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Journal of Materiomics 2018年第3期4卷 266-275页

作者： Xiaowu Chen Dewei Ni Yanmei Kan Youlin Jiang Haijun Zhou Zhen Wang Shaoming Dong State Key Laboratory of High Performance ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Structural ceramics and Composites Engineering research center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China University of Chinese Academy of Sciences Beijing100049China

Reactive melt infiltration(RMI)is an effective method for fabrication of highly dense carbon fiber reinforced ultra-high temperature ceramic matrix composites(Cf/UHTCs).In this work,C_(f)/SiC-ZrC-ZrB_(2)composites were fabricated by infiltrating ZrSi_(2)melt into porous C_(f)/B_(4)C-C preforms,where the physical and chemical reactions involved during the RMI process were identified and *** infiltration between the inter-and intra-bundle pores was revealed,and was found to be strongly related to the pore structures of the C_(f)/B_(4)C-C *** is indicated that the inhomogeneous infiltration can be mitigated remarkably with increasing porosity and pore size of the *** effect of pore size on the RMI process was also investigated by a quantitative model,which agrees very well with the experiment *** further indicates that the inhomogeneous infiltration can also be relieved at elevated RMI ***,excessive infiltration at elevated temperature or more porous preform may cause serious erosion on interphase and fibers,leading to mechanical properties deterioration of the final composites.

关键词： Reactive melt infiltration(RMI) Inhomogeneous infiltration Pore structures Mechanical properties

Corrosion Behaviors of Disinfectants on Dental Unit Waterlines

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Journal of Wuhan University of Technology(Materials Science) 2023年第4期38卷 938-941页

作者：张玲 QIU Jiajun 邢敏钱文昊 shanghai Xuhui District Dental center Shanghai200032China State Key Laboratory of High Performance ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China

To investigate the corrosion behaviors and antibacterial effects of sodium hypochlorite(NaClO)and hydrogen peroxide silver ion(HPSI)disinfectants with different concentrations against dental unit waterlines and provide guidance and reference for the use of chemical disinfectants,polyurethane tubes were immersed in ultrapure water(control group),0.1%NaClO,0.5%NaClO,1.0%NaClO,2.5%HPSI,5.0%HPSI,and 10%HPSI solutions for 6,12,and 18 *** angles and Fourier transform infrared spectra were *** morphologies were observed using scanning electron microscopy and antibacterial activity was evaluated using Gram-positive Staphylococcus aureus(***).The results showed that sodium hypochlorite and hydrogen peroxide silver ion disinfectants presented good antibacterial activity against ***,sodium hypochlorite could cause serious damage to the water pipes where corrosion pits and cracks were observed,and increasing the concentration of sodium hypochlorite could accelerate the corrosion *** peroxide silver ion disinfectants had no obvious damage to the water ***,hydrogen peroxide silver ion disinfectants are recommended to use for controlling bacterial infection in dental unit waterlines which can reduce the damage to the water pipes.

关键词： disinfectant dental unit waterlines sodium hypochlorite hydrogen peroxide silver ion

Chemical reactions and thermal stress induced microstructure evolution in 2D-C_(f)/ZrB_(2)-SiC composites

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Journal of Materials Science & Technology 2021年第24期83卷 75-82页

作者： Bo-Wen Chen De-Wei Ni Chun-Jing Liao You-Lin Jiang Jun Lu Yu-Sheng Ding Hong-Da Wang Shao-Ming Dong State Key Laboratory of High Performance ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Structural ceramics and Composites Engineering research center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China University of Chinese Academy of Sciences Beijing 100049China Hangzhou institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Fibers degradation and matrix cracks are very common during fabrication of composites,which seriously reduces the reliability and properties of the *** this work,2 D-C_(f)/Zr B_(2)-Si C composites were fabricated by a joint processing of slurry infiltration and hot *** on thermal kinetics calculation,finite element simulation and detailed microstructure characterization,fibers degradation and matrix cracks formation mechanisms of the composites are discussed and *** impurities including SiO_(2)and ZrO_(2)react with carbon fibers,resulting in formation of Zr C,Si C particles and etching pits on the fibers,which also leads to a strong bonding between the fibers and *** the other hand,thermal expansion mismatch between the fibers and matrix gives rise to serious thermal stress in the *** thermal stress distribution and development are analyzed by finite element simulation,which is in good agreement with the cracks’formation in the *** on the revealed microstructure evolution mechanisms,a potential solution to mitigate fibers degradation and matrix cracks is put forward.

