Materials Chemistry and Physics最新文献_第2页

Electrochemical detection of creatinine in artificial saliva using nanostructured CuZn bimetallic materials 纳米结构CuZn双金属材料电化学检测人工唾液中肌酐

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-29 DOI: 10.1016/j.matchemphys.2025.131619

Katherine Montoya-Cano , Mayra Luna-Trujillo , Carlos M. Ramos-Castillo , Lorena Álvarez‒Contreras , Minerva Guerra‒Balcázar , Noé Arjona

{"title":"Electrochemical detection of creatinine in artificial saliva using nanostructured CuZn bimetallic materials","authors":"Katherine Montoya-Cano , Mayra Luna-Trujillo , Carlos M. Ramos-Castillo , Lorena Álvarez‒Contreras , Minerva Guerra‒Balcázar , Noé Arjona","doi":"10.1016/j.matchemphys.2025.131619","DOIUrl":"10.1016/j.matchemphys.2025.131619","url":null,"abstract":"<div><div>In this study, Zn was incorporated as a protective and sacrificial co-metal alongside Cu, the electroactive metal, to form electrodeposited CuZn materials for creatinine detection. Four Cu-to-Zn ratios (1:2, 1:4, 1:8 and 1:12) were prepared using ethylenediamine-tetraacetic acid (EDTA) as an additive. Physicochemical characterization revealed Zn atomic contests of 43 %, and 30 % for the 1:2 and 1:12 ratios, respectively, while the 1:4 and 1:8 ratios yielded lower Zn contents of 13 % and 3 %. Electrochemical evaluation demonstrated improved creatinine detection performance (in activity and repeatability) at the lower Zn concentrations, with the 1:4 CuZn composition (87 % Cu, 13 % Zn) showing the best results. This optimal composition exhibited a linear response for creatinine detection in the range of 0–500 μM in a 0.1 M phosphate buffer solution (PBS) containing 20 mM NaCl and 2 mM KCl, with a correlation coefficient (R<sup>2</sup>) of 0.99. Linearity was maintained in artificial saliva diluted 1:5 in PBS (R<sup>2</sup> = 0.98), although repeatability was reduced. To address this, a micro-environment was established using screen-printed electrodes (SPEs), enhancing repeatability while preserving linearity (R<sup>2</sup> = 0.98) within a 0–200 μM range. These findings highlight that low dilution rates (1:5) can be effectively used for creatinine detection when Zn is employed as a co-metal. Zn not only protects Cu but also facilitates the formation of Cu<sup>+</sup> species, supporting a dual detection mechanism involving both Cu<sup>+</sup>– and Cu<sup>2+</sup>–creatinine complexes.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131619"},"PeriodicalIF":4.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221449","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

Structure–property–biocompatibility interplay in heat-treated WE43 magnesium alloy 热处理WE43镁合金的结构-性能-生物相容性相互作用

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-29 DOI: 10.1016/j.matchemphys.2025.131623

Vighnesh Raj , Sabarinath S , R Vaira Vignesh , Vinod VT. Padil

{"title":"Structure–property–biocompatibility interplay in heat-treated WE43 magnesium alloy","authors":"Vighnesh Raj , Sabarinath S , R Vaira Vignesh , Vinod VT. Padil","doi":"10.1016/j.matchemphys.2025.131623","DOIUrl":"10.1016/j.matchemphys.2025.131623","url":null,"abstract":"<div><div>The WE43 magnesium alloy, composed of magnesium, yttrium, neodymium, and zirconium, has gained significant attention for biomedical applications on account of its favourable mechanical properties, biodegradability, and biocompatibility. However, its practical utility is hindered by rapid corrosion rates and wear susceptibility. This study systematically examines the microstructural features, mechanical properties, tribological behaviour, corrosion resistance, and cytotoxicity of WE43 in both as-cast (AC) and heat treated (HT) conditions.</div><div>In the current work, EBSD/KAM mapping revealed that heat treatment induced grain coarsening, increased high-angle grain boundaries (48 % vs. 10.6 % in AC), and reduced dislocation density, thereby improving crystalline quality. Tensile and hardness tests confirmed strength and hardness enhancements in the HT alloy (UTS: 189.6 MPa; hardness: 93 HV), but with reduced ductility. Tribological characterization demonstrated load- and velocity-dependent wear transitions, while hybrid predictive modelling captured wear behaviour with high accuracy (R<sup>2</sup> = 0.97). Electrochemical and immersion tests showed that HT specimens exhibited superior corrosion resistance (0.84 mm/year vs. 1.16 mm/year in AC), attributed to dissolution and redistribution of Mg-RE phases, leading to stable protective film formation. Cytotoxicity testing confirmed excellent biocompatibility, with cell viability consistently above 98 %.</div><div>Unlike prior works that mainly emphasize advanced manufacturing or surface modifications, this study establishes a comprehensive structure–property–biocompatibility framework for conventionally processed WE43. By integrating microstructural, mechanical, tribological, corrosion, and cytotoxicity analyses, it provides critical baseline insights and highlights the role of heat treatment in enhancing corrosion resistance, thereby offering a valuable benchmark for the future design of biodegradable magnesium implants.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131623"},"PeriodicalIF":4.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227420","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

