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Glass-Ceramics with High Strength and High Transmittance Obtained by Multi-Factor Controlling

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 551-560页

作者：胡云坤 RAO Yu WANG Mingzhong XU Yinsheng XIA Mengling tao haizheng 陆平 School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Xianning CSG Photovoltaic Glass Co. Ltd.Xianning 437100China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Jincheng Optical-mechanical Industry Research Institute Jincheng 048000China

The presence of Li_(2)Si_(2)O_(5) and LiAlSi_(4)O_(10) could effectively improve the elastic modulus and transmittance of lithium disilicate(LD)*** synergistically modulation of the crystal content and grain size,we obtained high strength and high transmittance of LD *** optimal sample had a high transmittance of 90.3%,the hardness was 7.72 GPa,the fracture toughness was 1.07 MPa·m^(1/2),and the elastic modulus was 103.1 GPa.

关键词： lithium disilicate glass-ceramics transmittance mechanical properties

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新玻璃家族——金属有机骨架(MOF)玻璃

硅酸盐学报 2024年第8期52卷 2543-2544页

作者：乔昂陶海征邱建荣武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 浙江大学光电科学与工程学院杭州310027

在历史的长河中,玻璃以其独特的魅力和广泛的应用,深深地烙印在人类的生活、生产和社会发展中。它不仅仅是一种简单的物质,更是科技进步和文明发展的推动者和见证者。从17世纪开始,玻璃的大规模应用极大地推动了建筑、交通、光学、化学... 详细信息

在历史的长河中,玻璃以其独特的魅力和广泛的应用,深深地烙印在人类的生活、生产和社会发展中。它不仅仅是一种简单的物质,更是科技进步和文明发展的推动者和见证者。从17世纪开始,玻璃的大规模应用极大地推动了建筑、交通、光学、化学和天文等领域的快速发展。玻璃作为非晶态物质,考虑到其热力学非平衡态的本质,“液态为什么会形成玻璃”这一基础科学问题至今未得到充分理解。因此,“玻璃的本质”被Science杂志评选为125个最具挑战性的科学问题之一;凝聚态物理学家、诺贝尔奖得主Philip ***教授也指出“玻璃和玻璃转变的本质是凝聚态物理中最深刻也是最有趣的未解难题”。

关键词：玻璃金属有机框架制备与性能

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含锌钇铝硅酸盐玻璃的晶化特征和力学性能

硅酸盐学报 2024年第8期52卷 2495-2501页

作者：郑庆双陈胜林乔昂王觅堂陶海征武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 上海理工大学材料与化学学院上海200093

因具有与碳化硅陶瓷相匹配的膨胀系数和良好的物化性能,钇铝硅酸盐(YAS)玻璃和玻璃陶瓷广受关注。为进一步提升YAS玻璃陶瓷的力学性能,以22Y_(2)O_(3)·19Al_(2)O_(3)·59SiO_(2)玻璃为基础,基于n(ZnO):n(Al_(2)O_(3))=2:1摩尔比,利用Z... 详细信息

因具有与碳化硅陶瓷相匹配的膨胀系数和良好的物化性能,钇铝硅酸盐(YAS)玻璃和玻璃陶瓷广受关注。为进一步提升YAS玻璃陶瓷的力学性能,以22Y_(2)O_(3)·19Al_(2)O_(3)·59SiO_(2)玻璃为基础,基于n(ZnO):n(Al_(2)O_(3))=2:1摩尔比,利用Zn O逐步替换Al_(2)O_(3),探索了系列含锌YAS玻璃的晶化特征和力学性能。通过选择合适的热处理工艺,制备了系列玻璃陶瓷。结果发现:ZnO的引入具有晶粒细化作用,随着ZnO含量的增加,析出晶粒的尺寸逐渐减小;通过合适的热处理,获得了最大断裂韧性为1.92 MPa·m^(0.5)的含锌YAS玻璃陶瓷;与原始无锌YAS玻璃陶瓷(1.16 MPa·m^(0.5))相比,提升了65%。上述工作为高性能玻璃陶瓷的研制提供了一种新的思路。

关键词：钇铝硅酸盐玻璃陶瓷断裂韧性硬度

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Fe-金属有机框架玻璃的形成过程与机理

硅酸盐学报 2024年第8期52卷 2553-2558页

作者：刘鑫宇郭超慧陶海征乔昂武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 中山市武汉理工大学先进工程技术研究院广东中山528400

