Bulletin of Materials Science最新文献

{"title":"Transient energy absorption characteristics and interlaminar fracture toughness of glass/epoxy composites with recycled milled fillers","authors":"Indhumathi Elango,&nbsp;J Jefferson Andrew,&nbsp;Arumugam Vellayaraj","doi":"10.1007/s12034-025-03401-w","DOIUrl":"10.1007/s12034-025-03401-w","url":null,"abstract":"<div><p>Advanced composites are increasingly used in aircraft and automotive structures, highlighting the need to address delamination, a critical failure mode caused by interlaminar weakness. Also the end-of-life of composite material is challenging. The interlaminar fracture toughness, impact resistance and residual flexural performance of glass/epoxy composites with recycled milled carbon fibre (rmCF) and recycled milled Kevlar fibre (rmKF) fillers are examined in this study. This novel approach blends recycled fillers (rmBF) and tests their effects on interlaminar fracture toughness, crash performance, and residual strength using modes I, II, mixed mode I/II and drop weight impact tests. Filler-loaded samples show a remarkable increase in fracture toughness, with initiation improvements of 319, 31 and 200% and propagation improvements of 83, 14.4 and 172.3% in modes I, II and mixed mode. Up to 15% improvement was seen in the impact performance index and a 10% increase in residual strength. FTIR is used to correlate the effects of rmCF, rmKF and rmBF on interfacial properties, while SEM micrographs show how the filler-modified matrix toughens interlaminar fractures. This research helps improve composite material performance and sustainability.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638639","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":"Effect of filler-resin ratio on the physical, mechanical and durability properties of heavy aggregate-based polymer composites","authors":"HASAN POLAT","doi":"10.1007/s12034-025-03405-6","DOIUrl":"10.1007/s12034-025-03405-6","url":null,"abstract":"<div><p>In this study, the effect of resin-filler ratio on the physical, mechanical and durability properties of polymer composites was investigated. Iron-manganese (IM) aggregate was used as filling material. Within the study, polymer composite samples were produced using six different resin-filler ratios (15–85%, 20–80%, 25–75%, 30–70%, 35–65% and 40–60%). The specimens were examined and tested for apparent density, water absorption, porosity, ultrasonic pulse velocity (UPV), compressive strength, flexural strength, freeze-thaw (FT) cycles and compressive strength after sulphate impact. The results obtained showed that the resin-fill ratio had a significant effect on the homogeneous distribution of aggregates. While structural integrity could not be achieved when the resin content was below 15%, significant segregation problems occurred when the resin content was above 40%. It was also determined that the increase in resin ratio led to a decrease in apparent density, water absorption and porosity values, while increasing UPV, compressive strength, flexural strength and durability properties. Additionally, FTIR analysis revealed similar vibration peaks across all composite samples. In the P35IM65 and P40IM60 samples, the increased polyester content filled the gaps between the IM aggregates, resulting in a more cohesive matrix-aggregate interface. Optimizing the resin/filler ratio is a complex process that requires a careful balance to meet the varying requirements for mechanical properties, durability and structural integrity. In this study, the optimal resin-filler ratio for ensuring the structural integrity of the aggregates was determined to be 15:85, while the most effective ratio for enhancing mechanical properties and durability was found to be 40:60.