Chemical vapor deposition of graphene on liquid Sn–In binary Alloys: Substrate influence and growth behaviour 石墨烯在液态Sn-In二元合金上的化学气相沉积：衬底影响和生长行为

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-29 DOI: 10.1016/j.matchemphys.2025.131624

Maryam A. Saeed , Abdullah Alkandary , Mariam AlSaidi , Eissa Al-Nasrallah , Mohammed Banyan , Fahad Al-Ajmi

{"title":"Chemical vapor deposition of graphene on liquid Sn–In binary Alloys: Substrate influence and growth behaviour","authors":"Maryam A. Saeed , Abdullah Alkandary , Mariam AlSaidi , Eissa Al-Nasrallah , Mohammed Banyan , Fahad Al-Ajmi","doi":"10.1016/j.matchemphys.2025.131624","DOIUrl":"10.1016/j.matchemphys.2025.131624","url":null,"abstract":"<div><div>The growth of graphene via chemical vapor deposition (CVD) on liquid substrates has strong potential for producing high-quality films due to the absence of grain boundaries and the atomically flat surface of the liquid phase. In this study, graphene growth was investigated on liquid Sn, In, and Sn–In binary alloys (Sn<sub>x</sub>–In, x = 20, 50, 80 wt%) under varied growth parameters. The influence of residence time (RT) and methane/hydrogen ratio (R) was systematically evaluated in terms of layer number, defect density, and coverage. Within the experimental window, the optimum growth was obtained at RT = 6.8 s and R = 0.1, which produced thinner films with lower defect density and enhanced crystallinity, as supported by statistical Raman analysis. Energy-dispersive spectroscopy (EDS) and X-ray diffraction (XRD) confirmed alloy stability at growth temperature, showing uniform elemental distribution for Sn<sub>20</sub>In<sub>80</sub> and Sn<sub>80</sub>In<sub>20</sub>, while Sn<sub>50</sub>In<sub>50</sub> exhibited localized segregation. Despite this, Raman and XPS confirmed that Sn<sub>50</sub>In<sub>50</sub> yielded graphene with the lowest defect density, highlighting its catalytic balance compared with pure metals and other alloy compositions. Growth time studies identified 5 min as the optimum duration. This study underscores the critical role of alloy composition and gas flow dynamics in tailoring graphene quality and highlights the promise of low melting point binary alloys as tunable platforms for scalable, high quality graphene growth.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131624"},"PeriodicalIF":4.7,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227297","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

Maximizing electrochemical energy conversion and storage performance of carbon aerogel with Co-Fe by tuning the synthesis method 通过调整合成方法，使Co-Fe碳气凝胶的电化学能量转换和存储性能最大化

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-27 DOI: 10.1016/j.matchemphys.2025.131614

Kristina Radinović , Meryem Samancı , Ayşe Bayrakçeken , Danica Bajuk-Bogdanović , Nemanja Gavrilov , Diogo M.F. Santos , Biljana Šljukić

