Materials Chemistry and Physics最新文献_第10页

AA5083/ZrO2–SiO2 hybrid surface nanocomposite by friction stir processing, characterization of microstructure and tribological behaviour

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130491

Amritava Sarkar , P.S. Robi , A. Srinivasan

{"title":"AA5083/ZrO2–SiO2 hybrid surface nanocomposite by friction stir processing, characterization of microstructure and tribological behaviour","authors":"Amritava Sarkar , P.S. Robi , A. Srinivasan","doi":"10.1016/j.matchemphys.2025.130491","DOIUrl":"10.1016/j.matchemphys.2025.130491","url":null,"abstract":"<div><div>Friction Stir Processing (FSP) was performed to create a composite layer of ZrO<sub>2</sub> + SiO<sub>2</sub> nanoparticles on the surface of the AA5083 alloy plate under different process conditions. The FSP process was carried out by varying the tool traverse speed from 20 to 60 mm/min and a number of tool passes (1 and 2) at a constant tool rotational speed of 1200 rpm. The microstructure of the composite layer was investigated and its mechanical properties, viz, microhardness and wear behaviour were studied and compared with those of the base alloy. Investigation of microstructure revealed ZrO<sub>2</sub> + SiO<sub>2</sub> nanoparticles embedded up to an average depth of 300 μm below the top surface. Grain size refinement and increased homogeneity in reinforcement distribution were the outcomes of multi-pass FSP. A composite layer with consistent hardness was obtained via two-pass FSP. The hardness of the surface nanocomposite was found to be 33 % higher than that of the base alloy. The surface composite showed improved wear resistance. The composite layer exhibited a reduction of 46 % in the coefficient of friction and a 35 % reduction in the specific wear rate compared to the base alloy. The primary reasons for the observed increase in surface hardness and wear resistance are strengthening due to grain refinement, the presence of hard secondary phases and the quick formation of a passive layer at the surface.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130491"},"PeriodicalIF":4.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403442","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

Alloying addition-dependent bonding mechanisms in ultrasonic welding of pure Mg and AZ31 alloy to steel

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130516

Yun-Ta Chung , Zehao Li , Jhe-Yu Lin

引用次数: 0

Ultra-low doping of silver thin films with thorium: Detection beyond the limits of conventional methods 银薄膜的超低钍掺杂：超越传统方法极限的检测

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130515

Shachar Moskovich , Guy Heger , Lior Arazi , Eyal Yahel , Yuval Golan , Michael Shandalov

引用次数: 0

Sodium mesoxalate as pre-sodiation agent for sodium-ion capacitors

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130512

María Canal-Rodríguez , María Arnaiz, Silvia Martin, Bruno Correa, Devaraj Shanmukaraj, Jon Ajuria

{"title":"Sodium mesoxalate as pre-sodiation agent for sodium-ion capacitors","authors":"María Canal-Rodríguez , María Arnaiz, Silvia Martin, Bruno Correa, Devaraj Shanmukaraj, Jon Ajuria","doi":"10.1016/j.matchemphys.2025.130512","DOIUrl":"10.1016/j.matchemphys.2025.130512","url":null,"abstract":"<div><div>Sodium ion capacitors promise to serve high energy density at high power while eliminating dependence on critical raw materials such as lithium. However, several major challenges, such as the low first coulombic efficiency originated by the use of disordered carbon anodes, need to be addressed. One strategy to overcome this problem is to incorporate a pre-sodiation agent into the system to avoid depleting the ions from the electrolyte during the first cycles. Different pre-sodiation agents have been tested so far, however an ideal solution has not been developed yet. In the present study, the use of sodium mesoxalate is evaluated as it is a non-toxic, sustainable and commercially available compound. Sodium mesoxalate is incorporated in the formulation of the activated carbon positive electrode. Nonetheless, as it is not a straightforward addition, the formulation and fabrication process of the electrode is herein tailored to obtain a good dispersion of the salt alongside the electrode, ensuring its complete decomposition during the first cycles. The irreversible oxidation of the pre-sodiation agent takes place at a potential of ca. 4.3 V vs. Na<sup>+</sup>/Na within a capacity output of 331 mAh g<sup>−1</sup> when integrated in an activated carbon towards its use as positive electrode in sodium ion capacitors technology.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130512"},"PeriodicalIF":4.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulation of pore structure in SiC porous ceramics: Impact of SiC powder particle size and distribution span

