Materials Chemistry and Physics最新文献_第5页

Superhydrophobic electrodeposited nano-sio2/N-doped carbon dots coating for Mg alloys 用于镁合金的超疏水电沉积纳米 sio2/N 掺杂碳点涂层

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-17 DOI: 10.1016/j.matchemphys.2024.130164

Xutong Duan , Yongfei Wang , Ruijie Guo , Baolong Niu , Huifang Wang , Hong Yan

{"title":"Superhydrophobic electrodeposited nano-sio2/N-doped carbon dots coating for Mg alloys","authors":"Xutong Duan , Yongfei Wang , Ruijie Guo , Baolong Niu , Huifang Wang , Hong Yan","doi":"10.1016/j.matchemphys.2024.130164","DOIUrl":"10.1016/j.matchemphys.2024.130164","url":null,"abstract":"<div><div>To solve the problems of poor corrosion resistance, low adhesion and poor abrasion resistance of general superhydrophobic coatings, A superhydrophobic nano-SiO<sub>2</sub>/N-doped carbon dots (<em>N</em>-CDs) was prepared on the surface of AZ31B magnesium alloy. The electrolyte consisted of nano-silica particles and <em>N</em>-CDs dispersion, where nano-SiO<sub>2</sub> particles were innovatively added to improve the abrasion resistance of the coating. After the superhydrophobic modification by 1<em>H</em>,1<em>H</em>,2<em>H</em>,2<em>H</em>-perfluorooctyltriethoxysilane (PTES), the coating exhibited a water contact angle (WCA) of 154° and a rolling angle (RA) of 7°. The analysis undertaken via potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) demonstrated improved electrochemical performance for the coated magnesium alloy samples when compared with uncoated counterparts. The assemblies formed by the coordination of Mg<sup>2+</sup> with the functional groups of <em>N</em>-CD (−NH<sub>2</sub>, –COOH and –OH) were electrodeposited onto the surface of the magnesium alloy matrix, achieving a dense protective film and thereby slowing down the corrosion rate. At the same time, the abrasion resistance test results indicated that the prepared coating possessed excellent abrasion resistance, possessing the ability to resist damage to the coating caused by friction to a certain extent, proposing a new idea for fabricating superhydrophobic coatings with increased abrasion resistance on Mg alloys.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"330 ","pages":"Article 130164"},"PeriodicalIF":4.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721715","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

Study of micro-expansion deformation of cement-based materials enhanced by soybean-wax-coated carbide slag composites 大豆蜡涂层电石渣复合材料增强水泥基材料微膨胀变形的研究

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-17 DOI: 10.1016/j.matchemphys.2024.130165

Huiyuan Ning , Changwang Yan , Ju Zhang , Junqing Li , Weifeng Nie , Zhongtao Lv , Qvjiang Wu , Xiangdong Meng , Fengwei Zhao

{"title":"Study of micro-expansion deformation of cement-based materials enhanced by soybean-wax-coated carbide slag composites","authors":"Huiyuan Ning , Changwang Yan , Ju Zhang , Junqing Li , Weifeng Nie , Zhongtao Lv , Qvjiang Wu , Xiangdong Meng , Fengwei Zhao","doi":"10.1016/j.matchemphys.2024.130165","DOIUrl":"10.1016/j.matchemphys.2024.130165","url":null,"abstract":"<div><div>The industrial solid waste carbide slag (CS) is composed mainly of calcium hydroxide (Ca(OH)<sub>2</sub>), which produces calcium oxide (CaO) after calcination and can be used as a CaO-type expansion agent. However, the hydration reaction of calcined CS often occurs before the cement setting and hardening time, and the resulting expansion is ineffective, which limits the wide application of CS as a CaO expansion agent. In this study, a new type of swelling agent, soybean-wax-coated CS composite (CSCC), was prepared by using soybean wax (SW) to coat the calcined CS to delay its hydration. In this study, the microstructural composition of CSCC was investigated, and the hydration history and retardation characteristics and effects of CSCC with various mixing ratios were analysed. The micro-expansion deformation and strength development of CSCC cement-based materials were also investigated, and a micro-expansion model was established. The results showed that SW wrapped around the surface of CS particles formed a dense wrapping structure and effectively delayed hydration. Meanwhile, compared with CS, CSCC had an induction period in the hydration process due to the coating of SW, which greatly delayed the hydration of CS. Also, the optimum mixing ratio of CSCC was determined by analysing the delayed hydration onset time and the time of the second exothermic rate peak. It was also found that incorporating CSCC resulted in a significant increase in the micro-expansion deformation of the cementitious materials but a decrease in the compressive strength.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"332 ","pages":"Article 130165"},"PeriodicalIF":4.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722720","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