不同的中心金属离子能够赋予金属有机框架材料(MOFs)不同的性能,众多Fe基MOF材料具有优异的电、磁性能。但由于Fe元素存在变价,且Fe—N配位键难以形成,可熔融成玻Fe-MOF材料鲜有报道。使用无溶剂法成功制备Fe_(3)(C_(3)H_(2)N_(2))_6(C_... 详细信息

不同的中心金属离子能够赋予金属有机框架材料(MOFs)不同的性能,众多Fe基MOF材料具有优异的电、磁性能。但由于Fe元素存在变价,且Fe—N配位键难以形成,可熔融成玻Fe-MOF材料鲜有报道。使用无溶剂法成功制备Fe_(3)(C_(3)H_(2)N_(2))_6(C_(3)H_(4)N_(2))_(2)晶体,命名为FCIR,即Fe-MOF晶体,并且利用熔融淬冷法制成了Fe-MOF玻璃,并探究该Fe-MOF晶体在加热过程中的形态和结构演变,以及其玻璃态形成的机理。结果表明:相较于以Zn为中心离子的可熔融MOF材料,Fe离子对晶体加热过程中的熔融过程和结构演变会产生较大影响;FCIR晶体熔融淬冷后发生近程序结构变化,即由晶态时Fe离子与咪唑的6配位八面体脱去2个单配位咪唑转变为玻璃态的4配位四面体。

关键词：金属有机框架玻璃形成熔融结构变化

Uncovering the Phase Transition of Berlinite (α-AlPO_(4)) under High Pressure:Insights from First-principles Calculations

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Journal of Wuhan University of Technology(Materials Science) 2021年第2期36卷 248-254页

作者： LI Neng HU Hai GUO Fei tao haizheng State Key Laboratory of Optical Fiber and Cable Manufacture Technology(Yangtze Optical Fiber and Cable Joint Stock Limited Company) Wuhan 430073China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

We investigated the mechanism of crystalline-to-amorphous phase transition(CAPT)for amorphous berlinite(a-AlPO_(4))under high pressure using ab initio constant-pressure *** results show that the pressure to the change in phase transition takes place at around 20 GPa,which is inconsistent with the previous results of around 15 *** confirm the feasibility of our model,the calculated X-ray powder diffraction for crystal berlinite is concordant with the standard PDF *** assessing a full spectrum of properties including atomic structure,bonding characteristics,electron density of states and real-space pair distribution function at each pressure,we reveal the details of phase ***,all the information from our present results elucidates that Al-O bonds play an irreplaceable role during the process of phase transition to uncover the structural and electronic properties of ***,our work substantiates that it is essential to utilize a wide range of changes in order to provide a comprehensive understanding on the nature of the CAPT in other inorganic oxides.

关键词： aluminophosphate atomic and electronic structures phase transition ab initio calculation

Thermal Behavior and Lithium Ion Conductivity of L_2O-Al_2O_3-TiO_2-SiO_2-P_2O_5 Glass-ceramics

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Journal of Wuhan University of Technology(Materials Science) 2012年第1期27卷 67-72页

作者： CHEN Hongping tao haizheng WU Qide ZHAO Xiujian State Key Laboratory of Silicate Materials for Architecture(Wuhan University of Technology) Wuhan 430070China

A lithium ion conductive solid electrolyte, L20-AI203-TiO2-SiO2-P20s glass with NASICON- type structure have been synthesized and transformed into glass-ceramic through thermal-treatment at various temperatures from 700 to 1 000 ~C for 12 h. The differential scanning calorimetry （DSC）, X-ray diffraction （XRD）, scanning electron microscopy （SEM） and complex impedance techniques were employed to characterize the samples. The experimental results indicated that the capability of glass forming in this system is superior to that of L20-A1203-TiO2-PzO~. The glass has an amorphous structure and resultant glass-ceramic mainly consisting of LiTi2（PO4）3 phases. Impurity phases AIPO4, TiO2, TiP207 and unidentified phase were observed. With the enhanced heat-treatment temperature, grain grew gradually and lithium ion conductivity of glass-ceramics increased accordingly, the related impedance semicircles were depressed gradually and even disappeared, which could be analytically explained by the coordinate action of the ＇Constant phase element＇（CPE） model and the ＇Concept of Mismatch and Relaxation＇ model （CMR）. When the sample is devitrified at 1 000 ~C, the maximum room temperature lithium ion conductivity comes up to 4.1 x 10-4 S/cm, which is suitable for the application as an electrolyte of all-solid-state lithium batteries.

