Journal of Materials Science最新文献

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Double-network agar/sodium alginate hydrogel-based photothermal evaporator with layered structure for solar desalination 双层结构琼脂/海藻酸钠水凝胶光热蒸发器用于太阳能脱盐
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-15 DOI: 10.1007/s10853-025-10831-8
Jinyin Lai, Zhengqiang Guo, Wangyu Liu
{"title":"Double-network agar/sodium alginate hydrogel-based photothermal evaporator with layered structure for solar desalination","authors":"Jinyin Lai,&nbsp;Zhengqiang Guo,&nbsp;Wangyu Liu","doi":"10.1007/s10853-025-10831-8","DOIUrl":"10.1007/s10853-025-10831-8","url":null,"abstract":"<div><p>Interface solar evaporators generate fresh water through solar evaporation, presenting significant potential to address global water scarcity. However, current evaporators struggle to balance sustainability, high evaporation rates, and robust mechanical properties, resulting in limited applications. In this study, agar/sodium alginate hydrogels were synthesized using a dual-network strategy, with the internal water state adjusted to optimize their properties. Additionally, the incorporation of nanocellulose significantly enhanced the mechanical properties of the evaporator (improved 65% compressive strength), thereby extending its service life in harsh environments. Moreover, nanocellulose acted as an efficient green dispersant for carbon nanotubes (CNTs), facilitating photothermal conversion and improving solar energy absorption. Notably, we employed a freeze–thaw process to induce lateral aggregation of sodium alginate, resulting in layered water channels that optimized water transport and evaporator performance. This unique design resulted in the development of evaporators that exhibited a high evaporation rate of 3.286 kg·m<sup>−2</sup>·h<sup>−1</sup> in a 3.5 wt% NaCl solution, achieving a photothermal conversion efficiency of 98.65% under 1 kW·m<sup>−2</sup> light intensity. Moreover, even in a 20 wt% NaCl solution, the evaporation rate remained at 3.02 kg·m⁻<sup>2</sup>·h⁻<sup>1</sup>. This work combined highly hydrophilic natural materials with a specialized water delivery channel design to develop hydrogel-based solar evaporators with high evaporation rates and excellent mechanical properties, offering strong potential for long-term interfacial evaporation applications.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6581 - 6600"},"PeriodicalIF":3.5,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875358","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
Thermal imidization and kinetic characterization of polyamide acid 聚酰胺酸的热亚酰化及动力学表征
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-15 DOI: 10.1007/s10853-025-10839-0
Wei Wang, Naixin Kang, Mengyan Yu, Jiaxin Peng, Yechen Xiao, Yafei Huo, Yujie Chen, Qiang Ma, Jie Zhao
{"title":"Thermal imidization and kinetic characterization of polyamide acid","authors":"Wei Wang,&nbsp;Naixin Kang,&nbsp;Mengyan Yu,&nbsp;Jiaxin Peng,&nbsp;Yechen Xiao,&nbsp;Yafei Huo,&nbsp;Yujie Chen,&nbsp;Qiang Ma,&nbsp;Jie Zhao","doi":"10.1007/s10853-025-10839-0","DOIUrl":"10.1007/s10853-025-10839-0","url":null,"abstract":"<div><p>The imidization of Polyamide acid (PAA), as the main method to synthesis the organic polymer materials-Polyimide (PI) is influenced by pretreatment temperature. This paper focused on the thermal and kinetic characteristics of PAA imidization. Firstly, the effect of pretreatment temperature on the thermal behavior of PAA imidization was investigated by DSC and FTIR. It showed that the imidization of PAA was endothermic with 105.77 J g<sup>−1</sup> heat absorption in the range of 353.15–553.15 K. Secondly, the solvent peaks at 1359 cm⁻<sup>1</sup> and 1188 cm<sup>−1</sup> disappeared at pretreatment temperature 353.15 K, then the N–H peak of PAA at 3270 cm<sup>−1</sup> disappeared at 423.15 K and the C–N peak was enhanced at 473.15 K, indicating that the higher pretreatment temperature, the higher temperature range of PAA imidization. Finally, the kinetics characteristics of PAA imidization was studied. PAA imidization was divided into two stages, one was in the range of 353.15–423.15 K with the activation energy (<i>E</i><sub>a</sub>) of 131.15–200.07 kJ mol<sup>−1</sup>, the other one was in the range of 423.15–473.15 K with <i>E</i><sub>a</sub> of 96.43–122.72 kJ mol<sup>−1</sup>. The results indicated that the optimal PI film performance was achieved at a pretreatment temperature of 353.15 K.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6735 - 6748"},"PeriodicalIF":3.5,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875359","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
