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An FeF 0 5H2O Polytype: A Microporous Framework

An FeF30 5H2O Polytype: A Microporous Framework Compound with Intersecting Tunnels for Li and Na Batteries Chilin Li * † ‡ Congling Yin ‡ Lin Gu Robert E Dinnebier ‡ Xiaoke Mu ∥ Peter A van Aken ∥ and Joachim Maier‡ †State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics ChineseGet price

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Influence of Powder Composition and Milling Media on the

Katsuya Kudaka Kiyokata Iizumi Takeshi Sasaki and Hiraomi Izumi Effect of Milling Media on the Reaction Kinetics of the Mechanochemical Synthesis of Pentatitanium Trisilicide Journal of the American Ceramic Society 83 11 (2887-2889) (2004) Get price

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Clare Grey

Clare P Grey Professor Associate Director Northeastern Center for Chemical Energy Storage Geoffrey Moorhouse Gibson Professor of Chemistry Cambridge University UK B A 1987 Ph D University of Oxford 1991 Junior Research Fellow Balliol College University of Oxford 1990 Royal Society Postdoctoral Fellow University of Nijmegen the Netherlands 1991-1992Get price

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US5238881A

A colored ceramic glaze is prepared from a raw glaze containing glass frit clay and one or more ceramic pigments added as an aqueous dispersion The raw glaze is ball-milled after which it is blended with the aqueous dispersion The dispersion contains up to 70% of a ceramic pigment such as zirconium-vanadium yellow preferably with 1% to 3% of a suspending agent up to about 1 5% of a Get price

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Ceramic Process Equipment for the Immobilization of

to use ball-milling with an aqueous vehicle Good blending has been achieved on the scale necessary to ensure uniform mineral products However the addition of water to the process complicates criticality control and necessitates additional processing steps An alternate technique which is being developed forGet price

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Journal of Advanced Ceramics

Abstract A 2 B 2 O 7 system compounds which usually present three phase structures mainly based on the ionic radius ratios of r A and r B (r A /r B) have been studied for potential applications in many fields such as thermal barrier coatings luminescence powders fast-ion conductors photocatalysts and matrices for immobilization of highly active radionuclides Get price

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:The effect of ball

Ba(Pb1-xBix)O-3 compound which exhibits perovskite structure is a superconducting material It can be a useful material for resistor when x value equals 0 The conducting behavior of BaPbO3 is liable to be affected during aqueous processing In contrast the phenomenon is not found in Ba(Pb0 8Bi0 2)O-3 The milling solvents of water and ethanol have different effect on the stability of Get price

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Ball milling

Jan 01 2011The hexagonal phase produced by high-energy ball milling of RbNbWO 6 transforms back to the pyrochlore structure upon heating to 773 K in air A similar phase was obtained by ball milling the mixture RbNbWO 6 + WO 3 but in this case the stoichiometric hexagonal tungsten bronze compound thus obtained remained stable up to 1273 K Get price

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Publication

F Y Lu Y Q Shen Z L Dong G K Wang F X Zhang R C Ewing and J Lian "Ion beam Irradiation-induced Amorphization of Nano-sized K x Ln y Ta 2 O 7-v Get price

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Adam Urwick

As a research assistant it was my role in the team to prepare pellet Pyrochlore samples for impedance spectroscopy and x-ray diffraction from constituent elements using processes ranging from ball milling to sieving pressing and sintering I also acquired and assembled Get price

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Publications

Prof Dr Mohamed Ellouze Search this site Personal Data: Education Professional Experiences FT-IR and X-ray diffraction investigations of gadolinium-substituted pyrochlore oxide Gd 1 82 Cs 0 18 Ti 2 O 6 82 via a sol-gel magnetic and magnetoresistance properties of Pr 0 67 Sr 0 33 MnO 3 manganite oxide prepared by ball milling methodGet price

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Strain engineered pyrochlore at high pressure

Strain engineering is a promising method for next-generation materials processing techniques Here we use mechanical milling and annealing followed by compression in diamond anvil cell to tailor the intrinsic and extrinsic strain in pyrochlore Dy 2 Ti 2 O 7 and Dy 2 Zr 2 O 7 Raman spectroscopy X-ray pair distribution function analysis and X-ray diffraction were used to characterize atomic Get price

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Fengyuan Lu

This Cited by count includes citations to the following articles in Scholar ZnO/graphene nanocomposite fabricated by high energy ball milling with greatly enhanced lithium storage capability M Yu D Shao F Lu X Sun H Sun T Hu G Wang S Sawyer H Qiu J Lian Journal of Nuclear Materials 393 (3) 481-486 2009 23:Get price

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Pertanika J Sci Technol 25 (2): 527

(99 9%) The materials were mixed with ball milling and fired at 1000C for 6 h Secondly 0 9PFN–0 1PT: xZn was prepared by mixing oxide materials that were composed of FN PbO (99%) excess with 4 mol% for compensate PbO which volatilised during the heat treatment TiO 2 Get price

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Dielectric and Ferroelectric Studies on High Dense Pb(Zr0

ceramics Article Dielectric and Ferroelectric Studies on High Dense Pb(Zr0 52Ti0 48)O3 Nanocrystalline Ceramics by High Energy Ball Milling and Spark Plasma Sintering Venkata Ramana Mudinepalli 1 * and Feng Leng 2 1 Department of Physics National Taiwan Normal University Taipei 11677 Taiwan 2 Department of Chemistry University of Nevada Las Vegas NV 89154 USA lengfeng2009gmailGet price