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632432","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":"Investigating the mechanical and microstructural properties of Cr modified and recycled LM25 aluminium alloys","authors":"J Gottmyers Melwyn,&nbsp;Bhagyanathan Chandragandhi","doi":"10.1007/s12034-025-03400-x","DOIUrl":"10.1007/s12034-025-03400-x","url":null,"abstract":"<div><p>Recycled aluminium alloys are increasingly favoured for their environmental and economic benefits; however, maintaining and enhancing their mechanical properties is critical. In this study, we investigate the mechanical and microstructural properties of recycled LM25 aluminium alloys modified with additions chromium (Cr). The introduction of Cr as a modifier is explored to enhance the strength and structural integrity of LM25 alloys, which are widely used in automotive applications. Scraps were recycled to form LM25 alloys, and chromium was added in powdered form at predetermined levels, followed by mechanical testing, wear, corrosion analysis, and microstructural analysis using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results reveal a significant improvement in tensile strength and hardness with the addition of Cr, attributed to refined microstructures and the formation of stable intermetallic phases. Furthermore, the microstructural analysis indicated a notable reduction in grain size and a more uniform phase distribution in Cr-modified alloys. The Cr modification enhances the wear and corrosion resistance of the LM25 alloy by forming a passive barrier. These findings underscore the potential of Cr as an effective alloying element in recycled LM25 aluminium alloys, contributing to improved performance characteristics suitable for demanding applications.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632375","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":"Effects of nitriding parameters on the microstructure and properties of laser-cladding and plasma-nitriding composite modified layers","authors":"Shuying Jiang,&nbsp;Hongming Xu,&nbsp;Ming Zhao,&nbsp;Wanqun Huang","doi":"10.1007/s12034-025-03404-7","DOIUrl":"10.1007/s12034-025-03404-7","url":null,"abstract":"<div><p>In order to further improve the wear and corrosion resistance of traditional nitriding steel parts, the Cr₂Ni₁Ti_0.05La_0.05 laser-cladding and plasma-nitriding composite modified layers were prepared on N80 steel surface. The effects of plasma-nitriding temperature and time on the microstructure, wear and corrosion resistance of the modified layers were studied. The composite-treated nitriding layers are mainly composed of CrN phase and the content of γ′-Fe₄N increases with the increase of the nitriding temperature and holding time. The hardness of the cladding layer is three times that of the N80 substrate, which effectively reduces the hardness gradient and enhances the strength support for the nitriding layer. The structure of the nitriding layer at 460°C for 10 h is the most compact one and it has the best wear and corrosion resistance. Compared with the uncladded nitrided sample, its nitrided thickness is increased by 5.4 times, its wear weight loss is reduced by 90%, its self-corrosion potential is increased by 0.288V and its self-corrosion current density is decreased by 96%, the wear resistance and corrosion resistance have been significantly enhanced.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632431","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":"Promoting mechanism for the pyrolysis of NEPE propellant key components by small groups","authors":"Zhengcheng We,&nbsp;Zhengyin Yang,&nbsp;Yiyi Wu,&nbsp;Heping Li","doi":"10.1007/s12034-025-03402-9","DOIUrl":"10.1007/s12034-025-03402-9","url":null,"abstract":"<div><p>Nitrate ester plasticized polyether (NEPE) propellant exhibits high energy and favourable mechanical properties, rendering it a promising choice for propulsion systems. Nonetheless, the lack of comprehensive microscale pyrolysis mechanism investigations has hindered its further advancement. During the thermal decomposition process, NEPE releases various small groups, including NO, NO₂, OH, NH₂ and HCN. Studies indicate that these small groups play a significant role in promoting pyrolysis. Therefore, this study employs quantum chemistry to explore the promoting mechanism of key components in NEPE propellant by small groups. Specifically, the promotion mechanisms of the oxidant HMX and the binder PEG/NG/BTTN by small groups are calculated and analysed. Initially, the adsorption mechanism for each promotion mechanism is determined through electrostatic potential analysis, followed by the calculation of reaction paths and energy barriers. The results reveal that the energy barriers for the pyrolysis of HMX/PEG/NG/BTTN promoted by small groups are notably lower compared to direct pyrolysis. Particularly, the energy barriers for the pyrolysis of HMX/PEG/NG/BTTN (87.5, 22.7, 120.0, 249.0 kJ·mol⁻¹) promoted by the OH radical are significantly lower than those for direct pyrolysis (200.6, 305.3, 146.1, 278.4 kJ·mol⁻¹). The pyrolysis of NEPE key components is substantially enhanced by small groups, particularly the OH radical. This research contributes valuable theoretical insights for regulating the pyrolysis behaviour of NEPE propellants.