Journal of Non-crystalline Solids最新文献_第6页

A new perspective on the glass transition, tack and rheology of oligomeric epoxy resins 低聚环氧树脂玻璃化转变、粘性和流变学的新视角

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-17 DOI: 10.1016/j.jnoncrysol.2024.123261

LM Amirova , KA Andrianova , AM Gaifutdinov , RR Amirov

{"title":"A new perspective on the glass transition, tack and rheology of oligomeric epoxy resins","authors":"LM Amirova , KA Andrianova , AM Gaifutdinov , RR Amirov","doi":"10.1016/j.jnoncrysol.2024.123261","DOIUrl":"10.1016/j.jnoncrysol.2024.123261","url":null,"abstract":"<div><div>Bis-phenol A based oligomeric epoxy resins with known molecular characteristics were selected as model liquids for the study of glass transition processes, rheological properties and tack. The effect of cooling and heating rates on the glass transition dynamics of epoxy resins has been studied. Rheology and differential scanning calorimetry methods were used to determine the fragility indices of oligomeric epoxy resins. The tack of oligomers was determined as a function of the reduced temperature T/Tg, and it is shown that the tack parameters for all studied oligomers correlate well with their fragility indices.</div><div>Rheological measurements of epoxy oligomers were performed in the oscillation mode in a wide frequency range. Applying the principle of time-temperature superposition, generalized dependencies of the storage and loss modulus on the weight average molecular weight and molecular-mass distribution was determined. The parameters of generalized frequency dependences of the complex modulus components and the molecular weight characteristics of oligomers were correlated.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123261"},"PeriodicalIF":3.2,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142445338","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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Fluidity and structure of aluminate slags for smelting high-alumina iron ores: Effect of CaO/SiO2 mass ratio 冶炼高铝铁矿石的铝酸盐炉渣的流动性和结构：氧化钙/二氧化硅质量比的影响

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-16 DOI: 10.1016/j.jnoncrysol.2024.123264

Shuo Zhang , Xiaohua Liu , Yong Hou , Jia Guo , Hanghang Zhou , Xuewei Lv

{"title":"Fluidity and structure of aluminate slags for smelting high-alumina iron ores: Effect of CaO/SiO2 mass ratio","authors":"Shuo Zhang , Xiaohua Liu , Yong Hou , Jia Guo , Hanghang Zhou , Xuewei Lv","doi":"10.1016/j.jnoncrysol.2024.123264","DOIUrl":"10.1016/j.jnoncrysol.2024.123264","url":null,"abstract":"<div><div>Slag regulation is crucial for achieving smelting of high-alumina iron ore in blast furnaces. This study investigated the fluidity and structure of CaO-SiO<sub>2</sub>–10 wt.%MgO-30 wt.%Al<sub>2</sub>O<sub>3</sub> slag by varying the CaO/SiO<sub>2</sub> ratio (1.0–2.0). The results revealed that viscosity decreased with increasing CaO/SiO<sub>2</sub> ratio, while the free running temperature, defined as the temperature at which the slag can flow freely, initially increased and then decreased, peaking at the range of 1.2–1.6. Interestingly, the free running temperature of slag at basicity 2.0 (1392 °C) was lower than that at basicity 1.0 (1398 °C). Spectroscopic analysis demonstrated that increasing basicity facilitated greater charge compensation of Al<sup>3+</sup> ions, resulting in an increased amount of [AlO<sub>4</sub>] tetrahedra. Moreover, increasing free oxygen promoted the depolymerization of [SiO<sub>4</sub>] and [AlO<sub>4</sub>] tetrahedra, reducing bridging oxygen and increasing non-bridging oxygen. Consequently, the slag's overall polymerization degree decreased. Furthermore, MD simulations identified two distinct fracture mechanisms of bridging oxygen within the Si-O-Si structure.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123264"},"PeriodicalIF":3.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142440990","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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Crystallization, structure-property evolution, and solidification of heavy metals of glass-ceramics based on copper tailing/coal slag/red mud 基于铜尾矿/煤渣/红泥的玻璃陶瓷的结晶、结构-性能演变和重金属凝固

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-16 DOI: 10.1016/j.jnoncrysol.2024.123263

Zhenbei Pan , Qikun Wang , Hongqian Wang , Liusai Yang , Xianhong Zhu , Shengnan Lin , Yingying Lv , Jie Zheng , Wenjiu Duan , Jianlei Liu

