Bulletin of Materials Science最新文献

{"title":"Effect of one-dimensional crystal ChPbI3 absorber layer in perovskite solar cells with MXene-assisted ETLs","authors":"Mahdiyeh Meskini,&nbsp;Mohammad Ali Fooladloo,&nbsp;Saeid Asgharizadeh,&nbsp;Saeid Khesali Azadi","doi":"10.1007/s12034-025-03449-8","DOIUrl":"10.1007/s12034-025-03449-8","url":null,"abstract":"<div><p>Choline halide can effectively passivate defects by binding with charged point defects of perovskite. Experimental results at room temperature demonstrated that the reaction of ChI with CsPbI₃ resulted in the formation of a new one-dimensional (1D) crystal phase of ChPbI₃, characterized by synchrotron high-resolution single-crystal X-ray diffraction. Due to the new 1D crystalline phase, the designed structures witnessed considerable photovoltaic improvement. The SCAPS-1D simulation software was used to model a perovskite solar cell featuring a 1D ChPbI₃ absorber. We studied the performance of perovskite solar cells based on a 1D ChPbI₃ absorber layer with different electron/hole transport layers (ETL/HTL). Parameters such as power conversion efficiency (PCE), open-circuit voltage (<i>V</i>_OC), short-circuit current density (<i>J</i>_SC), fill factor (FF), external quantum efficiency (EQE), ideality factor (<i>n</i>_id), photocurrent (<i>J</i>_Ph), Mott–Schottky (M–S) plot, built-in potential (<i>V</i>_bi) and recombination resistance (<i>R</i>_rec) were calculated. The analysis of interface recombination currents indicates that the solar cell with CuSCN as the HTL and TiO₂-MXene as the ETL exhibits the highest performance. By optimizing this type of cell, it is possible to achieve an efficiency of 25.50%.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163793","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 electrospinning parameters on the morphology of UHMWPE fibres","authors":"Prajesh Nayak,&nbsp;Anup K Ghosh,&nbsp;Naresh Bhatnagar","doi":"10.1007/s12034-025-03451-0","DOIUrl":"10.1007/s12034-025-03451-0","url":null,"abstract":"<div><p>Electrospinning is the most cost-effective technique for fabricating non-woven mats of fibre ranging in size from nano to submicron. Several polymers have been effectively electrospun in ultrafine fibre form by the electrospinning technique, either in melt or solution form. This study analysed the effect of various electrospinning parameters, such as solution concentration, applied voltage, flow rate, conductivity and solvent types, on the morphology of ultra-high molecular-weight polyethylene (UHMWPE) fibres. Different solvents, such as decalin, p-xylene, p-cymene and cyclohexanone, have been used in various combinations to study the effects of solvent types. It has been observed that the concentration of the solution is critical for producing fibres instead of beads during the electrospinning process. A higher ratio of decalin in a mixture with cyclohexanone leads to the merging of fibres due to insufficient solvent evaporation, which results in solvent entrapment. Conversely, increasing the proportion of cyclohexanone enhances the solution conductivity, reducing the fibre diameter. At a 2 wt% solution concentration of UHMWPE, a smooth and uniform fibre can be produced using a 70:30 ratio of decalin to cyclohexanone, with a flow rate of 1 µl s^–1 and an applied voltage of 15 kV. This combination of electrospinning parameters represents the optimal conditions for generating defect-free fibres.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164482","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":"Features of high ductility low-alloying Ru-bearing molybdenum after different types of deformation","authors":"Nadezhda V Potekhina,&nbsp;Vladimir A Solntsev,&nbsp;Vladimir A Stepanov,&nbsp;Kirill A Kolomytsev,&nbsp;Eugeny G Kolesnikov","doi":"10.1007/s12034-025-03440-3","DOIUrl":"10.1007/s12034-025-03440-3","url":null,"abstract":"<div><p>In this work, several types of deformations (extrusion, one- and two-directional hot pressing) were applied to estimate the influence of regimes of deformations and annealing on characteristics of low-alloying Ru-bearing molybdenum (content of Ru is about 0.3 wt%). This study shows that a combination of extrusion and two-directional hot pressing leads to the formation of a more equiaxial microstructure of the material after annealing. The temperatures of full recrystallization of the studied alloy lie in the range of around 1300–1400°C, depending on the regime of deformation. The median values of grain size in fully recrystallized samples vary from 45 to 75 µm.