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作者： Zhan, Z.S. Gong, Y.S. Wang, C.B. Shen, Q. Zhang, L.M. State Key Lab. of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 China School of Materials Science and Chemical Engineering China University of Geosciences Wuhan 430074 China

In this study, K3Li2-xNb5+xO 15+2x (KLN) thin films were prepared by laser-ablated a sintered ceramic target. For an optimum deposition condition, in-situ post annealing method was employed on as-deposited films. XRD measurements showed that KLN films with (310) preferred orientation were obtained on fused quartz substrate. Surface morphology studies indicated mat in-situ post annealing could improve the surface quality of KLN thin films. The average transmittance of as-deposited and annealed films in the visible range was nearly 80% to 90%.

关键词： Thin films

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Preparation of W/W-Cu/Cu system functionally graded material by one-step hot-press sintering

Preparation of W/W-Cu/Cu system functionally graded material...

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2nd International Congress on Ceramics, ICC 2008

作者： Wang, C.B. Zeng, H. Shen, Q. Li, L. Zhang, L.M. State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

ISBN: (纸本)9788880800842

A material in the system W/W-Cu/Cu with a density gradient, which has an important application in dynamic high pressure physics, was prepared by one-step hot-press sintering. W-Cu composite interlayers were produced from W and Cu powders with Zn (2wt%) as the sintering aid. With increasing the sintering temperature, the relative density of W-Cu composites increased, reaching a higher value (>96%) at 850°C. Then by inserting three W-Cu composite interlayers between the tungsten and copper alloy plates followed by one-step hot-press at 850°C-20MPa-60min, a wholly dense W/W-Cu/Cu system functionally graded material was obtained, which had a large density range from 8.9 to 17.25g/cm3.

关键词： Functionally graded materials

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Effect of Oxygen Partial Pressure on Epitaxial Growth and Properties of Laser-Ablated AZO Thin Films

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Journal of Wuhan University of technology(materials Science) 2016年第1期31卷 27-30页

作者：王传彬 LUO Sijun SHEN Qiang 张联盟 State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Chemical Engineering and Materials Science University of California Davis CA 95616 USA

Al-doped ZnO（AZO） thin films were grown on c-sapphire substrates by laser ablation under different oxygen partial pressures（P_（O2））.The effect of P_（O2） on the crystal structure,preferred orientation as well as the electrical and optical properties of the films was *** structure characterizations indicated that the as-grown films were single-phased with a wurtzite ZnO structure,showing a significant c-axis *** films were well crystallized and exhibited better crystallinity and denser texture when deposited at higher P_（O2）.At the optimum oxygen partial pressures of 10- 15 Pa,the AZO thin films were epitaxially grown on c-sapphire substrates with the（0001） plane parallel to the substrate surface,i e,the epitaxial relationship was AZO（000 1） // A1_2O_3（000 1）.With increasing P_（O2）,the value of Hall carrier mobility was increased remarkably while that of carrier concentration was decreased slightly,which led to an enhancement in electrical conductivity of the AZO thin *** the films were highly transparent with an optical transmittance higher than 85%.

关键词： AZO thin films epitaxial growth laser ablation oxygen partial pressure electrical and optical properties

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2nd international workshop on graphene and C3N4-based photocatalysts

2nd international workshop on graphene and C3N4-based photoc...

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作者： Yu, Jiaguo Jaroniec, Mietek State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Luoshi Road 122# Wuhan430070 China

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Sodium vanadium oxides:From nanostructured design to high-performance energy storage materials

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Journal of materials Science & technology 2022年第26期121卷 80-92页

作者： Yifan Dong Shuolei Deng Ziting Ma Ge Yin Changgang Li Xunlong Yuan Huiyun Tan Jing Pan Liqiang Mai Fan Xia Engineering Research Center of Nano-Geomaterials of Ministry of Education Faculty of Material Science and ChemistryChina University of GeosciencesWuhan 430074China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

Developing high-capacity and low-cost cathode materials for metal-ion rechargeable batteries is the mainstream trend and is also the key to providing breakthroughs in making high-energy rechargeable *** has a variety of valence states and can form a variety of vanadate *** a typical positive electrode material,vanadate has abundant ion adsorption sites,a unique“pillar”framework,and a typical layered ***,it has the advantages of high specific capacity and excellent rate performance,possessing the prospect of being a large-capacity energy storage *** this review,we focus on applications of sodium vanadium oxides(NVO)in electrical energy storage(EES)devices and summarize sodium vanadate materials from three aspects,including crystal structure,electrochemical performance,and energy storage *** recent progress of NVO-based highperformance energy storage materials along with nanostructured design strategies was provided and discussed as *** review is intended to serve as general guidance for researchers to develop desirable sodium vanadate materials.

关键词： Sodium vanadate Nanostructured materials Rechargeable metal-ion batteries Energy storage mechanism

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Microstructure and Properties of A IN Coating/Graphite Fabricated via In-situ Reaction

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Journal of Wuhan University of technology(materials Science) 2007年第4期22卷 718-721页

作者：贾铁昆 State Key Lab of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology

A novel method was used to fabricate AlN coating on graphite substrate. This approach included two steps： firstly, the emulsion composed of BN and anhydrous ethanol was sprayed on the surface of the graphite substrate; secondly, AlN coating was formed through the in-situ reaction of Al with the sprayed BN. The reaction was investigated by thermogravimetric-differential thermal analysis （TG-DTA）, and the phase composition in the synthetic process was characterized by X-ray diffraction （XRD）. Scanning electronic microscopy （SEM） was used to observe the morphology, and electron probe microanalysis （EPMA） was used to observe the distribution of the elements. The experimental results show that the AlN coating is dense and bonded with graphite tightly.