{"title":"Crystallization, structure-property evolution, and solidification of heavy metals of glass-ceramics based on copper tailing/coal slag/red mud","authors":"Zhenbei Pan , Qikun Wang , Hongqian Wang , Liusai Yang , Xianhong Zhu , Shengnan Lin , Yingying Lv , Jie Zheng , Wenjiu Duan , Jianlei Liu","doi":"10.1016/j.jnoncrysol.2024.123263","DOIUrl":"10.1016/j.jnoncrysol.2024.123263","url":null,"abstract":"<div><div>The Dexing copper tailing (DCT), Coal slag (CS) and Red mud (RM) were used to prepare a solid waste-derived glass-ceramics. The result shows that the stable base glass can be formed when DCT/CS/RM mass ration is 35/25/40. Different crystallization temperatures (780∼980 ℃) were implemented on the base glass, and found that the glass-ceramics with Ca(Mg<sub>0.5</sub>Al<sub>0.5</sub>)((Si<sub>1.5</sub>Al<sub>0.5</sub>)O<sub>6</sub>) as the main crystal phase can be synthesized, whose bulk density, water absorption, Vickers hardness, bending strength, acid/alkali-resistance are in the range of 2.747∼2.887 g/cm<sup>3</sup>, 0.010∼0.027 %, 6.65∼8.24 GPa, 33.89∼118.53 MPa, 67.77∼99.97/97.85∼99.98 %, respectively. Especially, the GC880 not only shows the best properties (bulk density: 2.87 g/cm<sup>3</sup>; water absorption: 0.018 %; Vickers hardness: 6.96 GPa; bending strength: 118.53 MPa; acid/alkali-resistance: 99.34/99.97 %), but also has an solidification effect on heavy metal ions (Cr<sup>3+</sup>/Mn<sup>2+</sup>/Fe<sup>3+</sup>/Cu<sup>2+</sup>/Ni<sup>2+</sup>), wherein the leaching concentration reduction rates of Mn<sup>2+</sup> and Fe<sup>3+</sup> are over 97 %, which has the potential to be applied in decorative glass-ceramics.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123263"},"PeriodicalIF":3.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142440989","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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Improvement for soft magnetic properties of FeSiBCuNb nanocrystalline powder cores by adding FeNi powder 添加铁镍粉末改善铁硅铜铌纳米晶粉芯的软磁特性

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-16 DOI: 10.1016/j.jnoncrysol.2024.123260

Yanyan Song , Shaoxiong Zhou , Zhi Zhang , Ruibiao Zhang , Xiantao Li , Xueyan Jing

引用次数: 0

Effect of cold-cap-bottom shear stress on primary foam stability 冷帽底剪切应力对初级泡沫稳定性的影响

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-16 DOI: 10.1016/j.jnoncrysol.2024.123262

Pavel Hrma , Pavel Ferkl , Richard Pokorný , Albert A. Kruger

引用次数: 0

Germanium based glass modified by graphene as anode material with high capacity for lithium-ion batteries 石墨烯修饰的锗基玻璃作为锂离子电池的高容量负极材料

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-13 DOI: 10.1016/j.jnoncrysol.2024.123257

Siguang Feng, Xinlong Li, Chen Shang, Liangpeng Tang, Junjie Zhang

{"title":"Germanium based glass modified by graphene as anode material with high capacity for lithium-ion batteries","authors":"Siguang Feng, Xinlong Li, Chen Shang, Liangpeng Tang, Junjie Zhang","doi":"10.1016/j.jnoncrysol.2024.123257","DOIUrl":"10.1016/j.jnoncrysol.2024.123257","url":null,"abstract":"<div><div>The performance of a lithium-ion battery (LIB) is largely contingent upon its anode material. At present, germanium-based anode materials are of interest due to their high theoretical capacity, but there are fewer studies on germanium-based glass anode materials. In this work, graphene mixed germanium-based glass composite material was fabricated utilizing the ball-milling technique. The addition of graphene greatly reduces the charge transfer resistance of the germanium-based glass anode during cycling. Meanwhile, the composite anode exhibited a high specific capacity of 1101.5 mAh g<sup>-1</sup> during the first discharge cycle, and the discharge/charge specific capacity was still as high as 1108.2/1098.6 mAh g<sup>-1</sup> after 450 cycles at a current density of 500 mA g<sup>-1</sup>. Moreover, at a high current of 2 A g<sup>-1</sup>, the composite anode still maintains a high discharge specific capacity of 437.2 mAh g<sup>-1</sup>, and there is no obvious swelling on the surface, showing excellent stability. It is hoped that the current research endeavor may offer a fresh direction for future studies aimed at optimizing germanium-based glass anode materials.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123257"},"PeriodicalIF":3.2,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433313","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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Modifications of silicate bioglass synthesis and composition for in vitro dissolution control: Static and dynamic assessment 改变硅酸盐生物玻璃的合成和成分，实现体外溶解控制：静态和动态评估