Rational design of Mo-doped NixSy/Ni2P heterostructure on nickel foam for high-efficiency hydrogen evolution in alkaline freshwater and seawater media 泡沫镍表面掺钼NixSy/Ni2P异质结构的合理设计及在碱性淡水和海水介质中高效析氢
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-15 DOI: 10.1007/s10853-025-10835-4
Chaoyang Zhu, Jinsong Xie, Yingjie Ding, Yanxin Li, Wei Yang, Hongdian Lu, Kunhong Hu
{"title":"Rational design of Mo-doped NixSy/Ni2P heterostructure on nickel foam for high-efficiency hydrogen evolution in alkaline freshwater and seawater media","authors":"Chaoyang Zhu,&nbsp;Jinsong Xie,&nbsp;Yingjie Ding,&nbsp;Yanxin Li,&nbsp;Wei Yang,&nbsp;Hongdian Lu,&nbsp;Kunhong Hu","doi":"10.1007/s10853-025-10835-4","DOIUrl":"10.1007/s10853-025-10835-4","url":null,"abstract":"<div><p>The development of highly active and long-lasting multifunctional electrocatalysts is crucial for advancing clean and renewable energy technologies. In this study, we developed a Mo-doped Ni<sub>x</sub>S<sub>y</sub>/Ni<sub>2</sub>P self-supported electrode anchored on nickel foam (Mo-Ni<sub>x</sub>S<sub>y</sub>/Ni<sub>2</sub>P/NF) through a sequential hydrothermal reaction and calcination-phosphating strategy. The optimized Mo-Ni<sub>x</sub>S<sub>y</sub>/Ni<sub>2</sub>P/NF demonstrates outstanding electrocatalytic activity for the hydrogen evolution reaction (HER) in both alkaline freshwater and simulated seawater environment. Electrochemical characterization reveals that the optimal Mo-Ni<sub>x</sub>S<sub>y</sub>/Ni<sub>2</sub>P/NF catalyst requires remarkably low overpotentials of 77 mV (alkaline freshwater) and 110 mV (alkaline simulated seawater) to achieve 10 mA cm<sup>−2</sup>, accompanied by Tafel slopes of 92.24 and 112.66 mV dec⁻<sup>1</sup>, respectively. Notably, the electrocatalyst exhibits exceptional operational stability, maintaining performance integrity for 200 h at 100 mA cm⁻<sup>2</sup> current density. Material characterization demonstrates that Mo doping induces structural modification of Ni<sub>3</sub>S<sub>2</sub> while facilitating the formation of Ni<sub>9</sub>S<sub>8</sub> phases, synergistically enhancing the catalytic architecture. Subsequent phosphating treatment further stabilizes the electrode morphology and improves interfacial charge transfer characteristics. Comparative analysis confirms the superior catalytic efficiency of Mo-Ni<sub>x</sub>S<sub>y</sub>/Ni<sub>2</sub>P/NF over conventional HER catalysts in both aqueous environments. This work provides a reasonable and feasible approach for designing highly efficient electrocatalysts.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6628 - 6641"},"PeriodicalIF":3.5,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875357","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
Neural network potential model molecular dynamics study on the effect of temperature and pressure on the lattice thermal conductivity of Mg3Sb2 温度和压力对Mg3Sb2晶格热导率影响的神经网络电位模型分子动力学研究
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-14 DOI: 10.1007/s10853-025-10755-3
Jiaojiao Cheng, Cunjie Duan, Yunzhen Du, Jizheng Duan, Meiling Qi, Yanwei Chen, Lei Yang, Wenshan Duan, Sheng Zhang, Ping Lin