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130504

Xinjian Ke , Jinhua Zhang , Qingqing Jin , Yu'e Ni , Jingran Wang , Hongdan Wu

{"title":"Modulation of pore structure in SiC porous ceramics: Impact of SiC powder particle size and distribution span","authors":"Xinjian Ke , Jinhua Zhang , Qingqing Jin , Yu'e Ni , Jingran Wang , Hongdan Wu","doi":"10.1016/j.matchemphys.2025.130504","DOIUrl":"10.1016/j.matchemphys.2025.130504","url":null,"abstract":"<div><div>According to particle packing theory, SiC porous ceramics with tailored porosity and pore dimensions can be fabricated by modifying the particle size and distribution range of SiC powder via the pressureless sintering method. The density of the green body formed under uniaxial pressure markedly diminishes with a reduction in particle packing density, while the apparent porosity of the SiC porous ceramics produced through high-temperature sintering significantly increases, resulting in a substantial enhancement of pure water flux. The increased span of SiC particle size distribution allows fine particles to efficiently occupy the interstices between larger particles, enhancing the densification of both the green and sintered bodies. Concurrently, the fine particles refine the pore size by filling larger voids; however, this results in a reduction of pure water flux. A reduction in particle size can lead to a drop in pore size of SiC porous ceramics when the particle size distribution range is comparable.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130504"},"PeriodicalIF":4.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348264","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

First-principles investigation of plane faults and thermodynamics in BCC (TiZrHf)1-xMx (M=Nb, Mo, Ta) medium entropy alloys

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130498

Heng Luo , Zixiong Ruan , Touwen Fan , Yuanyuan Zhang , Te Hu , HongGe Yan

{"title":"First-principles investigation of plane faults and thermodynamics in BCC (TiZrHf)1-xMx (M=Nb, Mo, Ta) medium entropy alloys","authors":"Heng Luo , Zixiong Ruan , Touwen Fan , Yuanyuan Zhang , Te Hu , HongGe Yan","doi":"10.1016/j.matchemphys.2025.130498","DOIUrl":"10.1016/j.matchemphys.2025.130498","url":null,"abstract":"<div><div>The newly developed BCC TiZrHf based multi-principal element alloys (MPEAs) can simultaneously guarantee high strength and good ductility. However, until now, the theoretical research on their stacking faults (SFs) and twins associated with the dislocation in plastic deformation have scarcely been studied due to their large computation amount and complexity, and thus the underlying mechanisms are still mysterious. In this work, we have investigated the effects of three types of substitution elements, namely, Nb, Mo and Ta, on the SF energy (SFE) curves of (110) plane of TiZrHf based medium entropy alloys (MEAs) along [001]ˎ [110] and [111] directions, twinning faults on (112) plane, based on the first-principles (FP) calculations in conjunction with the special quasi-random structures (SQS) method. With the increase of Nb, Ta and Mo concentrations, the unstable SFE <em>γ</em><sub>us</sub> along [001], [110] and [111] directions show a wavier increasing trend, and the effect of Mo is more pronounced. The boundary energy of the twins TS<sub>1</sub>, TS<sub>2</sub> and TS<sub>3</sub> also show the wavier increasing tendency, and they are all larger than that of pure TiZrHf alloy. We have conducted an in-depth investigation into the thermodynamic properties of TiZrHf-based alloys doped with Nb, Ta, and Mo, owing to their exceptional high-temperature performance.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130498"},"PeriodicalIF":4.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418834","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