Unusual dielectric properties of NaCl solutions within confined MoS2 monolayer nanochannels 受限 MoS2 单层纳米通道内 NaCl 溶液的异常介电特性

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130161

Xinwu Li , Zihan Xu , Xinyu Zeng , Wenzhi He , Guangming Li , Yanhui Wu , Haochen Zhu

{"title":"Unusual dielectric properties of NaCl solutions within confined MoS2 monolayer nanochannels","authors":"Xinwu Li , Zihan Xu , Xinyu Zeng , Wenzhi He , Guangming Li , Yanhui Wu , Haochen Zhu","doi":"10.1016/j.matchemphys.2024.130161","DOIUrl":"10.1016/j.matchemphys.2024.130161","url":null,"abstract":"<div><div>The dielectric behavior of NaCl solutions at varying concentrations within different types of MoS<sub>2</sub> nanochannels has been systematically investigated through molecular dynamics simulations. This comprehensive set of simulations aims to provide profound insights into the interplay among spatial dimensions, structural configurations, and electrolyte solution concentration on dielectric properties. The findings presented in this paper reveal that the dielectric constant of both aqueous and NaCl solutions in confined phases exhibits anisotropic behavior within MoS<sub>2</sub> confinement systems. Notably, as the concentration of NaCl solution increases, the axial dielectric constant in these confined environments decreases, while the radial dielectric constant experiences an increase, demonstrating a non-monotonic trend with critical points observed at 0.4 mol/L and 0.6 mol/L for NaCl solutions. This anomalous dielectric behavior can be attributed to the reorientation of water molecules at lower concentrations aimed at preserving the original hydrogen bonding network within the confined system, which leads to enhanced dipole fluctuations and an unusual increase in radial dielectric constants.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"331 ","pages":"Article 130161"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721512","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

Annealing-induced phase transformation in vapor deposited tellurium dioxide thin films and its structural, chemical analysis 退火诱导的气相沉积二氧化碲薄膜相变及其结构和化学分析

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130160

K. Chandra, M.G. Mahesha, Pramoda Kumara Shetty

{"title":"Annealing-induced phase transformation in vapor deposited tellurium dioxide thin films and its structural, chemical analysis","authors":"K. Chandra, M.G. Mahesha, Pramoda Kumara Shetty","doi":"10.1016/j.matchemphys.2024.130160","DOIUrl":"10.1016/j.matchemphys.2024.130160","url":null,"abstract":"<div><div>Tellurium dioxide (TeO<sub>2</sub>) thin films were synthesized by thermal vacuum deposition on glass substrate and samples were annealed from 250 °C to 400 °C at 50 °C interval. The annealing was found to have a significant impact on the structural, optical, and electrical properties of TeO<sub>2</sub> thin films. X-ray diffraction spectra (XRD) revealed an increase in crystallite size and corresponding decrease in micro strain and dislocation density with increasing temperature. Annealed sample at 350 °C and 400 °C showed phase change from γ-TeO<sub>2</sub> to β-TeO<sub>2</sub> since β phase is thermodynamically favourable with greater free energy change. X-ray Photoelectron spectroscopy of all annealed sample confirm the improvement in formation of TeO<sub>2</sub> from metallic Tellurium with air annealing. The XPS analysis also confirmed the existence of interstitial Oxygen, and its concentration increased at 400 °C. Raman spectroscopy employed to investigate the variation in vibrational modes with temperature and correlate these findings with other structural and chemical analyses. Photoluminescence study of TeO<sub>2</sub> thin films reveals evolution of defect states with annealing temperature. Decrease in intensity of defect-related emissions (green, near-IR) suggests improved crystallinity which was in turn supported by the disappearance of low-level defect peaks upon annealing.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"330 ","pages":"Article 130160"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721838","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