关键词： Ceramic matrix composites Carbon fiber Residual stress

Solvothermal Synthesis of Boehmite and γ-Alumina Nanorods

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Journal of Materials Science & Technology 2008年第4期24卷 637-640页

作者： Mingguo MA Yingjie ZHU Guofeng CHENG Yuehong HUANG State Key Laboratory of High Performance ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

Boehmite nanorods were synthesized by a solvothermal method using AICl3·6H2O in mixed solvents of water and aniline. The solvothermal time, heating temperature and the concentration of aniline have effects on the morphology of boehmite. γ-alumina nanorods were prepared by a simple thermal transformation of boehmite nanorods. A rational mechanism based on the oriented attachment is proposed for the formation of boehmite nanorods. The products were characterized by X-ray powder diffraction （XRD） and transmission electron microscopy （TEM）. Photoluminescence （PL） spectrum of the boehmite nanorods was also investigated.

关键词： Boehmite γ-Alumina Nanorods Solvothermal

ancient DNA unravels species identification from Laosicheng site,Hunan Province,China,and provides insights into maternal genetic history of East Asian leopards

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Zoological research 2024年第1期45卷 226-229页

作者： Ming Zhang Cai-Hui Wang Yu-Xin Zheng Qi-Gao Jiangzuo Ye-Mao Hou Peng Cao Qing-Yan Dai Ruo-Wei Yang Feng Liu Xiao-Tian Feng Lin-Heng Mo Qiao-Mei Fu China-Central Asia"the Belt and Road"Joint Laboratory on Human and Environment research Key Laboratory of Cultural Heritage Research and ConservationSchool of Culture HeritageNorthwest UniversityXi’anShaanxi 710127China shanghai Qi Zhi institute Shanghai 200232China College of Life Sciences Northwest UniversityXi’anShaanxi 710127China Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyCenter for Excellence in Life and PaleoenvironmentChinese Academy of SciencesBeijing 100044China Cultural Relics and Archaeology institute of Hunan ChangshaHunan 410083China University of the Chinese Academy of Sciences Beijing 100049China

DEAR EDITOR,The Laosicheng site in Yongshun County,Hunan Province,China,plays an important role in elucidating the animal population composition of the region prior to the middle Qing Dynasty(approximately 300 years ago).This site has yielded a substantial number of animal bones,11960 of which have been identified to the species level,serving as direct evidence of ancient animal populations(Hunan Provincial institute of Cultural Relics and Archaeology,2018).

关键词： Hunan ancient insight

Study on the diversification of origins and primary development of Chinese porcelain glazes

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Science China(Technological Sciences) 2011年第2期54卷 99-104页

作者： WU Juan ZHANG MaoLin WU JunMing LI QiJiang LI JiaZhi DENG ZeQun JIANG Xia institute of ancient Ceramic Jingdezhen Ceramics Institute Jingdezhen 333001 China shanghai institute of ceramics Chinese Academy of Sciences Shanghai 200050 China

With the support of the Origin Exploring of Chinese Civilization Projects (II) and National Natural Science Foundation of China,the close relationship among "pottery coat","kiln sweat" and Chinese proto-porcelain glaze were studied,the characteristics and the key foundation of the origin of porcelain glaze were also discussed based on the relevant research results by shanghai institute of ceramics,Chinese Academy of Sciences and Jingdezhen ceramics institute.

关键词： proto-porcelain glaze "pottery coat" "kiln sweat"

Effects of substitution of BaF_2 for GdF_3 on optical properties of dense oxyfluoride borogermanate scintillating glasses

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Journal of Rare Earths 2015年第8期33卷 800-804页

作者：孙心瑗杨庆梅谢鹏高攀吴泓澍 Department of Physics Jinggangshan University Library of Jinggangshan University research and Development center Shanghai Institute of Ceramics Chinese Academy of Sciences

Eu3＋-activated B2O3-GeO2-37Gd2O3-3Eu2O3-（15-x）GdF3-xBaF2 （0≤x≤15） scintillating glasses with the density of 6.1-6.3 g/cm3 were synthesized by a melt-quenching method. The substitution of BaF2 for expensive GdF3 in oxyfluoride borogermanate glasses slightly decreased the glass density within 3.0%. Their optical properties were characterized by transmittance, photolumines- cence （excitation and emission）, and X-ray excited luminescence （XEL） spectra in detail. The emission intensity of Eu3＋ ions increased with the elevated x values. The Eu-O covalancey nature and the local environment of Eu3＋ ions were evaluated by Judd-Ofelt results. It was found that the covalency property of Eu-O bond increased with increasing x values.