{"title":"Neural network potential model molecular dynamics study on the effect of temperature and pressure on the lattice thermal conductivity of Mg3Sb2","authors":"Jiaojiao Cheng,&nbsp;Cunjie Duan,&nbsp;Yunzhen Du,&nbsp;Jizheng Duan,&nbsp;Meiling Qi,&nbsp;Yanwei Chen,&nbsp;Lei Yang,&nbsp;Wenshan Duan,&nbsp;Sheng Zhang,&nbsp;Ping Lin","doi":"10.1007/s10853-025-10755-3","DOIUrl":"10.1007/s10853-025-10755-3","url":null,"abstract":"<div><p>This study investigates the thermal transport and mechanical properties of Mg<sub>3</sub>Sb<sub>2</sub>, through molecular dynamics (MD) simulations with a neural network potential (NNP) model constructed by machine learning. The model’s computational results align closely with experimental data and Density Functional Theory (DFT) analyses. Mg<sub>3</sub>Sb<sub>2</sub> exhibits nearly isotropic thermal conductivity, which decreases with increasing temperature, in line with typical phonon scattering behavior. Additionally, the study explores the effects of pressure on thermal conductivity and structural parameters, revealing that as pressure increases, the volume of the material decreases, leading to directional variations in thermal conductivity. The findings demonstrate the reliability and accuracy of the NNP in predicting material performance.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6551 - 6564"},"PeriodicalIF":3.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875397","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
Electrophoretic deposition of intelligent anticorrosive epoxy coatings doped with pH-stimulated response ZIF-67 nanocontainer ph刺激响应型ZIF-67纳米容器掺杂智能防腐环氧涂料的电泳沉积
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-14 DOI: 10.1007/s10853-025-10843-4
Rui Gou, Yong Li, Qilong Chen, Sha Wang, Dan Sun, Changhua Li, Hongjie Li, Yi He
{"title":"Electrophoretic deposition of intelligent anticorrosive epoxy coatings doped with pH-stimulated response ZIF-67 nanocontainer","authors":"Rui Gou,&nbsp;Yong Li,&nbsp;Qilong Chen,&nbsp;Sha Wang,&nbsp;Dan Sun,&nbsp;Changhua Li,&nbsp;Hongjie Li,&nbsp;Yi He","doi":"10.1007/s10853-025-10843-4","DOIUrl":"10.1007/s10853-025-10843-4","url":null,"abstract":"<div><p>Metal corrosion has caused great damage to resource economy, and corrosion protection is particularly important. In this paper, GMZT(GO-MBI-ZIF-67-TEOS) nanomaterial was synthesized to prepare the coating. GMZT nanomaterials were mixed with epoxy resin (EP) electrophoretic coating, and the coating was prepared by electrophoretic deposition (EPD) method. Electrochemical impedance spectroscopy (EIS) test results show that the impedance modulus of GMZT/EP is 3 orders of magnitude higher than that of EP after 35 days, which enhances the anticorrosion property of the base film, and the GMZT/EP coating has excellent self-healing property. This is due to the release of the ZIF-67 dissociation ligand and the addition of inhibitors, which form a dense protective film on the metal surface. As a result, the barrier/active anticorrosion properties of epoxy coatings are improved, resulting in superior and long-lasting anticorrosion.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6516 - 6529"},"PeriodicalIF":3.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875401","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
Synergistic self-assembly of MXene monolayer dispersions doped with NiFe2O4 nanoparticles for high-performance microwave absorbers 纳米NiFe2O4掺杂MXene单层分散体在高性能微波吸收剂中的协同自组装
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-14 DOI: 10.1007/s10853-025-10802-z
Yizhi Ma, Luning Sun, Wei Wang, Yunxiang Yuan, Hongchao Zhang, Sainan Wei, Bao Shi
{"title":"Synergistic self-assembly of MXene monolayer dispersions doped with NiFe2O4 nanoparticles for high-performance microwave absorbers","authors":"Yizhi Ma,&nbsp;Luning Sun,&nbsp;Wei Wang,&nbsp;Yunxiang Yuan,&nbsp;Hongchao Zhang,&nbsp;Sainan Wei,&nbsp;Bao Shi","doi":"10.1007/s10853-025-10802-z","DOIUrl":"10.1007/s10853-025-10802-z","url":null,"abstract":"<div><p>To address the growing issue of electromagnetic radiation pollution, developing efficient electromagnetic wave-absorbing materials is both urgent and challenging. Transition metal carbides/nitrides (MXenes) are excellent conductors of electricity and possess various surface groups and imperfections, making them valuable for studying their microwave absorption capabilities. However, the complex preparation process and limited loss mechanisms of MXenes do not meet the essential requirements for wave-absorbing materials. A mild co-solvent thermal method creates a novel multi-heterostructure