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Journal of Materiomics 2021年第6期7卷 1335-1343页

作者： Yong Yang Xin Cao Lifen Shi Zhengyi Zhang Pingping Wang Jinwei Li Yangshan Sun Shuyong Chen Tianhe Wang Liyun Ma Shou Peng State Key Laboratory of Advanced Technology for Float Glass Bengbu233000China Silica-based Materials Laboratory of Anhui Province Bengbu233000China (CNBM)Bengbu Design&Research Institute for Glass Industry Co. LtdBengbu233000China School of Mechanical Engineering Hefei University of TechnologyHefei230009China

The Fukushima nuclear accident in Japan on March 11,2011,produced large amounts of Cs-polluted soil which must be controlled to prevent the spread of hazardous Cs into the *** this paper,the effects of heat treatment on the structure and properties of Cs-containing glass-ceramics,as a simulated nuclear waste form,were systematically *** atoms are chemically bonded in the pollucite structure,and the amorphous phase further encapsulates the pollucite crystals in the glassceramics,thus providing an extra protective layer for the immobilized *** analysis,Raman and FT-IR studies on the glass-ceramics synergistically indicated that the optimum crystallization temperature for pollucite is around 1000℃.The pollucite is predominantly the main crystalline phase with a narrow crystal size distribution between 0.5 and 2 *** leaching test results show that the leaching rate of Cs was very low(3.0×10^(-3) g/(m^(2)·d)).The study offers a practical method for immobilizing Cs in pollucite-base ***,the experimentally obtained data may provide some important references for converting Cs-polluted soil into pollucite-base glass-ceramics waste form.

关键词： Metakaolin Cesium Pollucite glass-ceramics Thermal evolution

Structure, mechanical properties, and diffusion kinetics of chemical strengthening ultra-thin aluminosilicate glass by two-step method

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Ceramics International 2025年

作者： Li, Kai Cai, Yanbao Xu, Fei Tian, Peijing Yuan, Jian Peng, Zhigang State Key Laboratory of Advanced Glass Materials Wuhan430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Shahe Research Institute of Glass Technology Xingtai054100 China

Chemically strengthening high aluminosilicate glass constitutes a vital component in electronic display devices, and two-step strengthening can further enhance the mechanical properties and stability of conventional chemically strengthening glass. The influence of temperature and time factors on the structure, mechanical properties, and diffusion kinetics of the ultra-thin aluminosilicate glass during the two-step chemical strengthening process was investigated through differential scanning calorimeter (DSC), X-ray fluorescence spectrometer (XRF), Raman spectroscopy, electron probe micro-analyzer (EPMA), and other performance tests. The results demonstrate that as depth increases, the glass structure transitions from loose to more compact, and the extension of the exchange time in the second step will lead to the occurrence of structural relaxation in the glass. The calculation results of diffusion coefficients and activation energy indicate that the diffusion coefficient exhibits three distinct stages as depth increases, the activation energy first decreases and then increases with increasing depth. This may be related to changes in glass structure and concentration gradients. As the temperature for the second step of chemical strengthening increases, both compressive stress (CS) and depth of layer (DOL) exhibit a trend of first increasing and then decreasing. An extension in time leads to a decline in CS but an increase in DOL, which is a consequence of the combined effects of diffusion and stress relaxation. The trends in Vickers hardness and four-point bending strength are identical to that of CS. Although the CS achieved through the two-step method is slightly lower than that obtained by the one-step method, the two-step strengthening glass exhibits superior mechanical properties due to the inward shift of the potassium ion peak and a higher DOL. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Activation energy

Atomic Insight into the Molten Structure and Viscosity of Polysilicates Under High Temperature

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SSRN 2023年

作者： Shi, Zuhao Yue, Jiayu Liu, Zhaohui Lu, Heyu Chen, Wei Li, Neng State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Float Glass Technology CNBM Bengbu Design & Research Institute for Glass Industry Co. Ltd Bengbu233010 China School of Materials Science and Engineering Zhengzhou University Henan Zhengzhou450001 China