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163192","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":"Tailoring water absorption and mechanical properties of cementitious composites by varying the oxidation degree of graphene","authors":"S Castro-Lopes,&nbsp;A S Carvalho,&nbsp;M V de Moura,&nbsp;S Peres,&nbsp;E Padrón-Hernández,&nbsp;H J F Diógenes,&nbsp;R A Berenguer","doi":"10.1007/s12034-025-03457-8","DOIUrl":"10.1007/s12034-025-03457-8","url":null,"abstract":"<div><p>In this study we present the synthesis and characterization of graphene oxide (GO) with distinct oxidation degrees, designated as ‘GO-1’ (less oxidized) and ‘GO-2’ (more oxidized), and their impact on water absorption and mechanical properties in cementitious composites. XRD analysis confirmed the complete oxidation phase in GO-2. Thermal analysis quantified oxygenated groups at 12% (m/m) for GO-1 and 35% (m/m) for GO-2. FTIR and Raman spectroscopy revealed heightened oxygenated group presence and increased structural disorder in GO-2, with a <i>D/G</i> intensity ratio of 1.12 for GO-2 compared to 0.98 for GO-1. SEM analysis confirmed large lamellar structures in GO-2. Incorporating GO-1 and GO-2 into cementitious composites resulted in significant changes in water absorption and mechanical properties. The composite with GO-1 reduced water absorption by 14%, while GO-2 increased it by 10%. Compressive strength for GO-1 reached 28 MPa, a 17% increase over GO-2 (24 MPa) and 3.7% higher than the control (27 MPa). Tensile strength for GO-1 was 3.0 MPa (7.1% higher than the control at 2.8 MPa), while GO-2 achieved 3.1 MPa, a 10.7% improvement over the control. Contact angle measurements further supported these trends, with GO-1 showing ~22% increase (indicating hydrophobicity) and GO-2 ~4% decrease (indicating hydrophilicity). These findings highlight the critical role of GO oxidation degree in tailoring cementitious composites for enhanced durability (reduced water absorption) or improved tensile strength, providing a pathway for optimizing material performance.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163149","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":"Pyrene-based aggregation-induced emissive chalcone pigment in water-based flexographic ink for security printing","authors":"R S Bhagya,&nbsp;Prakasha Shetty,&nbsp;Dhanya Sunil,&nbsp;Kashmitha Muthamma,&nbsp;S D Kulkarni","doi":"10.1007/s12034-025-03441-2","DOIUrl":"10.1007/s12034-025-03441-2","url":null,"abstract":"<div><p>A significant scientific interest has been generated in developing chemical compounds with unique properties as colourants in security inks. A pyrene-based chalcone: (E)-1-(6-methoxynaphthalen-2-yl)-3-(pyren-1-yl) prop-2-en-1-one (PYNP) with aggregation-induced enhanced emission was prepared in search of smart fluorescent pigments and was characterized using spectral techniques. Water-based flexographic ink with PYNP pigment was formulated, and coats/prints were obtained on security printing paper and paperboards. The coated and printed substrates exhibited greenish-yellow fluorescence on excitation beneath UV light. Moreover, PYNP is an effective fluorescent pigment for security printing applications, as indicated by colourimetric values, good lightfastness, gloss and abrasion resistance of the prints.</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 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159531","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":"Electric discharge machining parameter optimization for Nimonic C-263 using aluminium powder-infused green dielectric","authors":"PRASAN RALPH DEWAN,&nbsp;PRANAB KUMAR KUNDU","doi":"10.1007/s12034-025-03438-x","DOIUrl":"10.1007/s12034-025-03438-x","url":null,"abstract":"<div><p>One of the non-traditional techniques for processing hard and electrically conductive materials is the powder-mixed electric discharge machining, which involves no physical connection between the tool and work surface. Nimonic C-263, a nickel-based superalloy, is widely used in aerospace and automobile sectors due to its improved inherent properties such as high hardness at elevated temperatures, high creep and corrosion resistance and excellent intermediate temperature tensile ductility. This study investigates aluminium powder-mixed electric discharge machining of Nimonic C-263 while