wave-absorbing material made of 2D monolayer MXene nanosheets and NiFe<sub>2</sub>O<sub>4</sub> nanoparticles. The MXene@NiFe<sub>2</sub>O<sub>4</sub> heterostructured material demonstrates effective impedance matching, electromagnetic coupling, polarization loss due to heterogeneous interfaces and defects, along with multiple reflections and scattering, resulting in excellent electromagnetic wave absorption performance. Notably, the final electromagnetic wave absorption performance of the MXene@NiFe<sub>2</sub>O<sub>4</sub> hybridized materials is closely linked to their electromagnetic parameters, which can be adjusted by varying the composition ratio of NiFe<sub>2</sub>O<sub>4</sub> nanoparticles. The findings suggest that by using a molar ratio of 1:0.5 of Fe in NiFe<sub>2</sub>O<sub>4</sub> nanoparticles and a loading of 30 wt% of MNF, the MNF hybrids achieve a minimal reflection loss (RL<sub>min</sub>) of − 43.9 dB at 12.39 GHz (99.994% absorption of the electromagnetic wave); the effective absorption bandwidth (EAB, RL &lt;  − 10 dB) is 5.78 GHz, encompassing the whole X-band. This endeavor can provide significant insights into the potential applications of few-layer MXene-based composites in highly effective electromagnetic wave absorption.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6496 - 6515"},"PeriodicalIF":3.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875400","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
Improvement of semiconducting and thermomechanical properties of polymer materials based on polypyrrole and polyvinylpyrrolidone 基于聚吡咯和聚乙烯吡咯烷酮的高分子材料的半导体和热机械性能的改善
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-13 DOI: 10.1007/s10853-025-10819-4
Khaled Zeggagh, Sad Atia, Mohamed Trari, Thierry Dintzer, Christophe Mélart, Patrick Lévêque, Olivier Bardagot, Zitouni Benabdelghani
{"title":"Improvement of semiconducting and thermomechanical properties of polymer materials based on polypyrrole and polyvinylpyrrolidone","authors":"Khaled Zeggagh,&nbsp;Sad Atia,&nbsp;Mohamed Trari,&nbsp;Thierry Dintzer,&nbsp;Christophe Mélart,&nbsp;Patrick Lévêque,&nbsp;Olivier Bardagot,&nbsp;Zitouni Benabdelghani","doi":"10.1007/s10853-025-10819-4","DOIUrl":"10.1007/s10853-025-10819-4","url":null,"abstract":"<div><p>In this study, we investigate how the addition of polyvinylpyrrolidone (PVP), a thermoplastic polymer, contributes to enhance the processability, thermomechanical and semiconducting properties of a semiconducting polymer without side chains. Here, polypyrrole (PPy) is chosen as reference semiconducting polymer. Different blend ratio of polyvinylpyrrolidone/polypyrrole (PPy/PVP) is prepared by in situ polymerization in acidic solution. The pre-requisite for an effective gain in mechanical properties is to ensure an intimate mixing of both polymers. The miscibility of PPy with PVP is assessed preliminarily using thermodynamic approaches derived from the appropriate group contribution theory which is confirmed experimentally by thermal measurements using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. All PPy/PVP blend ratios exhibit a single glass transition temperature (<i>T</i><sub><i>g</i></sub>) characteristic of their appropriate miscibility in the solid state. The morphology and thermal behavior of PPy/PVP mixtures are investigated by DSC and TGA. The potential specific interactions between PPy and PVP moieties are investigated both qualitatively and quantitatively using Fourier transform infrared spectroscopy (FTIR). The FTIR study reveals specific interactions mainly hydrogen bonding between antagonist groups of PPy and PVP. The TGA showed an improved thermal stability. The optical gap of PPy in the mixture PPy/PVP (0.8–0.5 eV) determined by UV–Visible spectrophotometry is attributed to π → π* transition, while the electric conductivity measured by the four-point method revealed their semiconducting behavior (57–3960 µS cm<sup>−1</sup>). Electrochemical impedance spectroscopy (EIS) exhibits semicircles attributed to bulk material, whose diameter decreases with increasing temperature, thus confirming the semiconducting behavior of PPy; the data obey to an Arrhenius law with an activation energy of 0.1 eV and the conduction occurs by electrons delocalization through alternating double bonds.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6565 - 6580"},"PeriodicalIF":3.5,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875393","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
