Bulletin of Materials Science最新文献_第10页

An investigation of structural, magnetic and electrical properties of Ca dominant A-site tungsten bronze ferroelectric ceramic Ca 主导 A 位钨青铜铁电陶瓷的结构、磁性和电性研究

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-27 DOI: 10.1007/s12034-024-03280-7

Shristi Chaudhary, Sheela Devi, Shilpi Jindal

引用次数: 0

Fabrication of Ag injection in Bi2S3 (AgBiS2) thin films for photoelectrochemical cell applications 制作用于光电化学电池应用的 Bi2S3（AgBiS2）薄膜中的注入银

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-23 DOI: 10.1007/s12034-024-03290-5

T Daniel, V Balasubramanian, Antony Lilly Grace, K Mohanraj

{"title":"Fabrication of Ag injection in Bi2S3 (AgBiS2) thin films for photoelectrochemical cell applications","authors":"T Daniel, V Balasubramanian, Antony Lilly Grace, K Mohanraj","doi":"10.1007/s12034-024-03290-5","DOIUrl":"10.1007/s12034-024-03290-5","url":null,"abstract":"<div>The present investigation deals with the detailed analysis of opto-structural, morphological, electrical properties and photoelectrochemical cell performances of thermally evaporated AgxBi2−xS3−y thin film prepared for various x and y values (x = y = 0, 0.25, 0.50, 0.75 and 1). The cubic-structured AgBiS2 along with orthorhombic-structured Bi2S3 as confirmed from X-ray diffraction (XRD) analysis. The AgxBi2−xS3−y (x = y = 0–1) films showed higher optical absorption coefficient (105 cm−1) in the visible region and band gap values were found to be decreased from 2.08 to 1.35 eV. Scanning electron microscope (SEM) images have visualized the uniform distribution of spherical particles. Carrier concentration of the films are better than x = y = 0 as observed from Mott–Schottky plots. The FTO/AgxBi2−xS3−y (x = y = 1) photoelectrochemical cell yields the photoconversion efficiency (PCE) of 7.03%.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208467","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}

引用次数: 0

Mechanism of shear-thickening fluid and factors influencing its rheological properties: a review 剪切增稠流体的机理及其流变特性的影响因素：综述

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-23 DOI: 10.1007/s12034-024-03313-1

Aoping You, Yunfeng Pan, Minghai Wei

引用次数: 0

Tribological behaviour of high-carbon carbide-free nanostructured bainitic steel 高碳无碳化物纳米结构贝氏体钢的摩擦学特性

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-22 DOI: 10.1007/s12034-024-03282-5

Sandeep Kumar Gupta, R Manna, Kausik Chattopadhyay

{"title":"Tribological behaviour of high-carbon carbide-free nanostructured bainitic steel","authors":"Sandeep Kumar Gupta, R Manna, Kausik Chattopadhyay","doi":"10.1007/s12034-024-03282-5","DOIUrl":"10.1007/s12034-024-03282-5","url":null,"abstract":"<div>This research focuses on the development of carbide-free nanostructured bainitic steel through the process of austempering at 250°C. The selected steels are also patented at 550°C, to get fine pearlitic structure. In austempered steels, microscopic analyses encompassing optical, scanning, transmission electron microscopy and X-ray diffraction revealed the presence of nanoscale bainite, filmy and blocky austenite. In contrast, lamellar pearlite was observed in the patented steels. With increase in the austempering duration, the extent of bainite improved, while the volume percentage of blocky retained austenite (RA) decreased. The tribological performance of high-carbon bainitic steels is compared with patented one of same composition against a tungsten-carbide counter disc. The specific wear rate as well as coefficient of friction decreases with rise in load from 10 to 50 N. The hardening volume of B15VA-1 sample is greater than that of B15VA-2 and P15VA, and it is mainly due to the transformation of blocky RA to strain-induced martensite. The bainitic pins with higher hardness exhibited superior tribological response than the pearlitic ones. SEM analysis of worn surfaces confirmed that at lower load (10 N), abrasive wear occurs, but at higher load (50 N), wear mechanism changes to adhesive along with abrasive in bainitic steel and oxidative wear along with adhesive and abrasive wear in pearlitic steel.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208470","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}

引用次数: 0

Hydrogen gas sensor based on NiO decorated macroporous silicon heterojunction 基于氧化镍装饰大孔硅异质结的氢气传感器

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-22 DOI: 10.1007/s12034-024-03305-1

K M’hammedi, L Talbi, M Berouaken, A Manseri, N Gabouze

引用次数: 0

Radiation effects in phosphate-based matrices for back-end nuclear applications 用于后端核应用的磷酸盐基质中的辐射效应

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-21 DOI: 10.1007/s12034-024-03281-6

