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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1269-1277页

作者： ZHOU Yang WU Jianfeng TIAN Kezhong xu xiaohong MA Sitong LIU Shaoheng State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

SiC composite ceramics for solar absorber and storage integration are new concentrating solar power *** composite ceramics for solar absorber and storage integration were fabricated using SiC,black corundum and kaolin as the raw materials,Co_(2)O_(3)as the additive via pressureless graphite-buried sintering method in this *** of Co_(2)O_(3)on the microstructure and properties of SiC composite ceramics for solar absorber and storage integration were *** results indicate that sample D2(5wt%Co_(2)O_(3))sintered at 1480℃exhibits optimal performances for 119.91 MPa bending strength,93%solar absorption,981.5 kJ/kg(25-800℃)thermal storage *** weight gain ratio is 12.58 mg/cm2after 100 h oxidation at 1000℃.The Co_(2)O_(3)can decrease the liquid phase formation temperature and reduce the viscosity of liquid phase during *** liquid with low viscosity not only promotes the elimination of pores to achieve densification,but also increases bending strength,solar absorption,thermal storage density and oxidation resistance.A dense SiO_(2) layer was formed on the surface of SiC after 100 h oxidation at 1000℃,which protects the sample from further ***,excessive Co_(2)O_(3)will make the microstructure loose,which is disadvantageous to the performances of samples.

关键词： SiC composite ceramics Co_(2)O_(3) microstructure solar absorption thermal storage density

Research and Development of Cadmium Sulphoselenide Red Pigment

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Journal of Wuhan University of Technology(Materials Science) 2015年第6期30卷 1247-1254页

作者：吴建锋 LI Kun xu xiaohong ZHANG Yaxiang xu Xiaoyang LAO Xinbin State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology School of Materials Science and Engineering Wuhan University of Technology

Cadmium sulphoselenide was synthesized continuous substitution solid solution and the only known pigment to yield bright red color on ceramic decoration. Encapsulated cadmium sulphoselenide pigments could yield abundant hues from yellow to red with high opacity at high temperature. The color generation has a linear function relation with the substitution rate. The encapsulation formation process of zirconium silicate encapsulated cadmium sulphoselenide was shown. Insuffi cient encapsulation effi ciency and potential hazard to human and environment had limited the industrial application of cadmium sulphoselenide red pigment. Ink-jet printing decoration required fi ne size cadmium sulphoselenide red pigment on ceramic decoration. The review mainly focused on the synthesis techniques and industrial application of cadmium sulphoselenide red pigment.

关键词： cadmium sulphoselenide red pigment encapsulation effi ciency potential hazard industrial application

Effect of Gasoline Property on Formation of Intake Valve and Combustion Chamber Deposits

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China Petroleum Processing & Petrochemical Technology 2011年第3期13卷 27-32页

作者： xu xiaohong Cai Jin Liu Quanshan xue Qunji Lanzhou Institute Chemical Physics Chinese Academy of Sciences Lanzhou 730000 PetroChina Lanzhou Lubricating Oil R＆D Institute Lanzhou 730060 Graduate University of Chinese Academy of Scienees Beijing 100039

The cleanliness of gasoline is related to its components and *** commercial gasoline builds up deposits on the engine's injector,intake valve and combustion chamber,which can significantly lower the engine performance and influence exhaust gas *** this study,the intake valve deposits (IVD) and combustion chamber deposits (CCD) produced from combustion of fuel containing 21 v%—42 v% of aromatics and 8 v%—31 v% of olefins have been studied using Ford engine tests,and the characteristics of deposits were studied by IR spectroscopy,TGA and elemental analysis *** test results have shown that deposit formation depends on the fuel composition,especially the aromatic content in the *** is also observed that there are differences in the values of IVD and CCD measured by IR spectrometry and elemental analyses.

关键词： gasoline intake valve deposits combustion chamber deposits

Diluted magnetic oxides

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Science China(Physics,Mechanics & Astronomy) 2013年第1期56卷 111-123页

作者： LI XiaoLi QI ShiFei JIANG FengXian QUAN ZhiYong xu xiaohong School of Chemistry and Materials Science Key Laboratory of Magnetic Molecules and Magnetic Information MaterialsMinistry of EducationShanxi Normal University

In this review,we review the progress of research on ZnO-and In2O3-based diluted magnetic oxides(DMOs).Firstly,we present the preparation and characterization of *** former includes the preparation methods and conditions,and the latter includes the characterization techniques for measuring ***,we introduce the magnetic and transport properties of DMOs,as well as the relationship between ***,the origin and mechanism of the ferromagnetism are ***,we introduce other related work,including computational work and pertinent heterogeneous structures,such as multilayers and magnetic tunnel ***,we provide an overview and outlook for DMOs.