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-11 DOI: 10.1016/j.jnoncrysol.2024.123254

Stefania Wolff , Sharafat Ali , Jakub Karczewski , Małgorzata Rutkowska , Hiroyo Segawa , Natalia Anna Wójcik

{"title":"Modifications of silicate bioglass synthesis and composition for in vitro dissolution control: Static and dynamic assessment","authors":"Stefania Wolff , Sharafat Ali , Jakub Karczewski , Małgorzata Rutkowska , Hiroyo Segawa , Natalia Anna Wójcik","doi":"10.1016/j.jnoncrysol.2024.123254","DOIUrl":"10.1016/j.jnoncrysol.2024.123254","url":null,"abstract":"<div><div>A set of fifteen calcium-phosphate-silicate glass samples, varying in alkali, magnesium, silicon, and nitrogen content, was prepared, and their structural, thermal, and <em>in vitro</em> dissolution properties were analyzed. Infrared spectroscopy showed a high degree of depolymerization of the silicate network consisting mainly of Q<sup>2</sup> and Q<sup>3</sup> units. Thermal analysis showed that the silicon content primarily affects both the glass transition temperature and the thermal stability of the glasses. <em>In vitro</em> dissolution studies were conducted both in static and dynamic modes in phosphate-buffered saline. Greater weight loss was observed for materials tested in the dynamic mode than in the static mode. Ion concentration profiles determined for PBS after immersing the glasses showed the release of sodium and calcium into solutions. Subsequent studies, conducted using scanning electron microscopy, X-ray diffraction, and infrared spectroscopy showed the formation of an amorphous or crystalline layer of calcium phosphates, most likely hydroxyapatite.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123254"},"PeriodicalIF":3.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424661","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

Viscosities and structures of SiO2-CaO-3wt%MgO-10wt%Fe2O3-10wt%Al2O3-Cr2O3 coal slags SiO2-CaO-3wt%MgO-10wt%Fe2O3-10wt%Al2O3-Cr2O3 煤渣的粘度和结构

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-11 DOI: 10.1016/j.jnoncrysol.2024.123253

Renze Xu , Zhen Wang , Haichuan Xu

{"title":"Viscosities and structures of SiO2-CaO-3wt%MgO-10wt%Fe2O3-10wt%Al2O3-Cr2O3 coal slags","authors":"Renze Xu , Zhen Wang , Haichuan Xu","doi":"10.1016/j.jnoncrysol.2024.123253","DOIUrl":"10.1016/j.jnoncrysol.2024.123253","url":null,"abstract":"<div><div>The effects of Cr<sub>2</sub>O<sub>3</sub> on viscosities and structure evolutions of SiO<sub>2</sub>-CaO-3wt%MgO-10wt%Fe<sub>2</sub>O<sub>3</sub>–10wt%Al<sub>2</sub>O<sub>3</sub>-(1–5wt%)Cr<sub>2</sub>O<sub>3</sub> coal slags were investigated in this work. The viscosity of the coal slag decreased with increasing the Cr<sub>2</sub>O<sub>3</sub> content in coal slags. The role of Cr<sub>2</sub>O<sub>3</sub> in present systems was clarified. Cr<sub>2</sub>O<sub>3</sub> was a basic oxide in the coal slags, and Cr<sup>3+</sup>mainly entered into the slag structures as the form of CrO<sub>6</sub> units to occupy the octahedral positions, which could depolymerize the complex structures. With the addition of Cr<sub>2</sub>O<sub>3</sub> into coal slags, the mole ratio of O<sup>2-</sup> and O<sup>-</sup> raised while the mole fraction of O<sup>0</sup> declined, suggesting Cr<sub>2</sub>O<sub>3</sub> simplified the whole structure of the coal slags and adding Cr<sub>2</sub>O<sub>3</sub> to the present slags could lead to a lower viscosity. The variations of slag viscosities were consistent with the change tendencies of structures analyzed by Raman spectra, <sup>27</sup>Al NMR and O<sub>1s</sub> XPS.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123253"},"PeriodicalIF":3.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424662","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