Mechanical and biocorrosion properties of Ti-XZrC composites fabricated by spark plasma sintering 火花等离子烧结法制造的 Ti-XZrC 复合材料的力学和生物腐蚀性能

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130153

Nima Hejazi, Mojtaba Najafizadeh, Mansoor Bozorg, Maryam Shojaie-bahaabad

{"title":"Mechanical and biocorrosion properties of Ti-XZrC composites fabricated by spark plasma sintering","authors":"Nima Hejazi, Mojtaba Najafizadeh, Mansoor Bozorg, Maryam Shojaie-bahaabad","doi":"10.1016/j.matchemphys.2024.130153","DOIUrl":"10.1016/j.matchemphys.2024.130153","url":null,"abstract":"<div><div>The Ti-XZrC (X = 5, 10, 15 wt%) composites were fabricated by spark plasma sintering. The composites microstructure, mechanical, and biocorrosion properties were studied and compared with the CP Ti fabricated by the same condition. The results show that with the increasing amount of the ZrC in the matrix, the bulk composites relative is density reduced and the hardness and strength of the composites are significantly increased for fabricating the TiC intermetallics in microstructure. The Ti–5ZrC composite has significantly higher biocorrosion resistance than the CP Ti, and the polarization resistance of the composites is reduced by increasing the ZrC content from 5 to 15, because of the increasing porosities and diffusion rate of corrosive ions through the oxide layers. Generally, the Ti-XZrC composites show significantly excellent mechanical properties with increasing ZrC than the CP Ti, and the biocorrosion resistivity of the Ti–5ZrC composite as compared to the CP Ti is higher, suggesting that the Ti–5ZrC composite is favorable material for the biomedical application as compared with the CP Ti and the other composition of the Ti-XZrC composites. The Ti–5ZrC composite exhibited a hardness of 326 Hv and an ultimate tensile strength of 0.901 GPa, demonstrating significant improvements over commercially pure titanium. Additionally, this composite showed a polarization resistance of 720 kΩ cm<sup>2</sup> and a low corrosion current density of 4.60 μA/cm<sup>2</sup>, indicating superior biocorrosion resistance.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"330 ","pages":"Article 130153"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721660","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

Comparative study of pure and chromium-doped nickel oxide nanoparticles synthesized by combustion synthesis for optoelectronic applications

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130150

M.A. Sayed , Ashwani Kumar , Kamlesh V. Chandekar , Mohd Shkir

{"title":"Comparative study of pure and chromium-doped nickel oxide nanoparticles synthesized by combustion synthesis for optoelectronic applications","authors":"M.A. Sayed , Ashwani Kumar , Kamlesh V. Chandekar , Mohd Shkir","doi":"10.1016/j.matchemphys.2024.130150","DOIUrl":"10.1016/j.matchemphys.2024.130150","url":null,"abstract":"<div><div>In the present research work, the incorporation of Chromium (Cr) doped nickel oxide (NiO) nanoparticles (NPs) were synthesized using the flash combustion process. The impact of Cr-doped NiO (Cr:NiO) NPs on the structural, optical, and dielectric properties was investigated in the research work. X-ray Diffraction (XRD) and FT-Raman (Fourier transform Raman) were also used to determine the phase of Cr: NiO NPs. The crystallite size decrease from 26.2 to 8.5 nm as the doping Cr concentration increased from 0.0 wt.% Cr to 5.0 wt.% Cr. The values of crystallite size and lattice strain were observed to vary with the changing concentrations of Cr: NiO nanoparticles (NPs), respectively. Scanning electron microscopy (FSEM) images revealed that Cr: NiO NPs have spherical shape particles of the prepared NPs. Diffuse reflectance spectroscopy (DRS) was employed to measure the optical band gaps of the prepared NPs using the Kubelka-Munk (K-M) function. The optical energy gaps for Cr:NiO decreased from 3.47 eV to 2.86 eV with an increase in the doping concentration of Cr in NiO. The dielectric properties have been investigated by incorporating Cr into the NiO lattice structure. The highest dielectric constant was observed for 7.5 wt% Cr loaded NiO NPs, which is almost two times that of pure NiO. The reduced crystallite size, enhanced band gap, and dielectric properties indicate the significance of the synthesized NPs in optoelectronic devices.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"332 ","pages":"Article 130150"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743757","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