关键词： inorganic solid electrolyte glass-ceramic L2O-A12O3-TiO2-SiO2-P2O5 system LiTi2(PO4)3phase

A Low Cost and Facile Preparation of Hydrophobic Silica Films and Powders by a Solution-based Process

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Journal of Wuhan University of Technology(Materials Science) 2015年第3期30卷 489-493页

作者：田甜 tao haizheng 肖静 XU Xinyi An Jiming State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology) Editorial Department Wuhan University of Technology Center for Material Research and Testing Wuhan University of Technology

Super-hydrophobic surfaces with water contact angle （WCA） higher than 150~ generated a lot of interests both in academic and in industry because of their self-cleaning functionality. Emphasis was given to the effect of pH value on the hydrophobic behavior of the obtained films or powders. At first, SiC）2 sols were prepared by diluted ammonia. We found that following the increase of pH value of sol from 8 to 9, WCAs of the obtained films increased from 121.8~ to 131.8~. Following the continued increase of the pH value of sol, precipitates began to appear and smooth film could not be obtained. The WCAs of the obtained powders could reach 121.7~, and through modifying by TMCS could further increase to as high as 165~ and the water sliding angle （WSA） was 2~. The results of SEM indicate that the hydrophobic properties of the powders without modifying by TMCS should be originated from the formation of nano/micron binary structure, i e, a micron- scale diameter and a nano-scale surface roughness. In this work we provide a better solution to fabricate super- hydrophobic silica coating surface with a simple method at low cost.

关键词： sol-gel process TMCS super-hydrophobic powders nano/mieron agglomerates

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ZnO对尖晶石微晶玻璃的析晶和性能影响

硅酸盐通报 2024年第9期43卷 3446-3454页

作者：陈考翔王明忠饶宇崔佳琳陶海征陆平武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070

尖晶石微晶玻璃不仅具有良好的透过性能,而且具有优异的机械性能,在盖板玻璃、航空航天、军事、牙科和光学器件领域有着重要的应用。本文研究了ZnO含量对MgO-Al_(2)O_(3)-SiO_(2)(MAS)玻璃析晶和性能的影响。结果表明,随着ZnO含量的增加... 详细信息

尖晶石微晶玻璃不仅具有良好的透过性能,而且具有优异的机械性能,在盖板玻璃、航空航天、军事、牙科和光学器件领域有着重要的应用。本文研究了ZnO含量对MgO-Al_(2)O_(3)-SiO_(2)(MAS)玻璃析晶和性能的影响。结果表明,随着ZnO含量的增加,玻璃化转变温度逐渐下降,析晶峰温度也向低温区移动,而且析晶峰逐渐增强,说明ZnO的加入能够促进析晶。通过拉曼光谱对玻璃的结构进行分析,发现随着ZnO含量增加,玻璃网络中的Q^(3)、Q^(3)(Zr)以及Q^(4)单元逐渐减少,Q^(2)单元逐渐增多,说明玻璃网络结构变得疏松,有利于晶体生长。ZnO的加入提高了热处理后样品的硬度,在920℃热处理2 h时ZnO含量为7.5%(摩尔分数)的样品硬度达到最大值,为8.13 GPa。同时,ZnO的加入还改善了高温热处理样品的透过率,样品在可见光范围内的平均透过率大于80%,具有良好的透光性。

关键词：微晶玻璃 ZnO 尖晶石析晶透光性硬度

Upconversion luminescence properties of Er^(3+) doped GeS_2-Ga_2S_3-KCl chalcohalide glasses

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Rare Metals 2011年第1期30卷 18-21页

作者： ZHANG Jihong tao haizheng ZHAO Xiujian Key Laboratory of Silicate Materials Science and Engineering（Ministry of Education） Wuhan University of TechnologyWuhan 430070China

Er^3＋ ions doped chalcohalide glasses with the composition of 56GeS2-24Ga2S3-20KCl were fabricated by a melt-quenching *** 800 nm laser excitation,strong green emissions centered at 525 nm and 550 nm and weak red emission centered at 660 nm were observed,which were assigned to ^2H11/2→^4I15/2,^4S3/2→^4I15/2,and ^4F9/2→^4I15/2 transitions,*** intensity reached maximum when the Er^3＋ ions concentration was 0.1 mol%.The possible upconversion luminescence mechanism was proposed from the discussion on the above results as well as the results of lifetimes of the metastable ^4I13/2 level and local environment of Er^3＋ *** is found that chalcohalide glass can be good host materials for upconversion luminescence.

关键词： amorphous materials glass rare earths luminescence doping