using non-toxic environment friendly dielectric, deionized water. The effects of altering parameters such as peak current (<i>I</i>_pc), pulse-on-time (<i>T</i>_on), pulse-off-time (<i>T</i>_off) and powder concentration (C) on material removal rate (MRR), tool wear rate (TWR) and average surface roughness (<i>R</i>_a) have been critically analysed. The observations show a rise in MRR with the increase in <i>I</i>_pc, <i>T</i>_on and C. <i>R</i>_a is found to increase with an elevation in <i>I</i>_pc and <i>T</i>_on while it declines with a rise in C. Process parameter optimization through grey relational analysis reveals the best parametric combination as <i>I</i>_pc = 8 A, <i>T</i>_on = 1 µs, <i>T</i>_off = 5 µs and C = 9 kg m⁻³. SEM analyses depict that the surface quality deteriorates at higher values of <i>I</i>_pc.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170670","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":"Continuous fibre-reinforced thermoplastic composites from glass/polyphenylene sulphide commingled fabric","authors":"C G Jayalakshmi,&nbsp;Naveen Alok,&nbsp;Balasubramanian Kandasubramanian,&nbsp;Anoop Anand","doi":"10.1007/s12034-025-03443-0","DOIUrl":"10.1007/s12034-025-03443-0","url":null,"abstract":"<div><p>Continuous fibre-reinforced thermoplastic composites possess excellent toughness, impact resistance and damage tolerance in comparison to their thermoset counterparts. Nevertheless, processing of thermoplastic composites is complex and expensive. In this investigation, commingled fabrics of E-glass and polyphenylene sulphide (PPS) are stacked and consolidated to produce composite laminates through an energy-efficient facile vacuum-forming technique. Laminates were fabricated and tested according to the requirements of ASTM specifications. Their void content has been evaluated, and interface morphology has been studied using field emission scanning electron microscopy. Laminates were also subjected to evaluation of tensile, flexural, compressive, interlaminar shear, in-plane shear and impact properties. Dielectric properties such as permittivity, dissipation factor and transmission loss in the 8.2–12.4 GHz frequency region have also been studied. The results are compared with data of E-glass/PPS composites that are manufactured using mainstream methods, and it is found that this technique of manufacturing thermoplastic composites is simple and energy efficient and in turn can replace thermoset composites in various sectors.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168353","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":"Crosslinking kinetics and thermal properties of epoxy composites reinforced with natural polyphenols as sustainable fillers","authors":"Hussein Ali Shnawa","doi":"10.1007/s12034-025-03428-z","DOIUrl":"10.1007/s12034-025-03428-z","url":null,"abstract":"<div><p>Due to the presence of several components in epoxy composites, monomers, crosslinking agents, fillers, reinforcements and other additives, the final properties and performance of the product depend strongly on their physicochemical properties and ratios of these components. In this work, the influence of natural polyphenolic compounds, tannins as bio-based additive on various properties of commercial epoxy resin was investigated. Tannins were isolated from the tree’s bark obtained as a byproduct from wood industries, purified, and they were utilized as sustainable fillers in epoxy composites. Different ratios of tannins (0, 5, 20 and 40 wt%) were added to the epoxy resin and hardener mixture. The curing behaviour, thermal properties and curing kinetics of tannin/epoxy composites were investigated. Also, the potential of tannins to utilization as crosslinking agent into epoxy resin were characterized by means of DSC. The results showed that the epoxy resin loaded with tannins reached 100% curing percentage and exhibited the same curing behaviour as pure epoxy resin, which is characterized by a single exothermic peak observed in the temperature range of 90–150 °C with a peak temperature of 130–140°C. An increase of 4°C was found in the glass transition temperature (<i>T</i>g) in higher tannin content (40 wt%) composite. The addition of tannins without hardener has no influence on the curing process of pure epoxy. The values of activation energy (<i>E</i>a) were in the range of 45–56 kJ mol^–1 and considered within the accepted ranges of most commercial epoxy composites. The results also showed that the tannins offer competitive advantage properties and have been considered one of the most promising materials as renewable fillers in epoxy-based composites.