Innovative Z-scheme MnV₂O₆/g-C₃N₄ nanocomposite: photocatalytic, electrocatalytic and biosensing properties 创新性 Z 型 MnV₂O₆/g-C₃N₄ 纳米复合材料：光催化、电催化和生物传感特性

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130159

Muhammad Danish Khan , Masood ul Hassan Farooq , Iqra Fareed , Tahmina Maqsood , Faisal Nawaz , Yahya Sandali , Afrah Alzahrani , Muhammad Tahir , Faheem K. Butt

{"title":"Innovative Z-scheme MnV₂O₆/g-C₃N₄ nanocomposite: photocatalytic, electrocatalytic and biosensing properties","authors":"Muhammad Danish Khan , Masood ul Hassan Farooq , Iqra Fareed , Tahmina Maqsood , Faisal Nawaz , Yahya Sandali , Afrah Alzahrani , Muhammad Tahir , Faheem K. Butt","doi":"10.1016/j.matchemphys.2024.130159","DOIUrl":"10.1016/j.matchemphys.2024.130159","url":null,"abstract":"<div><div>Herein, we report Z-scheme mediated pn-junction between manganese vanadate and graphitic carbon nitride, highlighting its photocatalytic degradation capabilities, hydrogen and oxygen evolution reactions and electrochemical biosensing efficacy towards ascorbic acid. The material was synthesized using a co-precipitation method followed by annealing and characterized through XRD, FESEM, FTIR, XPS, UV–visible spectroscopy and EIS in conjunction with Mott-Schottky analysis. The heterojunction demonstrates promising results for photocatalytic degradation of organic dyes. This work further discusses the carrier concentration, decay rate, cyclic stability and photocatalytic degradation mechanism. The results for HER and OER indicate the synthesized material's capability for oxygen and hydrogen production at commercial scale, with Tafel slope calculations providing additional insights. Electrochemical biosensing of ascorbic acid reveals that the material can detect low concentrations of ascorbic acid under various parameters. The results indicate that the material is highly suitable for environmental degradation, electrocatalytic production of hydrogen and oxygen and medical diagnostics such as electrochemical biosensing.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"330 ","pages":"Article 130159"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721720","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

Innovative electrochemical quantification of brilliant blue dye with polyvinylpyrrolidone-stabilized MoS₂

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130155

Aswathy S. Murali, Beena Saraswathyamma

{"title":"Innovative electrochemical quantification of brilliant blue dye with polyvinylpyrrolidone-stabilized MoS₂","authors":"Aswathy S. Murali, Beena Saraswathyamma","doi":"10.1016/j.matchemphys.2024.130155","DOIUrl":"10.1016/j.matchemphys.2024.130155","url":null,"abstract":"<div><div>In this study, the synthesis of a composite material such as molybdenum disulphide/poly vinylpyrrolidone (MoS<sub>2</sub>/PVP) using a simple hydrothermal method is showcased. Also discovered its capability for electrochemical detection of a well-known food dye, brilliant blue (BB), which has not been previously reported. The incorporation of PVP into MoS<sub>2</sub> significantly enhanced the electrochemical stability of the composite for the detection of brilliant blue. The comprehensive analysis of the material in its original state provided a thorough understanding of its structural and morphological properties, both prior to and following the incorporation of PVP. The modifications resulting from the action of PVP intercalation were intriguing and sufficiently capable of causing a considerable impact on the electrochemical output of the entire investigation. The significant transformation in morphology, from nanoflowers to a sheet-like structure, in the presence of PVP is remarkable. The MoS<sub>2</sub>/PVP coated glassy carbon electrode (MoS<sub>2</sub>/PVP/GCE) demonstrated the broadest linear range for BB determination compared to any previously reported results, spanning from 0.8 μM to 1150.0 μM, with a limit of detection (LOD) value of 9.0 nM. The manufactured electrode has significant repeatability and reproducibility. The selectivity analysis highlights the sensor's ability to accurately and specifically detect the target analyte, even in the presence of potential interfering substances. The evaluation of MoS<sub>2</sub>/PVP/GCE in several authentic samples demonstrates the sensor's dependability in detecting BB in real-time situations.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"332 ","pages":"Article 130155"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743758","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 rhenium ion stability on coating quality in chloride molten salts 铼离子稳定性对氯化物熔盐中涂层质量的影响