Effect of enthalpy relaxation rejuvenation on microstructure and corrosion resistance of a Zr-based bulk metallic glass 焓弛豫年轻化对 Zr 基块状金属玻璃微观结构和耐腐蚀性的影响

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-11 DOI: 10.1016/j.jnoncrysol.2024.123259

J. Jiang , H.J. Sun , W.H. Zhou , Z.B. Wang , J. Sun , Y. Li

{"title":"Effect of enthalpy relaxation rejuvenation on microstructure and corrosion resistance of a Zr-based bulk metallic glass","authors":"J. Jiang , H.J. Sun , W.H. Zhou , Z.B. Wang , J. Sun , Y. Li","doi":"10.1016/j.jnoncrysol.2024.123259","DOIUrl":"10.1016/j.jnoncrysol.2024.123259","url":null,"abstract":"<div><div>Enthalpy relaxation rejuvenation is a recently developed promising method for modulating mechanical properties of metallic glasses (MGs), but its effect on corrosion resistance, which is important for applications of MGs, has never been studied before. This paper studies its effects on microstructure and corrosion of a Zr<sub>52.5</sub>Cu<sub>17.9</sub>Ni<sub>14.6</sub>Al<sub>10</sub>Ti<sub>5</sub> bulk metallic glasses (BMGs) in 3.5 wt% NaCl solution. The results show that the system energy increases after rejuvenation, but the content of local ordering structure, which results in chemical inhomogeneity, is almost changeless, as compared to the structure-relaxed state. The enthalpy relaxation rejuvenation has minimal effects on passivation and pitting corrosion of structure-relaxed samples, with no apparent adverse effects. Since pitting corrosion of Zr<sub>52.5</sub>Cu<sub>17.9</sub>Ni<sub>14.6</sub>Al<sub>10</sub>Ti<sub>5</sub> BMGs is dominated by pit initiation and chemical inhomogeneity could initiate pitting corrosion, this minimal effect is attributed to the nearly unchanged chemical inhomogeneity of rejuvenated samples. This finding provides valuable information for industrial applications of Zr-based BMGs.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123259"},"PeriodicalIF":3.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424799","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

Semi-interpenetrating networks of ANF/SiO2 composite aerogel with lightweight, compressible, and excellent flame retardancy properties 具有轻质、可压缩和优异阻燃性能的 ANF/SiO2 复合气凝胶半互穿网络

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2024-10-11 DOI: 10.1016/j.jnoncrysol.2024.123256

Xiaotong Zheng, Fuhai Guo, Yuanyuan Liu, Guangli Hu, Qingfu Wang, Minghan Xu

{"title":"Semi-interpenetrating networks of ANF/SiO2 composite aerogel with lightweight, compressible, and excellent flame retardancy properties","authors":"Xiaotong Zheng, Fuhai Guo, Yuanyuan Liu, Guangli Hu, Qingfu Wang, Minghan Xu","doi":"10.1016/j.jnoncrysol.2024.123256","DOIUrl":"10.1016/j.jnoncrysol.2024.123256","url":null,"abstract":"<div><div>To design ultralight nanocomposite aerogels with good compatibility of different components, excellent thermostability, flame retardancy and strength is an urgent issue to be addressed. In this work, we fabricated a lightweight, compressible aramid nanofiber/silicon dioxide (ANF/SiO<sub>2</sub>) composite aerogel by sol-gel method. The homogeneous SiO<sub>2</sub> knots were formed in-situ among the nanofibers resulting a semi-interpenetrating network structure. Due to the supporting effect of the ANF on the overall skeleton and the inhibiting effect of SiO<sub>2</sub> the compression properties of the ANF/SiO<sub>2</sub> aerogels were significantly improved. In addition, the aerogel shows low thermal conductivity, excellent thermal stability and flame retardancy meanwhile advanced self-extinguishing properties even after two minutes combustion. The design does not rely on any toxic or corrosive substances and provides a new insight into the preparation of composite aerogels with green, compressibility, thermal insulation and excellent flame retardancy.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"646 ","pages":"Article 123256"},"PeriodicalIF":3.2,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424659","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