Shape-stabilized polyethylene glycol/tuff composite phase change materials for efficient battery thermal management 用于高效电池热管理的形状稳定聚乙二醇/凝灰岩复合相变材料
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-13 DOI: 10.1007/s10853-025-10833-6
Hangyu Hu, Weiguang Sun, Chaoming Wang, Lei Zhang
{"title":"Shape-stabilized polyethylene glycol/tuff composite phase change materials for efficient battery thermal management","authors":"Hangyu Hu,&nbsp;Weiguang Sun,&nbsp;Chaoming Wang,&nbsp;Lei Zhang","doi":"10.1007/s10853-025-10833-6","DOIUrl":"10.1007/s10853-025-10833-6","url":null,"abstract":"<div><p>Driven by the rapid growth of the new energy industry, there is a growing demand for effective temperature control and energy consumption management of lithium-ion batteries. Phase change materials (PCMs) with enhanced thermal energy storage and conversion performances can cool batteries in a timely manner, reducing the risk of high-temperature operation of batteries and improving battery performance. In this paper, a series of polyethylene glycol/tuff composite PCMs with stable shape were prepared by vacuum impregnation method using polyethylene glycol as the organic PCM and tuff as the inorganic support matrix to prevent PCM leakage during the phase transition phase. The results show that the polyethylene glycol/tuff composite PCMs with 55 wt% polyethylene glycol loading exhibits excellent shape stability, reasonable latent heat of melting (75.1 J/g), suitable phase transition temperature (56.7 °C), good thermal reliability, enhanced thermal conductivity (0.46 W/m·K), and better thermal energy storage and release performance. In addition, compared with single cells under high discharge rate of 3C, the surface temperature of the battery can decrease from 64.6 to 44.2 °C with the utilization of 55% polyethylene glycol/tuff composite PCMs, indicating that it have great potential in thermal management of electronics.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6611 - 6627"},"PeriodicalIF":3.5,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875394","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
Creep deformation of polycrystalline quartz in controlled chemical environments 受控化学环境下多晶石英的蠕变变形
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-13 DOI: 10.1007/s10853-025-10832-7
Jian Nong Wang, Bruce E. Hobbs, Alison Ord, Jim N. Boland, Gordon Lister
{"title":"Creep deformation of polycrystalline quartz in controlled chemical environments","authors":"Jian Nong Wang,&nbsp;Bruce E. Hobbs,&nbsp;Alison Ord,&nbsp;Jim N. Boland,&nbsp;Gordon Lister","doi":"10.1007/s10853-025-10832-7","DOIUrl":"10.1007/s10853-025-10832-7","url":null,"abstract":"<div><p>Creep deformation of silicate materials in different chemical environments, is of paramount importance in practical engineering applications and geotectonic evolution. Over 100 circular cylinders of a polycrystalline quartz have been deformed at constant differential stresses σ of 100–1000 MPa, temperatures T of 600–900 °C, and a confining pressure of 1500 MPa using a soft solid medium apparatus. Oxygen, water, and hydrogen fugacities (<i>f</i>O<sub>2</sub>, <i>f</i>H<sub>2</sub>O,<i> f</i>H<sub>2</sub>) were controlled over wide ranges by a solid oxygen buffering technique. Under the experimental conditions, three different creep regimes were identified, based on mechanical data and microstructural observations: high temperature and low stress regime with a stress exponent n = 1, high temperature and high stress regime with n = 2.4, and low temperature regime with n = 3. The apparent activation energies for the n = 1 and n = 2.4 regimes were about the same (101 ~ 131 kJ/mol), but much smaller than that for the n = 3 regime (214 kJ/mol). Chemical environment had an effect on creep in all