{"title":"Maximizing electrochemical energy conversion and storage performance of carbon aerogel with Co-Fe by tuning the synthesis method","authors":"Kristina Radinović , Meryem Samancı , Ayşe Bayrakçeken , Danica Bajuk-Bogdanović , Nemanja Gavrilov , Diogo M.F. Santos , Biljana Šljukić","doi":"10.1016/j.matchemphys.2025.131614","DOIUrl":"10.1016/j.matchemphys.2025.131614","url":null,"abstract":"<div><div>The synthesis and application of cobalt-iron nanoparticles supported on 3D carbon aerogel are studied, with the expectation of improved performance in electrochemical energy conversion and storage systems. The structural and catalytic properties of the catalysts were optimized by applying the microwave irradiation method in both one-step and two-step manners. The synthesized catalysts were physically characterized using inductively coupled plasma-mass spectrometry, X-ray diffraction analysis, transmission electron microscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy to evaluate their metal loading ratios, crystallinity, morphology, textural properties, and surface chemistry. The results demonstrate that the synthesis method has a significant impact on the structural and catalytic properties of the materials, providing valuable insights into the design of advanced materials for sustainable energy applications. Among the synthesis methods employed, the one-step synthesis yielded material with improved electrochemical performance, achieving a specific capacitance of 644 F g<sup>−1</sup> at 5 mV s<sup>−1</sup> in 3 M KOH that further increased during continuous cycling. Co-Fe/CA-2 showed half that value, but still a promising result of 328 F g<sup>−1</sup>. Dunn's analysis revealed that the studied materials store charge predominantly via a pseudo-faradaic mechanism. Galvanostatic charge/discharge cycling with Co-Fe/CA-1 was done both in two- and three-electrode set up with Faradaic efficiency as high as 93.8 % at 10 mA g<sup>−1</sup>. The oxygen reduction reaction, essential for the operation of fuel cells and metal-air batteries, was observed to proceed predominantly via a favorable 4-electron mechanism at Co-Fe/CA-1, whereas Co-Fe/CA-2 exhibited mixed kinetics in 1 M KOH.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131614"},"PeriodicalIF":4.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227294","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

1D vertically aligned NiCo2O4 nanoneedles anchored on Ni foam as a novel positive electrode for high energy density asymmetric supercapacitors 固定在Ni泡沫上的一维垂直排列NiCo2O4纳米针作为高能量密度非对称超级电容器的新型正极

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-26 DOI: 10.1016/j.matchemphys.2025.131615

Palash Chandra Maity , Monojit Mondal , Sourav Karmakar , Sourish Haldar , Rinky Sha , Tarun Kanti Bhattacharyya , Indranil Lahiri

{"title":"1D vertically aligned NiCo2O4 nanoneedles anchored on Ni foam as a novel positive electrode for high energy density asymmetric supercapacitors","authors":"Palash Chandra Maity , Monojit Mondal , Sourav Karmakar , Sourish Haldar , Rinky Sha , Tarun Kanti Bhattacharyya , Indranil Lahiri","doi":"10.1016/j.matchemphys.2025.131615","DOIUrl":"10.1016/j.matchemphys.2025.131615","url":null,"abstract":"<div><div>One of the ongoing challenges is the fabrication of energy storage devices with high power and energy densities. This work addresses it by presenting for the first time a new hydrothermal method for synthesizing nickel cobalt oxide (NiCo<sub>2</sub>O<sub>4</sub>), and using it as an electro-active material for better power and energy densities in supercapacitors. While the XPS, BET and XRD data further validate its successful growth with large specific surface area of 46.13 m<sup>2</sup>/g, the FESEM and TEM micrographs show micro-flower like morphologies of the NiCo<sub>2</sub>O<sub>4</sub> nanostructures comprising of large numbers of intertwined, vertically aligned 1D nanoneedles. At a current density of 0.3 A. g<sup>−1</sup>, the NiCo<sub>2</sub>O<sub>4</sub>-based electrode has a remarkable a specific capacitance of 992.3 F. g<sup>−1</sup> along with a capacitive retention of 72 % after 5,000 cycles. An asymmetric supercapacitor (ASC) has also been constructed with the 1D vertically aligned NiCo<sub>2</sub>O<sub>4</sub> nanoneedles anchored on Ni foam as the positive electrode, the activated porous carbon made from bio-waste as the negative electrode, PVA-KOH gel served as the electrolyte, while polyethylene terephthalate (PET) acts as the separator. The ASC fabricated with this material has been tested and returned a high energy density of 177.1 Wh. kg<sup>−1</sup> and power density of 433.3 W. kg<sup>−1</sup> at discharging current density of 0.33 A g<sup>−1</sup>. Consequently, our work lays the groundwork for the preparation of an electrode material based on binary metal-oxide that has a very large capacity and high energy-power densities for use in future energy storage systems.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131615"},"PeriodicalIF":4.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227164","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