RUMU H BANERJEE, NISHANT CHAUDHARY, NAINA RAJE, PRANESH SENGUPTA

{"title":"Radiation effects in phosphate-based matrices for back-end nuclear applications","authors":"RUMU H BANERJEE, NISHANT CHAUDHARY, NAINA RAJE, PRANESH SENGUPTA","doi":"10.1007/s12034-024-03281-6","DOIUrl":"10.1007/s12034-024-03281-6","url":null,"abstract":"<div>MgKPO4·6H2O (magnesium potassium phosphate-based cement; MKP) is an environment friendly alternative to Portland cement with potential applications in environmental remediation and radioactive nuclear waste management, particularly in the context of β-emitting Cs and Sr immobilizations. Thus, investigation of the radiation effects and temperature due to decay heat in such material is of prime importance. In this study, MgKPO4·6H2O powders were synthesized and subsequently annealed at 1273 K for 2 h under ambient atmosphere to form MgKPO4. The synthesized and annealed MKP specimens were irradiated under ambient conditions with 10-MeV electron beam up to imparted doses of 20 MGy. XRD results reveal the formation of amorphous fraction in irradiated MgKPO4·6H2O, while the annealed MKP specimens exhibit good radiation stability without amorphization. The annealed specimens also indicated good thermal stability when compared to as-prepared MgKPO4·6H2O specimen both in pristine and irradiated conditions. Vibrational spectroscopic results confirm that the radiation effect resulted in distortion/removal of structural water and formation of radiolysis products in MgKPO4·6H2O.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208483","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}

引用次数: 0

Interfacial behaviour of benzoylated cellulose of different wettability from melon and moringa pod waste 甜瓜和豆荚废料中不同润湿性的苯甲酰化纤维素的界面行为

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-21 DOI: 10.1007/s12034-024-03306-0

Samuel O Olusanya, Alex E Didunyemi, Sunday M Ajayi, Michael O Atunde, Sunday F Abimbade, Dele P Fapojuwo, Emmanuel G Olumayede, Olayide S Lawal

{"title":"Interfacial behaviour of benzoylated cellulose of different wettability from melon and moringa pod waste","authors":"Samuel O Olusanya, Alex E Didunyemi, Sunday M Ajayi, Michael O Atunde, Sunday F Abimbade, Dele P Fapojuwo, Emmanuel G Olumayede, Olayide S Lawal","doi":"10.1007/s12034-024-03306-0","DOIUrl":"10.1007/s12034-024-03306-0","url":null,"abstract":"<div>This study presents the interfacial behaviour of benzoylated cellulose of different wettability from melon and moringa pods waste using Pickering emulsions systems. The benzoylated cellulose was prepared in an aqueous alkaline medium using benzoyl chloride as a modifying agent and characterized by X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy and scanning electron microscopy (SEM). The X-ray diffraction showed that crystallinity of cellulose from moringa and melon are 67.47 and 70.20%, respectively. The functionalized derivatives are thermally stable than the native counterpart. The SEM revealed that isolated cellulose suffered surface degradation upon functionalization as a result of the repeated collision between reactants. The wetting properties of the cellulose can be controlled by using different quantities of modifying agents, and the emulsions stability depend on the wettability of the emulsifiers. The higher stability recorded for the emulsions stabilized by benzoylated cellulose from moringa pod waste revealed that cellulose wettability depends on the sources.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208482","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}

引用次数: 0

Investigation of local structure by X-ray absorption fine structure and magnetic properties of CoMn2O4 nanoparticles 通过 X 射线吸收研究 CoMn2O4 纳米粒子的局部结构和磁性能

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-20 DOI: 10.1007/s12034-024-03287-0

Sanjna Rajput, Chandana Rath

{"title":"Investigation of local structure by X-ray absorption fine structure and magnetic properties of CoMn2O4 nanoparticles","authors":"Sanjna Rajput, Chandana Rath","doi":"10.1007/s12034-024-03287-0","DOIUrl":"10.1007/s12034-024-03287-0","url":null,"abstract":"<div>Local structure and magnetic properties of CoMn2O4 nanoparticles prepared by co-precipitation method have been examined. X-ray diffraction pattern shows mixed phase of tetragonal and cubic phases at room temperature with crystallite size of 42 nm, while Fourier transform infrared spectrum shows bands corresponding to tetrahedral and octahedral sites of spinel. Pre-edge feature from XANES and Fourier transform (FT) EXAFS spectra at Co and Mn K-edges confirm that majority of Co and Mn occupy A and B sites, respectively, while small amount of Co and Mn occupies the B and A sites, respectively. The spin dynamics of these nanoparticles show the dispersion of ac susceptibility (χ″) with frequency, and confirm the spin-glass like behaviour. Surprisingly, we observe a progressive increase in vertical magnetization shift (VMS), while measuring magnetization under field-cooled condition. Remarkably, a maximum VMS of 2.45 emu g−1 and exchange bias (EB) of 888.5 Oe were observed under a 10,000 Oe cooling field. Such a shift is intricately linked to the Yafet–Kittel spin structure of Mn3+ localized in B site and the EB could be due to the interaction between ferrimagnetic and spin-glass like phase.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208484","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}

