water pressure decreased to 10 MPa. Smaller water pressure together with lower laser power are beneficial to the surface quality, the minimum surface roughness of 0.8411 μm was obtained at the water pressure of 10 MPa and the laser power of 8 W. Finally, complex-shaped components were processed using WJGL, indicating that WJGL is a viable and effective alternative for machining amorphous alloys.

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Issue Information: Crystal Research and Technology 4'2025

IF 1.5 4区材料科学 Q3 Chemistry

Crystal Research and Technology

Pub Date : 2025-04-09 DOI: 10.1002/crat.1574

引用次数: 0

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