Influence of nickel-based interlayers on mechanical, corrosion, and thermal fatigue performance of functionally graded weld joints between P91 steel and SS304 镍基夹层对P91钢与SS304功能梯度焊接接头力学、腐蚀和热疲劳性能的影响

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-25 DOI: 10.1016/j.matchemphys.2025.131602

Rajat Malik, Dheerendra Kumar Dwivedi

{"title":"Influence of nickel-based interlayers on mechanical, corrosion, and thermal fatigue performance of functionally graded weld joints between P91 steel and SS304","authors":"Rajat Malik, Dheerendra Kumar Dwivedi","doi":"10.1016/j.matchemphys.2025.131602","DOIUrl":"10.1016/j.matchemphys.2025.131602","url":null,"abstract":"<div><div>This study introduces a novel methodology for fabricating functionally graded weld joints (FGWJ). This method employs the activated gas tungsten arc welding process (A-TIG), incorporating nickel-based interlayers. This study aims to enhance the weld joints' mechanical integrity, corrosion resistance, and thermal stability. FGWJs address key challenges like uneven thermal expansion, accelerated degradation at high temperatures, and high corrosion rate at the weld joint between P91 and SS304. The distinct transition zones of FGWJ ensure smooth property gradation, enhancing toughness, thermal fatigue life and electrochemical stability. The dilution of nickel-based interlayers yielded a predominantly austenitic microstructure across all three fusion zones, with trace amounts of δ-ferrite confined to FZ II. This led to a gradual increase in both impact toughness (FZ I: 40.5 J, FZ II: 46 J, FZ III: 59 J) and corrosion resistance (FZ I: 0.75 mpy, FZ II: 0.55 mpy, FZ III: 0.15 mpy), without compromising tensile strength (550 MPa, 84.6 % joint efficiency, 35 % elongation). Furthermore, this microstructural transformation achieved a 110 % improvement in thermal fatigue life compared to the direct joining of a conventional P91–SS304 weld without any filler metal. Ni-based interlayers in FGWJs improve the mechanical properties, thermal fatigue life and corrosion resistance of dissimilar steel welds for power generation and chemical industry applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131602"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227301","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

Exploring the effect of hydrostatic pressure on the physical properties of non-toxic Na3OX (X = Cl, I) anti-perovskites for optoelectronic applications 探讨静水压力对无毒Na3OX （X = Cl， I）抗钙钛矿光电子材料物理性能的影响

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-25 DOI: 10.1016/j.matchemphys.2025.131612

Md Tanvir Hossain , Syda Wasy Yelmai , Fatema-Tuz- Zahra , Md Mehidi Hasan , Jehan Y. Al-Humaidi , Md Rasidul Islam

{"title":"Exploring the effect of hydrostatic pressure on the physical properties of non-toxic Na3OX (X = Cl, I) anti-perovskites for optoelectronic applications","authors":"Md Tanvir Hossain , Syda Wasy Yelmai , Fatema-Tuz- Zahra , Md Mehidi Hasan , Jehan Y. Al-Humaidi , Md Rasidul Islam","doi":"10.1016/j.matchemphys.2025.131612","DOIUrl":"10.1016/j.matchemphys.2025.131612","url":null,"abstract":"<div><div>The toxicity and instability of lead compounds have made it crucial to find stable, eco-friendly substitutes for lead-based halide perovskites. In this work, we employed first-principles density functional theory (DFT) computations to examine the structural, electrical, optical, mechanical, and thermal properties of non-toxic Na<sub>3</sub>OX (X = Cl, I) anti-perovskites under a range of hydrostatic pressures from 0 to 500 GPa. The stability of these compounds is confirmed by our structural results, which agree with earlier theoretical investigations. Both Na<sub>3</sub>OCl and Na<sub>3</sub>OI have relatively broad bandgaps, which are much diminished when hydrostatic pressure rises. This makes them suitable for usage in solar energy and semiconductor applications. These materials are promising candidates for optoelectronic devices such as UV detectors, waveguides, solar cell anti-reflection coatings, organic light-emitting diodes (OLEDs), and quantum dot light-emitting diodes (QLEDs) because the application of pressure results in improved optical behavior, such as increased static dielectric constants, extended absorption in the ultraviolet range, and decreased visible reflectance. Anisotropic nature, strong thermal stability, and a change from brittle to ductile behavior at high pressure are all revealed by mechanical analysis. Their suitability for use in robust device environments is further supported by the improvement in ductility and elastic characteristics under compression. All things considered, the tunability and multifunctional potential of Na<sub>3</sub>OCl and Na<sub>3</sub>OI anti-perovskites are demonstrated in this thorough investigation, providing important information for further study and advancement in pressure-engineered optoelectronic and energy materials.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131612"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155563","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