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594825","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":"Use of dielectric nanoparticles doped with rare-earth ions for the treatment of melanoma with non-contact exposure to near-IR laser radiation (in-vivo experiments)","authors":"POLINA A RYABOCHKINA,&nbsp;SVETLANA A KHRUSHCHALINA,&nbsp;OLEG A KULIKOV,&nbsp;VASILISA I SHLYAPKINA,&nbsp;VALENTIN P AGEEV,&nbsp;NATALIYA YU TABACHKOVA,&nbsp;VARVARA O VESELOVA","doi":"10.1007/s12034-025-03399-1","DOIUrl":"10.1007/s12034-025-03399-1","url":null,"abstract":"<div><p>Excitation of dielectric nanoparticles highly doped with rare-earth (RE) ions by intense laser radiation can lead to their significant heating. This effect can be used to enhance the thermal effect of laser radiation on biological tissues. This work is devoted to study the features of a thermal emission in compounds based on zirconium dioxide doped with various RE ions in order to identify the type of RE ion and excitation conditions that are most suitable for the described application. <i>In-vitro</i> experiments using the particles studied in this work and earlier, showed that the enhancement of the thermal effect of laser radiation is most pronounced for ytterbium-containing particles and radiation with a wavelength of 970 nm. As a result of <i>in-vivo</i> experiments (on mice), the possibility of using ytterbium-containing particles when excited by laser radiation with a wavelength of 970 nm for the treatment of B16 melanoma has been demonstrated.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594827","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":"Influence of silver nanoparticles on blue phase liquid crystals","authors":"Alka Devi,&nbsp;Samriti Khosla,&nbsp;Suman Lal,&nbsp;Nitin Sood","doi":"10.1007/s12034-024-03388-w","DOIUrl":"10.1007/s12034-024-03388-w","url":null,"abstract":"<div><p>The blue phase liquid crystal (BPLC) is a highly ordered liquid crystal (LC) phase that exists between cholesteric and isotropic phases in highly chiral liquid crystals. The BPLC has potential applications in next-generation display and photonic technology because of its unique properties such as polarizer-free fabrication, controllable Bragg reflection, sub-millisecond response time and wide viewing angle. BPLC is stable in a very small temperature range (0.5–1°C) and high driving voltage. To overcome these challenges, many new methods are being studied that increase the temperature range. The recent research focuses on studying the effect of the inclusion of silver nanoparticles onto the phase transition behaviour of blue phase materials. The effect is analysed using the polarizing microscopy and further confirmed by temperature-dependent dielectric spectroscopy.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594826","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":"Biosorbent derived from plant tannin for selective removal of Cu(II) from aqueous solutions at low concentration","authors":"Wenqian Qi,&nbsp;Bo Deng,&nbsp;Hui Mao","doi":"10.1007/s12034-024-03379-x","DOIUrl":"10.1007/s12034-024-03379-x","url":null,"abstract":"<div><p>Despite the low levels of copper ions in aquatic environments, excessive concentrations of copper ions can eventually cause serious harm to animals and humans as they are biologically enriched and ecologically cycled. Herein, an appropriate and selective separating material for copper ions with low concentrations needs to be developed. In the present work, bayberry tannin-modified chitosan fibres (TMF) were fabricated for selective removal of Cu²⁺. The adjacent phenolic hydroxyl groups at the B ring of tannin enable them to chelate with heavy metal ions, while the fibre structure of chitosan is conducive to the extended distribution of the active sites. It showed an adsorption capacity of 14.98 mg g^–1 for Cu²⁺ at 303 K, which was higher than that of most conventional adsorbents and activated carbon. Moreover, in the presence of co-existing heavy metal ions, including Ni²⁺, Cd²⁺, Fe³⁺ and Cr³⁺, we found that TMF showed highly selective adsorption of Cu²⁺, with Cu²⁺ concentrations as low as 5 mg l^–1. The TMF can be robustly recycled through acid treatment with 96.6% desorption efficiency.