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130156

Jiangfan Wang , Weichao Yuan , Li'an Zhu , Zhen Wang , Yicong Ye , Shun Li , Yu Tang , Shuxin Bai

{"title":"Impact of rhenium ion stability on coating quality in chloride molten salts","authors":"Jiangfan Wang , Weichao Yuan , Li'an Zhu , Zhen Wang , Yicong Ye , Shun Li , Yu Tang , Shuxin Bai","doi":"10.1016/j.matchemphys.2024.130156","DOIUrl":"10.1016/j.matchemphys.2024.130156","url":null,"abstract":"<div><div>Rhenium (Re) has received considerable attention due to its excellent mechanical properties at high temperatures and resistance to gas corrosion, making it suitable for high-temperature environments as a substrate and coating. Among various preparation methods, electrodeposition offers high efficiency, cost-effectiveness, and substrate shape insensitivity, making it a promising approach for Re coating and component fabrication. Research on chloride molten salt systems is prevalent; however, coating defects often arise from disproportionation reactions, a critical determinant of coating quality. To assess Re ion stability in molten salts and optimise electrodeposition, the effects of atmospheric conditions, molten salt composition, and electrode materials were investigated. Our findings revealed poor Re ion stabilisation in molten salts, susceptible to disproportionation reactions at interfaces forming ReCl<sub>5</sub> and Re. The presence of oxygen in an argon atmosphere promoted the disproportionation reaction, whereas, chlorine inhibited the reaction. The composition of the molten salt affected the Re ion structure; a larger cation radius increased Re ion stability. Similar catalytic behaviour was observed on electrode surfaces, where unstable Re ions disproportionated, weakening interfacial bonding and increasing defects.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"330 ","pages":"Article 130156"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721841","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

Sintering behaviors, microstructure and properties of Li2O–Al2O3–SiO2 glass-ceramics for LTCC applications 用于 LTCC 应用的 Li2O-Al2O3-SiO2 玻璃陶瓷的烧结行为、微观结构和性能

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-11-16 DOI: 10.1016/j.matchemphys.2024.130163

Shuo Tian , Hao Yang Shen , Jun Jie Huang , Hao Zhang , Kai Ge Liu , Bin He , Jianwei Zhao , Ling Bing Kong

{"title":"Sintering behaviors, microstructure and properties of Li2O–Al2O3–SiO2 glass-ceramics for LTCC applications","authors":"Shuo Tian , Hao Yang Shen , Jun Jie Huang , Hao Zhang , Kai Ge Liu , Bin He , Jianwei Zhao , Ling Bing Kong","doi":"10.1016/j.matchemphys.2024.130163","DOIUrl":"10.1016/j.matchemphys.2024.130163","url":null,"abstract":"<div><div>When preparing glass-ceramics using sintering method, porosity is the main reason affecting their properties. To achieve glass-ceramics with low thermal expansion performance, cold isostatic pressing is adopted to significantly reduce the porosity. In this study, we systematically analyzed the effect of CaF<sub>2</sub>/CaO content on sintering behavior, microstructure and properties of Li<sub>2</sub>O–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> (LAS) glass-ceramics. It was found that the [CaF<sub>2</sub>]/([CaO]+[CaF<sub>2</sub>]) ratio x can be used to regulate the coefficient of thermal expansion (CTE) of the LAS glass-ceramics. The optimized sample has a CTE of 2.2865 ppm/°C, which is compatible with that of silicon (2.5 ppm/°C). At the same time, low dielectric constant (5.95 ≤ ε<sub>r</sub> ≤ 8.89) and dielectric loss (1.179 × 10<sup>−3</sup> ≤ tanδ ≤2.871 × 10<sup>−2</sup>) were observed, which makes them a promising candidate for low-temperature co-fired ceramic substrate applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"330 ","pages":"Article 130163"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721839","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