Surface modification of high-speed steels for enhancing hot hardness and high-temperature wear resistance via friction stir processing 通过搅拌摩擦处理对高速钢进行表面改性以提高热硬度和高温耐磨性

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-25 DOI: 10.1016/j.matchemphys.2025.131603

Xiaomi Chen , Quan Liu , Kun Liu , Jing Kong , Valentino A.M. Cristino , Kin Ho Lo , Chi Tat Kwok

{"title":"Surface modification of high-speed steels for enhancing hot hardness and high-temperature wear resistance via friction stir processing","authors":"Xiaomi Chen , Quan Liu , Kun Liu , Jing Kong , Valentino A.M. Cristino , Kin Ho Lo , Chi Tat Kwok","doi":"10.1016/j.matchemphys.2025.131603","DOIUrl":"10.1016/j.matchemphys.2025.131603","url":null,"abstract":"<div><div>In this work, friction stir processing (FSP) was proven to be an effective method for enhancing hot hardness and high-temperature wear resistance of the surface of M35 and M42 high-speed steels (HSSs). The microstructure of the FSPed HSSs contains martensitic matrix (α′) with the fine fragmented carbides (M<sub>2</sub>C, M<sub>6</sub>C, MC and M<sub>7</sub>C<sub>3</sub>) in stir zone (SZ). Compared to the quenched and tempered (QT) HSSs, FSPed M35 and M42 exhibited higher hardness (883.4 ± 4.9 HV<sub>0.2</sub> and 970.5 ± 3.0 HV<sub>0.2</sub> respectively) at 25 °C due to the increased martensite content and more refined and evenly distributed carbides. As the temperature increases, the hot hardness of both QT and FSPed HSSs decreases. Compared to the QT HSSs, the superior high-temperature wear resistance of the FSPed HSSs is attributed to the hard martensite, refined carbides and high hot hardness. The wear rate of the FSPed HSSs increases with the temperature, reaching its highest at 400 °C due to the softening effect and abrasive wear (as the P–B ratio of most oxides exceeds 2). The wear rate then decreases at 600 °C because of the presence of the thickest oxide glaze on the surface. Additionally, the high-temperature wear resistance the FSPed M35 is greater than that of the FSPed M42, due to the higher hot hardness, more oxides with P–B ratio between 1 and 2 and a thicker oxide layer. Thus, FSP is more effective than the traditional heat treatment in enhancing the hot hardness and high-temperature wear resistance of the HSSs.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131603"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227293","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

Formation of hierarchical micro/nanostructures of Ag/sodium titanate on grade 2 titanium via hybrid laser/hydrothermal processing 激光/水热复合工艺在2级钛上形成银/钛酸钠微纳米结构

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-24 DOI: 10.1016/j.matchemphys.2025.131611