关键词： in-situ reaction AlN coating nitridation spray interface

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Effect of ball milling time on the microstructure and compressive properties of the Fe–Mn–Al porous steel

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International Journal of Minerals,Metallurgy and materials 2023年第5期30卷 917-929页

作者： Lingzhi Xie Zhigang Xu Yunzhe Qi Jinrong Liang Peng He Qiang Shen Chuanbin Wang Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Wuhan Second Ship Design and Research Institute Wuhan 430205China

In the present work,Fe–Mn–Al–C powder mixtures were manufactured by elemental powders with different ball milling time,and the porous high-Mn and high-Al steel was fabricated by powder *** results indicated that the powder size significantly decreased,and the morphology of the Fe powder tended to be increasingly flat as the milling time ***,the prolonged milling duration had limited impact on the phase transition of the powder *** main phases of all the samples sintered at 640℃ were α-Fe,α-Mn and Al,and a small amount of Fe2Al5 and *** the sintering temperature increased to 1200℃,the phase composition was mainly comprised of γ-Fe and α-*** weight loss fraction of the sintered sample decreased with milling time,i.e.,8.3wt% after 20 h milling compared to15.3wt% for 10 *** Mn depletion region(MDR) for the 10,15,and 20 h milled samples was about 780,600,and 370 μm,*** total porosity of samples sintered at 640℃ decreased from ~46.6vol% for the 10 h milled powder to ~44.2vol% for 20 h milled *** sintering at 1200℃,the total porosity of sintered samples prepared by 10 and 20 h milled powder was ~58.3vol% and ~51.3vol%,*** compressive strength and ductility of the 1200℃ sintered porous steel increased as the milling time increased.

关键词： powder metallurgy porous steel ball milling time microstructure evolution compressive properties

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Preparation of Ca_9Sr(PO_4)_6(OH)_2 Nanoparticles and Effects on Proliferation of Bel-7402 and L-02 Cells in vitro

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Journal of Wuhan University of technology(materials Science) 2005年第B12期20卷 271-273页

作者：王友法 Biomedical Materials and Engineering Research Center Wuhan University of TechnologyWuhan 430070ChinaState Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Inorganic nanoparticles were used to treat cancer cells us well as normal cells. Ca9Sr（ PO4）6（OH）2 nanopartides were prepared through homogeneous precipitation method. Strontium hydroxide, calcium hydroxide solation and monocalcium phosphate were used as initial materials. The strontium-doped hydroxyapatite nanoparticles were characterized by XRD, PCS and AFM. The nanoparticles were applied to interact with human bepatocellular carcinoma cells Bel-7402 and nornud liver cells L-02. Experimental results revealed that nano strontium-strontium apatiw has different bioeffects on proliferation of these two kinds of cells.

关键词： strontium-doped apatite nanoparticle cancer inhibition

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Study on the Variation of Calcium and Phosphorus in Nano Hydroxyapatie Treated Cancer Cells through Synchrotron Radiation XRF

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Journal of Wuhan University of technology(materials Science) 2005年第B12期20卷 184-186页

作者：王友法 Biomedical Materials and Engineering Research Center Wuhan University of Technology Wuhan 430070ChinaState Key Lab of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China

The HAP nanoparticles were synthesized with a chemical co-precipitation method. It was monodispersed in needle shape, Its average diameter was 30 nm and length was 70 nm. Human liver cancer cells and normal hepatic cells were treated by hydroxyapatite nanopartides. SR-XRF analysis was used to detect the content variation of calcium and phosphor elements in cancer cells when the cells were treated by hydroxyapatite nanoparticles. It was introduced to reveal the anti-cancer mechanism of HAP nanoparticles. Experiments verified that the contents of calcium and phosphor elements in hepatocelltdar carcinoma had been obviously increased after the cells were treated by hydroxyapatite nanoparticles. And the contents increased with hydroxyapatite concentration and treatment time increasing. The Ca/P molar ratio in treated cell was different from both that in hydroxyapatite and that in untreated cancer cell. Apatite nanoparticles evidently altered the calcium and phosphor environmeats in treated hepatocellalar carcinoma cells. That finally halted the proliferation of carcinoma cells.

关键词： Hydroxyapatite nanoparticles SR-XRF anti-cancer effects

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Micro forward extrusion of a Zr-based bulk metallic glass in its supercooled liquid region

Micro forward extrusion of a Zr-based bulk metallic glass in...

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10th International Conference on technology of Plasticity, ICTP 2011

作者： Zheng, Z.Z. Wang, Y. Wang, X.Y. Li, J.J. Liu, L. State Key Lab. of Material Processing and Die and Mould Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9783514007840

Micro forward extrusion experiments have been carried out using various sizes of dies to investigate the effects of specimen dimension and die length and also to obtain the characteristics of material flow during the extrusion of Zr55Cu30Ni5Al10 bulk metallic glass at temperatures within the supercooled liquid region (SLR). The results indicated that the pressure-stroke curves can be divided into three different stages. With the decrease in specimen size, the unit pressure increased and the tendency of forming load changed as well. Finally, when a short length extrusion die was used, specimens were found to swell after extrusion. The characteristics of the material flow changed and the flow stress rapidly increased after a specimen was extruded out from die exit. The finite element analysis (FEM) was also performed by using the constitutive equations, previously developed by the authors. The results showed that the size effect of micro forward extrusion could not be simulated in the present FEM analysis. © 2011 IBF (RWTH Aachen) & IUL (TU Dortmund).

关键词： Extrusion

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