</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 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164881","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":"Thermoreactive benzotriazolylimides with hexamethylene bridging and terminal maleimide groups","authors":"Ivan A Farion,&nbsp;Vitalii F Burdukovskii","doi":"10.1007/s12034-025-03439-w","DOIUrl":"10.1007/s12034-025-03439-w","url":null,"abstract":"<div><p>This article is devoted to syntheses of thermoreactive benzotriazolylimide resins with the hexamethylene bridging and terminal maleimide groups and a study of their structure, as well as properties of materials based on such resins. These resins are cross-linked under the action of high temperatures into three-dimensional polymers without the release of low-molecular-weight by-products. Three-dimensional polymers of such a type are of interest from the point of view of the availability of precursor materials, the ease of the preparation of the initial thermoreactive resins in the melt and high-performance characteristics. One-step melt synthesis without the release of by-products and in the absence of organic solvents is most acceptable from the technological and environmental points of view. The structure of the resins was confirmed by the IR and NMR spectroscopy data. Model compounds were synthesized and a comprehensive study of their structure by the spectroscopic methods was carried out. This was necessary for obtaining valuable information for the synthesis of the resins and to facilitate confirmation of their chemical structure. According to thermogravimetry data, the temperatures of beginning decomposition of resins in air are 350–360°C. For compounds containing the aliphatic units, this is a fairly high indicator. This fact is explained by the formation of cross-linked polymers before the onset of thermal destruction. The long curing time of resins up to 12 h ensures that heat generated during this process has time to dissipate without causing local overheating of the material that could cause the mechanical stresses. This improves the mechanical characteristics of materials based on these resins. The resulting materials are resistant to high temperatures and acidic aggressive environments (for example, H₃PO₄). This allows them to be used as thermoreactive binders for the manufacture of high-heat-resistant adhesives, as well as structuring components of polybenzimidazole polymer matrices for the manufacture of the proton-conducting membranes for the medium-temperature fuel cells. The positive effect of introducing the benzotriazolyl fragments into the structure of the thermoreactive resins on the mechanical properties of adhesive joints between steel plates has been shown.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164494","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":"Poly(glycoluril-formaldehyde) microparticles for remediation of environmental pollutants","authors":"Karuppasamy Karpagalakshmi,&nbsp;Pavitra Rajendran,&nbsp;Sudha Sankaran,&nbsp;Ramesh Prakash,&nbsp;Lakshminarayanan Piramuthu,&nbsp;Senthilmurugan Subbiah,&nbsp;Cheng Yang,&nbsp;Narayanan Selvapalam","doi":"10.1007/s12034-025-03437-y","DOIUrl":"10.1007/s12034-025-03437-y","url":null,"abstract":"<div><p>Glycolurils are building blocks for cucurbiturils. Poly(glycoluril-formaldehyde) produced microparticles, which were synthesized for the first time by the combination of glycoluril and formaldehyde. Poly(glycoluril-formaldehyde) microparticles were characterized by SEM, XRD and FTIR. The porosity of these microparticles were examined using N₂ absorption – desorption studies, which indicated the non-porous nature of the material. However, these microparticles behaved same as cucurbiturils with respect to dye removal studies. Unlike the cucurbiturils, these microparticles were easy to prepare with no purification steps involved. Furthermore, these microparticles facilitated to remove the environmental pollutants such as dyes, hair dyes, antibiotic drug and inorganic compounds. These microparticles also aided to purify the urine samples and eliminated the RBC cells from the cow urine samples effectively.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162951","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}