Impact of pH variation and radical scavenger on photocatalytic dye degradation of Rhodamine B dye using LaAlO3/ZnO nanocomposites synthesize by sol gel method

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-07 DOI: 10.1016/j.matchemphys.2025.130500

Kamlesh Jangra , Anjli Sharma , Anisha Bhardwaj , Sapana Garg , Rajesh Punia , Sajjan Dahiya

{"title":"Impact of pH variation and radical scavenger on photocatalytic dye degradation of Rhodamine B dye using LaAlO3/ZnO nanocomposites synthesize by sol gel method","authors":"Kamlesh Jangra , Anjli Sharma , Anisha Bhardwaj , Sapana Garg , Rajesh Punia , Sajjan Dahiya","doi":"10.1016/j.matchemphys.2025.130500","DOIUrl":"10.1016/j.matchemphys.2025.130500","url":null,"abstract":"<div><div>A series of LAZO(LaAlO<sub>3</sub>/ZnO) nanocomposites with varying ZnO contents (1:1,1:3,1:5, and 1:7) have been effectively prepared using the Pechini sol-gel method. Structural analyses have been conducted using XRD and Rietveld refinement. The irregular shapes with porous morphology of nanocomposites captured by the FESEM and HRTEM studies and the presence of Zn, La, Al, and O elements have been confirmed by EDX spectroscopy. DRS technique corroborated bandgap values that lie in the range of 6.09–2.93 eV, while PL studies confirm a suppressed charge carrier recombination with increased concentrations of ZnO in the nanocomposite. The negative surface potential has been assessed by the Zeta analyzer, which indicates its suitability for the degradation of cationic dyes such as Rhodamine-B (RhB). The photocatalytic activity of LAZO nanocomposites in degrading RhB dye is significantly higher than that of pure ZnO and LAO under UV irradiation. Among the samples, LAZO (1:5) has the highest efficiency (∼97 %) in degrading RhB dye within 100 min. The effect of pH on the reaction medium and the role of reactive oxygen species were also examined. In the neutral medium, almost complete degradation of dye is achieved in 100 min. Radical trap experiments reveal that holes are the main oxidative species part in the degradation of RhB dye. The adsorption kinetic are best described by Pseudo second order kinetic model. Type I heterojunction charge transfer mechanism well explains the degradation pathway of RhB dye. The development of nanocomposite photocatalysts that facilitate efficient charge transfer mechanisms is a promising strategy for improving photocatalytic activity and removing organic contaminants from water sources.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130500"},"PeriodicalIF":4.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143293585","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

The static magnetic properties of composites with orientational anisotropy: Experiment, theory and computer simulation

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-06 DOI: 10.1016/j.matchemphys.2025.130469

Dmitry I. Radushnov , Andrey V. Chernyshov , Anna Yu. Solovyova , Stanislav A. Kunikin , Arthur R. Zakinyan , Ekaterina A. Elfimova

{"title":"The static magnetic properties of composites with orientational anisotropy: Experiment, theory and computer simulation","authors":"Dmitry I. Radushnov , Andrey V. Chernyshov , Anna Yu. Solovyova , Stanislav A. Kunikin , Arthur R. Zakinyan , Ekaterina A. Elfimova","doi":"10.1016/j.matchemphys.2025.130469","DOIUrl":"10.1016/j.matchemphys.2025.130469","url":null,"abstract":"<div><div>The properties and behavior of composite materials based on superparamagnetic nanoparticles with an ordered orientational structure of magnetic anisotropy axes are of scientific and applied interest. At present, there is no clear picture of the physical properties of such materials. This paper presents a comprehensive study of the problems of the formation and properties of magneto-textured materials. The study provides a comparative analysis of the obtained empirical material with computer simulation data and results from a developed theoretical model. In particular, the dependence of the composite material’s static magnetic properties on the values of the magnetic field in which the sample was hardened and the measuring magnetic field, as well as on the angle between the directions of these fields, is demonstrated. The correlation of these material properties with the microstructural state, specifically with the orientational distribution of the magnetic anisotropy axes of the nanoparticles, is shown. The material’s equilibrium orientational texture as a function of its preparation conditions is described. The role of different size fractions of nanoparticles and their contribution to the resulting material behavior is demonstrated. The results of the study make it possible to form a complete picture of the phenomena under consideration, as well as to determine the optimal synthesis conditions and to predict the ways of obtaining magneto-textured materials with desired properties.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130469"},"PeriodicalIF":4.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372410","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