关键词： Eu3+ -actavated bomgermanate scintillating glasses energy transfer Judd-Ofelt theory X-ray excited luminescence rare earths

Superior performance and high service stability for Ge Te-based thermoelectric compounds

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National Science Review 2019年第5期6卷 944-954页

作者： Tong Xing Qingfeng Song Pengfei Qiu Qihao Zhang Xugui Xia Jincheng Liao Ruiheng Liu Hui Huang Jiong Yang Shengqiang Bai Dudi Ren Xun Shi Lidong Chen State Key Laboratory of High Performance ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Materials Genome institute Shanghai University

GeTe-based compounds have been intensively studied recently due to their superior thermoelectric performance, but their real applications are still limited so far due to the drastic volume variation that occurs during the rhombohedral–cubic phase transition, which may break the material or the material/electrode interface during ***, superior performance and high service stability for GeTe-based thermoelectric compounds are achieved by co-doping Mg and Sb into *** linear coefficient of thermal expansion before phase transition is greatly improved to match that after phase transition, yielding smooth volume variation around the phase transition ***, co-doping(Mg, Sb) in GeTe successfully tunes the carrier concentration to the optimal range and effectively suppresses the lattice thermal conductivity.A peak z T of 1.84 at 800 K and an average z T of 1.2 in 300–800 K have been achieved in ***, a Ni/Ti/Ge0.85Mg0.05Sb0.1Te thermoelectric uni-leg is fabricated and tested, showing quite good service stability even after 450 thermal cycles between 473 K and 800 *** study will accelerate the application of GeTe-based compounds for power generation in the mid-temperature range.

关键词： thermoelectrics phase transition thermal expansion service stability power generation application

Tailored deep-eutectic solvent method to enable 3D porous iron fluoride bricks for conversion-type lithium batteries

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Journal of Energy Chemistry 2023年第3期78卷 178-187,I0006页

作者： Chuanzhong Lai Keyi Chen Yongjian Zheng Junwei Meng Jiulin Hu Chilin Li CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of High Performance ceramics and Superﬁne Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China

Conversion-type fluoride cathode can provide considerable energy density for Li batteries,however its scalable and facile synthesis strategies are still ***,a novel Fe-based deep eutectic solvent composed of nitrite and methylsulfonylmethane is proposed as both the reaction medium and precursor to synthesize O-doped FeF3porous *** method is cheaper,safe,mildly operable,environmentally friendly and recyclable for non-fluorinated metal *** homogenization of charge and mass transport in cathode network effectively mitigates the volume extrusion and electrode coarsening even for the micro-sized monolithic *** Co-solvation modulated fluoride cathode delivers high reversible capacity in a wide temperature range(486 and 235 mA h g^(-1)at 25℃ and-20℃ respectively),excellent rate performance(312 mA h g^(-1)at 1000 mA g^(-1)),corresponding to an energy density as high as672.1 W h kg^(-1)under a power density of 2154.3 W kg^(-1).The successful operation of fluoride pouchcell with a capacity exceeding 450 mA h g^(-1)(even under thin Li foil and lean electrolyte conditions) indicates its potentiality of commercial application.

关键词： Ironﬂuoride Deep-Eutectic solvent Conversion cathode Li batteries Porous brick structure

Antibacterial Activity of Silicate Bioceramics

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Journal of Wuhan University of Technology(Materials Science) 2011年第2期26卷 227-231页

作者：扈盛常江 Department of Physical Education Huazhong Normal University Biomaterials and Tissue Engineering research center Shanghai Institute of Ceramics

Four kinds of pure silicate ceramic particles,CaSiO3,Ca3SiO5,bredigite and akermanite were prepared and their bactericidal effects were systematically *** phase compositions of these silicate ceramics were characterized by *** ionic concentration measurement revealed that the Calcium （Ca） ion concentration were relatively higher in Ca3SiO5 and bredigite,and much lower in CaSiO3 and ***,the pH values of the four silicate ceramics extracts showed a positive correlation with the particle ***,by decreasing the particle size,higher Ca ion concentrations can be achieved,leading to the increase of aqueous pH value as *** summary,all of the four silicate ceramics tested in our study showed antibacterial effect in a dose-dependent ***,the order of their antibacterial activity against *** from strong to weak is Ca3SiO5,bredigite,CaSiO3 and akermanite.

关键词： silicate ceramics antibacterial activity specific surface area aqueous pH ionic concentration