关键词： diluted magnetic oxide preparation magnetism transport

Quantum anomalous Hall effect and giant Rashba spin-orbit splitting in graphene system co-doped with boron and 5d transition-metal atoms

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Frontiers of physics 2018年第5期13卷 79-86页

作者： Xinzhou Deng Hualing Yang Shifei Qi xiaohong xu Zhenhua Qiao CQD Hefei National Laboratory for Physical Sciences at Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Hefei 230026 China CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics and Department of Physics University of Science and Technology of China Hefei 230026 China School of Chemistry and Materials Science Shanxi Normal University Linfen 041004 China

Quantum anomalous Hall effect （QAHE） is a fundamental quantum transport phenomenon in con- densed matter physics. Until now, the QAHE has only been experimentally realized for Cr/V-doped （Bi, Sb）2We3 but at an extremely low observational temperature, thereby limiting its potential appli- cation in dissipationless quantum electronics. By employing first-principles calculations, we study the electronic structures of graphene co-doped with 5d transition metal and boron atoms based on a com- pensated n-p co-doping scheme. Our findings are as follows： i） The electrostatic attraction between the n- and p-type dopants effectively enhances the adsorption of metal adatoms and suppresses their undesirable clustering, ii） Hf-B and Os-B co-doped graphene systems can establish long-range ferro- magnetic order and open larger nontrivial band gaps because of the stronger spin-orbit coupling with the non-vanishing Berry curvatures to host the high-temperature QAHE. iii） The calculated Rashba splitting energies in Re-B and Pt-B co-doped graphene systems can reach up to 158 and 85 meV, re- spectively, which are several orders of magnitude higher than the reported intrinsic spin-orbit coupling strength.

关键词： graphene quantum anomalous Hall effect spin-orbit coupling

Preparation and Thermal Shock Resistance of Mullite Ceramics for High Temperature Solar Thermal Storage

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Journal of Wuhan University of Technology(Materials Science) 2023年第4期38卷 743-752页

作者：吴建锋章真宇 xu xiaohong MA Sitong LI Peixian SHI Xingxing State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan430070China

Mullite thermal storage ceramics were prepared by low-cost calcined bauxite and *** phase composition,microstructure,high temperature resistance and thermophysical properties were characterized by modern testing *** experimental results indicate that sample A3(bauxite/kaolin ratio of 5:5)sintered at 1620℃has the optimum comprehensive properties,with bulk density of 2.83 g·cm^(-3)and bending strength of 155.44 *** 30 thermal shocks(1000℃-room temperature,air cooling),the bending strength of sample A3 increases to 166.15 MPa with an enhancement rate of 6.89%,the corresponding thermal conductivity and specific heat capacity are 3.54 W·(m·K)^(-1)and 1.39 kJ·(kg·K)^(-1)at 800℃,and the thermal storage density is 1096 kJ·kg^(-1)(25-800 mullite ceramics;sintering properties;high-temperature thermal storage;thermal shock resistance).Mullite forms a dense and continuous interlaced network microstructure,which endows the samples high thermal storage density and high bending strength,but the decrease of bauxite/kaolin ratio leads to the decrease of mullite content,which reduces the properties of the samples.

关键词： mullite ceramics sintering properties high-temperature thermal storage thermal shock resistance

Exchange-coupled nanocomposites with novel microstructure and enhanced remanence by a new approach

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Journal of Materials Science & Technology 2021年第20期79卷 118-122页

作者： Baoru Bian Li Jin Qiang Zheng Fang Wang xiaohong xu Juan Du CAS Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Material Technology and EngineeringChinese Academy of Sciences(CAS)Ningbo 315201China Laboratory for Microstructures Institute of MaterialsShanghai UniversityShanghai 200444China School of Chemistry and Materials Science Shanxi Normal UniversityLinfen 041004China

Exchange-coupled nanocomposites with hard/soft magnetic phases are promising for the next generation of permanent *** methods have an advantage in controlling the nanoscale size of both *** nanocomposites obtained by the chemical method generally consist of a hard phase core and a soft phase ***,the soft-phase shell is easily oxidized leading to small enhancement of ***,a novel microstructure of Fe@FePt nanocomposites with Fe soft phase core and FePt hard phase shell has been synthesized by replacement reaction,in which the size of core and shell can be controlled below 10 nm by adjusting the ratio of Fe nanoparticles to PtCl *** exchange-coupling(single-phase-like demagnetization curves)between soft-hard phases was observed due to the precise size control of both phases,and substantial enhancements both in remanence(32%)and saturation magnetization(81%)were obtained in optimal *** work provides an alternative routine to prepare heterostructure materials with various applications.