regimes. Creep rate had dependences upon <span>({(ftext{H}_{2}text{O})}^{0.41})</span>, <span>({(ftext{H}_{2}text{O})}^{0.24})</span>, and <span>({(ftext{O}_{2})}^{-0.27}{(ftext{H}_{2}text{O})}^{1.83})</span> in the n = 1, n = 2.4, and n = 3 regimes, respectively. Observations of strong grain flattening and widespread dislocation substructures led to the conclusion that deformation in all three regimes was dominated by dislocation creep processes. Specifically, it is suggested that the n = 1 behavior observed in all buffered environments may result from the operation of Harper-Dorn creep that has been demonstrated for many engineering materials. The identification of different creep regimes, especially Harper-Dorn creep, in quartz will have important implications for engineering and geotectonic applications of silicate materials.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 15","pages":"6477 - 6495"},"PeriodicalIF":3.5,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875395","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
Functionalized h-BN nanosheets with bonded interface for enhanced compressive strength of HDPE nanocomposite 具有键合界面的功能化h-BN纳米片增强HDPE纳米复合材料的抗压强度
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2025-04-12 DOI: 10.1007/s10853-025-10841-6
Kaushlendra Kumar, Ankur Chaurasia, S. P. Harsha, Avinash Parashar
{"title":"Functionalized h-BN nanosheets with bonded interface for enhanced compressive strength of HDPE nanocomposite","authors":"Kaushlendra Kumar,&nbsp;Ankur Chaurasia,&nbsp;S. P. Harsha,&nbsp;Avinash Parashar","doi":"10.1007/s10853-025-10841-6","DOIUrl":"10.1007/s10853-025-10841-6","url":null,"abstract":"<div><p>This article investigated the static and dynamic compressive strength of high-density polyethylene (HDPE) nanocomposites reinforced with functionalized h-BN nanosheets. The interface plays a crucial role in enhancing the mechanical strength of nanocomposites. The non-bonded interface is considered as a weak link in transferring mechanical load from matrix to nano-reinforcement. The aim of this article is to enhance the interfacial strength between the h-BN nanosheets and HDPE. In this work, deformation governing mechanism of nanocomposite was visualized using experimental techniques in conjunction with classical molecular dynamics-based simulations. In order to create bonded interface, h-BN nanosheets were functionalized with (<i>3-Aminopropyl</i>) <i>tri-ethoxy-silane</i> group and was later on used for reinforcing the grafted HDPE. The effect of strain rate on the compressive strength of nanocomposite was investigated using Split Hopkinson pressure bar. As compared to non-functionalized, functionalized interface efficiently transfers the shock front energy from the HDPE to h-BN nanosheets and enhances the shock resistance of the nanocomposite. Effect of strain rate on the nanocomposite was studied under two strain rates. At the lower value of strain rate (<span>(dot{varepsilon }cong 1250,{ text{s}}^{-1}))</span> the enhancement in yield strength and elastic modulus of the nanocomposite with functionalized interface is ~ 106% and ~ 155%, respectively. Similarly, at the higher strain rate (<span>(dot{varepsilon }cong 2250,{text{s}}^{-1}))</span> the improvement in yield strength and elastic modulus was ~ 154% and ~ 160%, respectively. In static compressive analysis, the effect of functionalization was not as effective as in dynamics analysis. It was observed that the compression modulus improved in nanocomposite with functionalized interface. Atomistic simulations performed in conjunction with reactive force field also capture a similar kind of trend for compressive strength of nanocomposite with functionalized and non-functional interfaces. The developed nanocomposite with enhanced strength against high strain rate loading can be employed in aerospace and automobile sectors.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 14","pages":"6121 - 6137"},"PeriodicalIF":3.5,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850955","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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