Unveiling the process of mass transfer and molten structure of silicates at high temperature is challenges. In this work, the molten structure and viscosity of polysilicates, including hexagonal aluminosilicates SiO2-Na2O-Al2O3-K2O-CaO-FeOx, under high temperature are investigated by well-defined molecular dynamics. The results show that the influence of interstitial cations on mobility predominantly stems from the contraction or dissociation of the silicate lattice structure. Additionally, the type and concentration of the mesh-forming cations significantly impact the compactness of the network. This work paves way to the understanding of the viscosity of polysilicates under high-temperatures, and provides atomic-level insights on the intricate interactions between polycations and the silicate networks. © 2023, The Authors. All rights reserved.

关键词： Viscosity

Reaching Medium Entropy Oxides with Tunable Photoelectrical Properties Based on Cluster-Plus-Atom Model: A Case Study of Co-Ni-Cu-Zn-O System with Rocksalt Structure

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SSRN 2024年

作者： Sun, Hao Liu, Shimin Yu, Jingyi Zheng, Cong Li, Zhiqiang Yao, Tingting Wang, Hualin Jiang, Weiwei Zou, Cunlei Zhang, Jiliang Dong, Chuang Wang, Nan Liu, Chaoqian Ding, Wanyu Zhang, Zhihua Engineering Research Center of Optoelectronic Materials and Devices School of Materials Science and Engineering Dalian Jiaotong University Dalian116028 China State Key Laboratory of Advanced Technology for Float Glass CNBM Research Institute for Advanced Glass Materials Group Co. Ltd Bengbu233000 China

Medium entropy oxides (MEOs) as a new type of materials have shown great promise for photoelectrical applications, but the multi-component nature of their compositions makes it difficult to synthesize single-phase MEOs, especially when the cations are not equimolar. In this paper, we have designed and synthesized a series of non-equimolar Co-Ni-Cu-Zn-O single-phase rocksalt structure MEOs via cluster-plus-glue-atom model, thermodynamic calculation and solid-state reaction method. Results indicated that Co21Ni43Cu16Zn16O96 and Co17Ni47Cu16Zn16O96 have the lowest single-phase formation temperature (850 °C). The further variation of Co content will increase the single-phase formation temperature (900-1200 °C) which is closely related to the increased Gibbs free energy and average cation-size difference (δ). The decrease of Co content can increase the energy band gap from 1.52 eV to 1.93 eV and simultaneously increase the electrical resistivity of Co-Ni-Cu-Zn-O system. The proposed method may comprehensively guide the design and synthesis of other single-phase MEOs beside Co-Ni-Cu-Zn-O system. © 2024, The Authors. All rights reserved.

关键词： Free energy

The Aging Effects of Ultraviolet Irradiation on the Optical Properties of glass 11

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The Aging Effects of Ultraviolet Irradiation on the Optical ...

11th Annual International Conference on Material Science and Environmental Engineering, MSEE 2023

作者： Han, Huimin Liu, Yueyue Wang, Qingwei Luo, Lida State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University Shanghai201620 China Engineering Research Center of Advanced Glass Manufacturing Technology Ministry of Education Shanghai201620 China Institute of Functional Materials Donghua University Shanghai201620 China

glass is known for its high mechanical strength, resistance to high temperatures, corrosion resistance, excellent transparency, thermal stability, and good electrical insulation properties, making it widely used in various fields such as construction, household, and automotive applications. In this study, three types of glass samples were exposed to three different environments: outdoor, ultraviolet (UV) irradiation, and UV irradiation in water vapor. The influence of these different environments on light transmittance and surface morphology was investigated using UV-visible-near infrared spectroscopy and scanning electron microscopy. The experimental results indicate that lead-containing glass exhibits excellent resistance to UV irradiation, sodium-calcium glass samples exhibit significant variations in transmittance in the UV and infrared regions, possibly related to iron content, and high borosilicate glass samples show a noticeable decrease in transmittance in the infrared region. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Morphology

Preparation and Properties of Alumina Fiber Reinforced LTCC Ceramic Coatings 12

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Preparation and Properties of Alumina Fiber Reinforced LTCC ...