关键词： Magnetic materials Nanocomposites Core-shell microstructure Exchange-coupling interactions

Synthesis of Refractory Cordierite from Calcined Bauxite, Talcum and Quartz

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Journal of Wuhan University of Technology(Materials Science) 2013年第2期28卷 329-333页

作者：吴建锋 FANG Binzheng xu xiaohong xu Xiaoyang ZHENG Shuqing YI Guoxia State Key Laboratory of Silicate Materials for Architectures

A cordierite was synthesized from calcined bauxite, talcum, and quartz. The properties and microstructure of the cordierite sintered samples were characterized by Archimedes＇ method, thermal dilatometry, X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and so on. The experimental results showed that calcined bauxite could broaden the range of synthesizing temperature from 1300 ℃ to 1420 ℃ and get pure cordierite. The bulk density and linear thermal expansion coefficient of the sample synthesized at 1420 ℃ for 2 h were 1.97 g·cm^-3 and 2.1×10^-6 ℃^-1, respectively. The XRD analysis showed that the major crystalline phase was a-cordierite with almost no glassy matters, the SEM images illustrated a small vent hole and the size were 5 -100 μm, the well-grown hexagonal and granular cordierite grains had the sizes distributed among 0.1-8 ;xm, and providing high mechanical strength and lower linear thermal expansion coefficient.

关键词： cordierite calcined bauxite synthesizing temperature properties and microstructure

Intrinsic vacancy in 2D defective semiconductor In_(2)S_(3) for artificial photonic nociceptor

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Materials Futures 2023年第3期2卷 148-155页

作者： Peng Wang Wuhong xue Wenjuan Ci Ruilong Yang xiaohong xu Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education&School of Chemistry and Materials Science of Shanxi Normal University Taiyuan 030031People’s Republic of China

It is crucial to develop an advanced artificially intelligent optoelectronic information system that accurately simulates photonic nociceptors like the activation process of a human visual nociceptive *** light reaches the retina for human visual perception,but its excessive exposure can damage nearby ***,there are relatively few reports on visible light–triggered ***,we introduce a two-dimensional natural defectiveⅢ–Ⅵsemiconductorβ-In_(2)S_(3)and utilize its broad spectral response,including visible light brought by intrinsic defects,for visible light–triggered artificial photonic *** response mode of the device,under visible light excitation,is very similar to that of the human *** perfectly reproduces the pain perception characteristics of the human visual system,such as‘threshold,’‘relaxation,’‘no adaptation’,and‘sensitization’.Its working principle is attributed to the mechanism of charge trapping associated with the intrinsic vacancies in In_(2)S_(3)*** work provides an attractive material system(intrinsic defective semiconductors)for broadband artificial photonic nociceptors.

关键词： defective semiconductor In_(2)S_(3) intrinsic vacancy artificial photonic nociceptors

Effects of ZrO_2 on the structure and magnetic properties of CoPt thin films

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Rare Metals 2007年第1期26卷 23-27页

作者： SHEN Xiaohua xu xiaohong JIANG Fengxian LV Baohua TIAN Baoqiang JIN Tao School of Chemistry and Materials Science Shanxi Normal University Linfen 041004 China

[CoPt 1.5 ml/ZrO2 xnm]10 multilayer films were deposited on glass substrates by magnetron sputtering and then annealed in vacuum at 600℃ for 30 min. Their structures and magnetic properties were investigated as a function of ZrO2 content. The results show that the grain size and coercivity first increase and then decrease with the increase in ZrO2 content. The maximum coercivity and grain size are obtained at 37 vol.% of ZrO2. The content of ZrO2 in the film plays an important role in the separation of CoPt grains and in the reduction of intergrain exchange interaction. On the basis of the studies of angular dependent coercivity, it is found that the magnetization reversal of CoPt films with （111 ） texture is different from either the domain wall motion or the S-W type of rotation mode.

关键词： [CoPt/ZrO2]10 thin fllms grain size magnetron sputtering ZrO2 content