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529921","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":"Investigation of inhibitive property of hydroxypropyl methylcellulose on acid corrosion of copper using experimental and computational simulation techniques","authors":"Innocent O Arukalam,&nbsp;Ikechukwu N Uzochukwu,&nbsp;Remy Uche,&nbsp;Daniel I Udunwa,&nbsp;Chijioke P Egole,&nbsp;Agha I Ndukwe","doi":"10.1007/s12034-024-03381-3","DOIUrl":"10.1007/s12034-024-03381-3","url":null,"abstract":"<div><p>The inhibitive property of hydroxypropyl methylcellulose (HPC) on acid (1.0 M HCl and 0.5 M H₂SO₄) corrosion of copper was investigated using gravimetric, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and computational simulation techniques. Gravimetric results showed decrease in weight loss in the presence of HPC at room temperature of 25°C. With increase in temperature from 30–60°C, weight gain was observed which indicates that HPC film was adsorbed on the Cu surface. According to impedance measurement results, HPC displayed better inhibition in the presence of HCl (I.E._Rct% = 23.99) than in the presence of H₂SO₄ with 19.98 inhibition efficiency. Potentiodynamic polarization tests showed HPC inhibited HCl solution with I.E.% of 43.69 whereas 19.05 I.E.% was obtained for HPC in H₂SO₄ acid solution. Nonetheless, HPC acted as a mixed-type inhibitor with predominant cathodic effect. The DFT calculations showed that E_Homo is − 5.504 eV, while E_Lumo is 0.859 eV and energy gap is 6.363 eV. These values indicate that HPC inhibitor molecules are highly reactive and can readily transfer as well as accept electrons during copper surface-inhibitor interactions. Molecular dynamics simulation showed the adsorption energy (<i>E</i>_ads) for HPC on copper in the presence of 0.5 M H₂SO₄ solution was determined to be − 1.277 kcal/mol (− 5.108 kJ/mol), while <i>E</i>_ads for HPC on copper in the presence of 1.0 M HCl solution was − 1.55 kcal/mol (− 6.485 kJ/mol). The higher negative value of <i>E</i>_ads for HPC in the presence of HCl indicates stronger adsorption. Based on the observed results, HPC could be used as corrosion inhibitor for protection against corrosion of copper in 0.5 M H₂SO₄ acid solution but better in 1.0 M HCl acid solution.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521652","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":"Bifunctional electrocatalysis with silk cocoon-shaped CdMn2O4 nanoparticles for Zn–air batteries","authors":"Kammari Sasidharachari,&nbsp;Maritoni Buenviaje,&nbsp;Sukeun Yoon","doi":"10.1007/s12034-024-03389-9","DOIUrl":"10.1007/s12034-024-03389-9","url":null,"abstract":"<div><p>Morphology-controlled catalyst nanoparticles have attracted significant research interest owing to their fundamental and scientific importance. In particular, their crystallographic orientation dependent properties greatly impact their electrocatalytic activity towards the oxygen reduction and evolution reactions. Herein, a CdMn₂O₄ catalyst with silk cocoon-shaped particles is synthesised via a solvothermal approach, and its bifunctional electrocatalytic activity in Zn–air batteries is studied. The catalyst is composed of three-dimensionally interconnected nanoparticles, which provide a highly accessible coordination environment around its surface, and a large number of exposed active sites. Compared with commercial 20 wt% Pt/C and IrO₂ catalysts, the CdMn₂O₄ catalyst exhibits a significantly reduced charge−discharge voltage gap, superior cycling stability and higher round-trip efficiency. Electrochemical redox species are present on the cocoon-shaped catalyst surface without perturbing its structure, and increase the number of reactive sites formed by defective O₂⁻ species, thereby providing sufficient structural stability. This work provides a new understanding that can aid in the design of highly efficient bifunctional electrocatalysts and structural engineering of silk cocoon-shaped materials to replace noble-metal catalysts or non-noble spinel electrocatalysts for Zn–air batteries.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521647","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}