12th Annual International Conference on Material Science and Environmental Engineering, MSEE 2024

作者： Luo, Lida Su, Qi Han, Huimin Wang, Qingwei State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University Shanghai201620 China Engineering Research Center of Advanced Glass Manufacturing Technology Ministry of Education Shanghai201620 China Institute of Functional Materials Donghua University Shanghai201620 China

Low temperature co-fired ceramic technology (LTCC) uses multi-layer laminated firing process to realize the high density packaging of complex circuits and passive devices, which provides a new solution for the miniaturization and high integration of passive devices, and plays an important role in national defense, communication and other fields. As the bearing structure of the functional circuit, LTCC substrate plays the dual role of structural support and electrical shielding, which is the key to the development of LTCC technology. In this study, the CaO-MgO-B2O3-SiO2 (CMBS) system, identified for its significant developmental prospects, is chosen as the subject of investigation and the influence of Al2O3 fiber reinforcement on the mechanical and dielectric properties of LTCC substrate materials is studied. The results show that the substrate can stably co-sinter with Ag. With the increase in Al2O3 ceramic fiber content, both the elastic modulus and microhardness of the substrate increase overall. The dielectric constant ranges from 4 to 4.65, exhibiting an initial increase followed by a decrease with the addition of Al2O3 ceramic fibers, conforming to the requirements of low dielectric constant and low dielectric loss, meeting the requirements of low dielectric constant and low dielectric loss. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Ceramic coatings

Brittle to Ductile Transitions in Magnesium-Aluminum Silicate glass: A Molecular Dynamic Simulation

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SSRN 2023年

作者： Yue, Jiayu Shi, Zuhao Wang, Hao Li, Neng State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Float Glass Technology CNBM Bengbu Design & Research Institute for Glass Industry Co. Ltd Bengbu233010 China School of Materials Science and Engineering Zhengzhou University Henan Zhengzhou450001 China

Alkaline earth aluminosilicate glasses are pivotal in numerous high-end industries and glass applications. In magnesium-aluminum silicate glass systems, variations in magnesium concentration usually exhibit notable impacts on macroscopic elastic properties. Employing molecular dynamics simulations, the fracture behavior of magnesium-aluminum silicate glass under uniaxial stretching was observed at the microscopic scale. The research reveals a non-linear correlation between magnesium concentration and both maximum fracture stress and glass brittleness. Notably, magnesium oxide concentration influences whether the glass fractures brittlely or ductility, while magnesium bias occurs at the ductile fracture and reduced aluminum content occurs at both fractures. From this we could predict the onset of glass fracture failure by changes in the distribution of magnesium and aluminum. © 2023, The Authors. All rights reserved.

关键词： Molecular dynamics

Network Structure and Chemical Durability of Non-alkali Aluminoborosilicate glasses Containing ZnO

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Journal of Wuhan University of technology(Materials Science) 2020年第2期35卷 377-383页

作者： DU Rui HAN Jianjun CAO Xin LIU Chao WANG Jing State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China State Key Labo-ratory of Advanced Technology for Float Glass (CNBM)Bengbu Design&Research Institute for Glass Industry Co.Ltd.Bengbu 233018China

The structure and chemical durability of non-alkali aluminoborosilicate glasses with various contents of ZnO were *** the replacement of MgO by ZnO increases from 0 to 3.2mol%,the average number of bridge oxygen per tetrahedron (BO/T) as a measure of network connectivity increases from 2.84 to 3.04,and the chemical durability *** weight loss ratio (WLR) of glass etched in 10vol% HF (20 ℃,20 min) solution decreased from 4.809 to 4.509,and in 5wt% NaOH (95 ℃,6 h) solution decreased from 1.201 to *** replacement of MgO by ZnO further increased to 6.4mol%,the value of BO/T decreased to 3.04 instead,and thus the chemical durability *** WLR of HF-acid and NaOH-alkali corrosion increased to 6.683 and 1.994,*** chemical durability shows strongly dependent on the network connectivity and exhibits mixed intermediate effects during the replacement of MgO by ZnO.