Jaber Asadi , Seyyed Alireza Hosseini , Madjid Momeni-Moghaddam

{"title":"Formation of hierarchical micro/nanostructures of Ag/sodium titanate on grade 2 titanium via hybrid laser/hydrothermal processing","authors":"Jaber Asadi , Seyyed Alireza Hosseini , Madjid Momeni-Moghaddam","doi":"10.1016/j.matchemphys.2025.131611","DOIUrl":"10.1016/j.matchemphys.2025.131611","url":null,"abstract":"<div><div>Nowadays, titanium implants with multi-scale surface geometries exhibiting biomimetic and antibacterial properties have garnered significant attention due to their potential to enhance osteoconduction and osseointegration. Although titanium is inherently bioinert, surface modification has transformed it into one of the most biocompatible materials for implants. This study aimed to create and characterize a multi-scale geometric surface on grade 2 titanium samples, simultaneously alloyed with silver, using a hybrid laser/hydrothermal process. The effects of laser parameters on surface morphology, roughness, and wettability were evaluated for both surface-alloyed and unalloyed samples. The results showed that laser treatment created regular micrometer-scale structures with controllable silver incorporation. Subsequent hydrothermal treatment further modified the surface by forming a nanoscale Ag/sodium titanate structure on the laser-induced micro-roughness, significantly enhancing wetting behavior and resulting in a superhydrophilic surface. Moreover, increasing the laser groove line spacing altered the surface micro/nanostructure morphology, leading to the formation of a silkworm-like titanate structure. Additionally, the S<sub>q</sub> and S<sub>a</sub> roughness parameters decreased with increasing laser groove line spacing, while S<sub>sk</sub> < 0 and S<sub>ku</sub> < 3 values were obtained, potentially contributing to long-term surface wettability.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131611"},"PeriodicalIF":4.7,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227292","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

Incorporation effect of Ag-cobalt ferrite nanoparticles dopped 5 wt% graphene on structural, magnetic properties, antimicrobial, and anticancer activity assessment 掺杂5%石墨烯的银钴铁氧体纳米颗粒对结构、磁性、抗菌和抗癌活性的影响

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-09-23 DOI: 10.1016/j.matchemphys.2025.131609

Mohamed A.M. Ali , M.H. Ghozza , Anis Ahmad Chaudhary , Fehmi Boufahja , Salma Hegazi , Heba Y. Zahran , Elbadawy A. Kamoun , Amr Negm , Ibrahim S. Yahia

{"title":"Incorporation effect of Ag-cobalt ferrite nanoparticles dopped 5 wt% graphene on structural, magnetic properties, antimicrobial, and anticancer activity assessment","authors":"Mohamed A.M. Ali , M.H. Ghozza , Anis Ahmad Chaudhary , Fehmi Boufahja , Salma Hegazi , Heba Y. Zahran , Elbadawy A. Kamoun , Amr Negm , Ibrahim S. Yahia","doi":"10.1016/j.matchemphys.2025.131609","DOIUrl":"10.1016/j.matchemphys.2025.131609","url":null,"abstract":"<div><div>Silver cobalt strontium ferrite nanoparticles Ag<sub>x</sub>Co<sub>0.5-x</sub>Sr<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>/5 %G (x = 0, 0.01, 0.05, 0.1, 0.25, 0.5) with 5 % graphene nanocomposite were prepared by sol-gel method. Effective instrumental measurements, e.g., XRD, Raman spectroscopy, HR-TEM, FE-SEM, and VSM, were applied to describe the fabricated nanomaterials. All samples were shown to be cubic crystalline structures with space group Fd3m, with crystallite size range ∼ (45–68 nm). Magnetically, all samples offered ferromagnetic behavior through investigation using VSM analysis. The antimicrobial activity of fabricated Ag-doped CoSrFe<sub>2</sub>O<sub>4</sub>/5 %G nanocomposite was assessed. Furthermore, variations in cell viability, morphology, protein breakdown, and oxidative stress were used to assess the toxicity of NCs. The oxidative stress in Ag-doped CoSrFe<sub>2</sub>O<sub>4</sub>/5 %G NCs is also demonstrated by the build-up of reactive oxygen species (ROS) and glutathione exhaustion. Interestingly, Ag-doped CoSrFe<sub>2</sub>O<sub>4</sub>/5 %G nanocomposite caused oxidative stress and ROS aging to cause cell death for <em>E. coli</em>. The effectiveness of synthetic silver nanoparticles versus <em>E. Coli</em> and <em>S. aureus</em> and their capacity to maintain cell viability and exhibit anticancer activity versus lung cancer cell line (A549). Furthermore, the synergistic and significant impact of both cobalt and silver in NCs was noticed against the malignant cell line A549.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"348 ","pages":"Article 131609"},"PeriodicalIF":4.7,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155462","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}

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