引用次数: 0

Exploring the impact of silica and modifier ions on bioactivity and antimicrobial characteristics of quaternary 81S and ternary 85S bio-glasses 探索二氧化硅和改性离子对四元 81S 和三元 85S 生物玻璃的生物活性和抗菌特性的影响

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-19 DOI: 10.1007/s12034-024-03278-1

Akhilesh Kumar Yadav, Chandana Rath

{"title":"Exploring the impact of silica and modifier ions on bioactivity and antimicrobial characteristics of quaternary 81S and ternary 85S bio-glasses","authors":"Akhilesh Kumar Yadav, Chandana Rath","doi":"10.1007/s12034-024-03278-1","DOIUrl":"10.1007/s12034-024-03278-1","url":null,"abstract":"<div>Here, we assess the effect of silica and modifier ions on the biological performance of quaternary 81S bio-glass (81SiO2–16CaO–2P2O5–1Na2O mol%) against ternary 85S bio-glass (85SiO2–10CaO–5P2O5 mol%) synthesized via Stober’s method. The in vitro simulated body fluid (SBF) assay confirms the deposition of a hydroxyapatite layer on 81S and 85S bio-glasses, verified by XRD, FTIR and HRSEM analyses. However, a notable difference emerges in the pH study, where a slower degradation rate has been observed in the case of 85S compared to that of 81S bio-glass, which can be attributed to the presence of high silica content. In the MTT assay, 81S bio-glass exhibits significantly higher cell viability of 130%, surpassing that of 85S bio-glass, where 114% of cell viability is detected. While both bio-glasses exhibit antibacterial properties, 81S shows a higher efficacy in inhibiting the growth of E. coli by 47% and S. aureus by 51%, whereas 85S demonstrates comparatively lower inhibition, restraining E. coli by 16% and S. aureus by 35%. The substantial difference in antibacterial activity can be attributed to a slower dissolution rate of 85S bio-glass, which results in a very small change in pH of the surrounding environment. In conclusion, 81S bio-glass demonstrates superior bioactivity, cell proliferation and antimicrobial efficacy, making it a promising candidate for biomedical applications.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208486","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}

引用次数: 0

Study of room-temperature deposited ZrNx thin films 室温沉积 ZrNx 薄膜的研究

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-19 DOI: 10.1007/s12034-024-03276-3

Nikita Choudhary, S Kalal, A Tayal, B Mahapatra, S Mukherjee, Mukul Gupta

{"title":"Study of room-temperature deposited ZrNx thin films","authors":"Nikita Choudhary, S Kalal, A Tayal, B Mahapatra, S Mukherjee, Mukul Gupta","doi":"10.1007/s12034-024-03276-3","DOIUrl":"10.1007/s12034-024-03276-3","url":null,"abstract":"<div>Zirconium nitride (ZrN) has attracted scientific interest due to its diverse physical and functional properties. Despite the energetic favourability of room-temperature synthesis of ZrNx, only a handful attempts have been made to understand the low-temperature synthesis protocols. In the present work, we synthesized a series of Zr–N thin films by varying partial N2 gas flow (RN2) at room temperature (300 K). The structural and compositional characteristics of resulting Zr–N films were studied. The investigation combines X-ray reflectivity (XRR), X-ray diffraction (XRD), X-ray absorption fine structure (XAFS) measurements, which includes X-ray absorption near-edge structure (XANES), extended X-ray absorption fine structure (EXAFS) and variable angle spectroscopic ellipsometer (VASE). XRR results reveal the effects of varying RN2 on deposition rate, providing insights into the formation of ZrN phase. XRD patterns reveal the structural evolution from the hcp Zr to fcc ZrN phase. Further, structural parameters, including lattice parameter and crystallite size are systematically examined, revealing high-quality nature of the films, with optimal results observed in RN2 = 5–10% samples. XAFS measurements, particularly XANES of N and Zr K-edges, provide insights into the local environment, showing a centrosymmetric structure with octahedral symmetry within the ZrN films. Shifting of pre-edge features in the XANES spectra suggests variations in the oxidation state, implying a complex interplay between Zr and N atoms within the films. Emphasizing the importance of EXAFS, this study showcases its reliability for quantitative analyses. The technique unravels atomic coordination and bond lengths within the Zr–N films, which is crucial for a comprehensive understanding of the film’s structural characteristics. VASE measurement was done to understand the optical behaviour from the real and imaginary parts of permittivity spectra.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208485","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}

引用次数: 0