关键词： HF-acid corrosion NaOH-resistance network connectivity Zn/Mg effect

Image Classification with Deep Reinforcement Active Learning

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arXiv

arXiv 2024年

作者： Jiu, Mingyuan Song, Xuguang Sahbi, Hichem Li, Shupan Chen, Yan Guo, Wei Guo, Lihua Xu, Mingliang School of Computer and Artificial Intelligence Zhengzhou University China Engineering Research Center of Intelligent Swarm Systems Ministry of Education China National Supercomputing Center Zhengzhou China Sorbonne University CNRS LIP6 ParisF-75005 France Luoyang float glass group Co. Ltd State Key Laboratory of Advanced Technology for Float Glass China

Deep learning is currently reaching outstanding performances on different tasks, including image classification, especially when using large neural networks. The success of these models is tributary to the availability of large collections of labeled training data. In many real-world scenarios, labeled data are scarce, and their hand-labeling is time, effort and cost demanding. Active learning is an alternative paradigm that mitigates the effort in hand-labeling data, where only a small fraction is iteratively selected from a large pool of unlabeled data, and annotated by an expert (a.k.a oracle), and eventually used to update the learning models. However, existing active learning solutions are dependent on handcrafted strategies that may fail in highly variable learning environments (datasets, scenarios, etc). In this work, we devise an adaptive active learning method based on Markov Decision Process (MDP). Our framework leverages deep reinforcement learning and active learning together with a Deep Deterministic Policy Gradient (DDPG) in order to dynamically adapt sample selection strategies to the oracle’s feedback and the learning environment. Extensive experiments conducted on three different image classification benchmarks show superior performances against several existing active learning strategies. Copyright © 2024, The Authors. All rights reserved.

关键词： Deep reinforcement learning

Hydrothermal Modification of Calcined Diatomite with Cao: Effect of Naoh Pretreatment

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SSRN 2023年

作者： Guo, Zhengzheng Ren, Zijie Gao, Huimin Guan, Junfang Li, Peiyue He, Yuhao Chen, Zhijie Hubei Key Laboratory of Mineral Resources Processing and Environment School of Resources and Environmental Engineering Wuhan University of Technology 122 Luoshi Road Wuhan430070 China State Key Laboratory of Advanced Technology for Float Glass China Centre for Technology in Water and Wastewater School of Civil and Environmental Engineering University of Technology SydneyNSW2007 Australia

The development and application of high-adsorptive calcined diatomite (C-D) can provide a cost-effective solution for the filter aid industry, which remains a challenge in this field. Herein, an alkali (NaOH) pretreatment was introduced before the calcium oxide (CaO)-mediated hydrothermal activation of C-D. The adsorption performance of the alkali-modified samples (modified calcined diatomite: M-D) was significantly improved. The methylene blue trihydrate (MB) adsorption capacity of the optimal M-D sample reached 45.76 mg/g, which was 2.73 times higher than that of the sample prepared without the alkali treatment. The substantial enhancement in adsorption performance of M-D was mainly attributed to the abundant SiO32- species which was primarily generated during the NaOH pretreatment. By regulating the amount of NaOH, it was feasible to control the morphology/nanostructure and composition of the final materials. This work paves the way to the value-added application of natural diatomite resources via providing an efficient modification method to optimize the properties of C-D. © 2023, The Authors. All rights reserved.

关键词： Sodium hydroxide