Two novel Ti–Mo–Ta–Zr alloys for medical devices: Their microstructure, corrosion resistance and microhardness characteristics

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-06 DOI: 10.1016/j.matchemphys.2025.130511

Cristina Jiménez-Marcos , Julia Claudia Mirza-Rosca , Madalina Simona Baltatu , Petrica Vizureanu

{"title":"Two novel Ti–Mo–Ta–Zr alloys for medical devices: Their microstructure, corrosion resistance and microhardness characteristics","authors":"Cristina Jiménez-Marcos , Julia Claudia Mirza-Rosca , Madalina Simona Baltatu , Petrica Vizureanu","doi":"10.1016/j.matchemphys.2025.130511","DOIUrl":"10.1016/j.matchemphys.2025.130511","url":null,"abstract":"<div><div>Titanium alloys have gained a solid reputation in the field of biomedicine due to their exceptional biocompatibility. However, it is important to note that some of these alloys do release toxic ions, which could potentially limit their application in sensitive scenarios. This study examines two new titanium alloys, TixMo15Ta7Zr (x = 15, 20 wt%) and it designed these alloys to overcome certain challenges by including helpful elements like molybdenum (Mo), tantalum (Ta) and zirconium (Zr). Advanced metallography, scanning electron microscopy, X-ray diffraction, microhardness measurements and electrochemical testing conclusively showed that the importantly elevated Mo content substantially improves corrosion resistance (with a corrosion rate value of 0.64 μm year<sup>−1</sup>) by promoting the formation of an importantly more flexible passive layer, while simultaneously maintaining mechanical properties closely comparable to those of conventional titanium biomaterials possessing Vickers hardness values around 350 HV. These findings show that an important number of these alloys represent a revolutionary, promising solution for biomedical implants that are safer as well as more durable.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"334 ","pages":"Article 130511"},"PeriodicalIF":4.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of different reducing agents for the synthesis of mayenite electride C12A7:2e− and a new photometric method to determine its electron density

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-02-06 DOI: 10.1016/j.matchemphys.2025.130513

Nils L. Kotschote, Stefan G. Ebbinghaus

{"title":"Comparison of different reducing agents for the synthesis of mayenite electride C12A7:2e− and a new photometric method to determine its electron density","authors":"Nils L. Kotschote, Stefan G. Ebbinghaus","doi":"10.1016/j.matchemphys.2025.130513","DOIUrl":"10.1016/j.matchemphys.2025.130513","url":null,"abstract":"<div><div>Discovered in 2003 the mayenite electride (Ca<sub>12</sub>Al<sub>14</sub>O<sub>33–x</sub>(2e<sup>–</sup>)<sub>x</sub>) is the first electride being stable under ambient conditions. Different reaction conditions are known to result in samples with strongly deviating electron contents x. Various methods for determining x have been applied but have individual disadvantages. Therefore, a new alternative approach based on the reduction of dichromate and its photometric quantification is introduced and evaluated in this paper. For this, mayenite oxide was synthesised via classical solid-state synthesis and afterwards reduced by heating pellets embedded in the respective reducing agents under dynamic vacuum. Using carbon, titanium and zirconium as oxygen getters, different degrees of reduction were achieved. The electron densities of the obtained electrides were determined using iodometric titration, conductivity measurements and the new dichromate based photometry. Our results show that the latter method is feasible, robust and leads to well-reproducible, reliable values.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"335 ","pages":"Article 130513"},"PeriodicalIF":4.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0