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Phasic and Microstructural Developments of

raw materials of Pb(Nii sNbOs were also pre- pared by mixing directly PbO NiO and Nb205 via ball-milling for 48 h for examining the difference between NiNb206-precursor method and the con- ventional mixed-oxide method These two kinds of raw materials for Pb(Ni1 3Nb2 3)03 were uniaxiallyGet price

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Preparation of Y2Ti2O7 pyrochlore using high

In the present study pyrochlore (Y2Ti2O7) is synthesized using high-energy ball milling During various stages of ball milling the ball-milled powder is taken for investigating the structural Get price

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Journal of Advanced Ceramics

Abstract A 2 B 2 O 7 system compounds which usually present three phase structures mainly based on the ionic radius ratios of r A and r B (r A /r B) have been studied for potential applications in many fields such as thermal barrier coatings luminescence powders fast-ion conductors photocatalysts and matrices for immobilization of highly active radionuclides Get price

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TITANATE CERAMIC PHASES FOR SURPLUS PLUTONIUM

non-oxide constituents ball-milling to further foster homogeneity and high-temperature subsolidus sintering in the range 1350-15000C in an appropriate atmosphere Given the practical difficulty in fabrication of precisely single-phase specimens the formulations have been designed to have a few percent ( 5wt%) TiO2 excess Get price

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LA

Densification and grain growth in BaTiO3 ceramics fabricated from nanopowders synthesized by ball-milling assisted hydrothermal reaction Journal of the European Ceramic Society Volume 28 Issue 3 2008 Pages 599-604 Yuji Hotta Cihangir Duran Kimiyasu Sato Takaaki Nagaoka Koji WatariGet price

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Abstract

Abstract The microstructural evolution and grain growth kinetics of the nanocrystalline Gd 2 Ti 2 O 7 drastically affect its properties and functionalities as thermal barrier coatings and nuclear waste forms for actinide incorporation Here we report the synthesis of the dense nano-sized Gd 2 Ti 2 O 7 by high energy ball milling (HEBM) and spark plasma sintering (SPS) and also investigated Get price

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Single

The coated powders were calcined directly without the ball-milling procedure at 850C The pyrochlore-free PMN powders obtained showed uniform and even grain size The results showed that this method is an attractive method for the synthesis of PMN-based composite powders Online Access to Journal of the American Ceramic SocietyGet price

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Effect of Nb doping on sintering and dielectric properties

1Department of Materials Science and Engineering Shiraz University Shiraz Iran the second stage of ball milling was done for 12h Fi-nally a high energy ball milling was performed on the pyrochlore structure during calcination process Figures 3a and 3b show XRD patterns of the cal-Get price

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Pyrochlore

Pyrochlore (Na Ca) 2 Nb 2 O 6 (OH F) is a mineral group of the niobium end member of the pyrochlore supergroup The general formula A 2 B 2 O 7 (where A and B are metals) represent a family of phases isostructural to the mineral pyrochlore Pyrochlores are an important class of materials in diverse technological applications such as luminescence ionic conductivity nuclear waste Get price

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ScienceCentral

Jul 27 2017Among these materials Li 7 La 3 Zr 2 O 12 (LLZO) ceramic of cubic garnet structure has a lithium ion conductivity of 10 −4 S/cm or higher at room temperature and a thermally and chemically stable interface with Li metal this is the most promising electrode 6) LLZO may also have a tetragonal structure wherein the ion conductivity in the tetragonal structure is significantly lower by two Get price

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Pressure

Pyrochlore-structured oxides (A 2 B 2 O 7) and their derivative structures have been extensively studied under the extreme conditions of high pressure [1–11] high temperature [12–15] and under irradiation [16–37] The structural transitions that result from extreme environments have been of great interest for pyrochlore-type materials Get price

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INFLUENCE OF MILLING METHOD ON THE ELECTRICAL

via 2 different methods a high-energy ball milling and a conventional ball milling were prepared The influence of the particle size distribution on the electrical and piezoelectric properties of ceramics at lower temperatures was observed and discussed Materials and MethodsGet price

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Structural transformations and disordering in zirconolite

pyrochlore fluorite and perovskite-related structure types that can be encountered during metastable pressurization and radiation-induced metamictization processes Experimental Zirconolite samples (CaZrTi 2 O 7) were prepared by ball milling a stoichiometric mixture Get price

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Featured Faculty Research

Featured Faculty Research Dr Fengyuan Lu is an Associate Professor in the Department of Mechanical Engineering He received his PhD in Nuclear Engineering at Rensselaer Polytechnic Institute in 2012 where he remained on as a Research Associate until 2014 Get price

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Metal Insulator Transition in vacant 3d orbital Quantum

1 Abstract Tb 2 Ti 2 O 7: The cubic pyrochlore - Quantum spin liquid reveals a sharp metal like to semiconductor transition (MIT) at 600 K due to the empty 3d orbitals of Ti4+ along with the interactions of O2-3+and Tb ions Electric modulus plot Nyquist plot and variations inGet price

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Nano Ball Milling

Dec 15 2012Nano Ball Milling 1 BALL MILLING METHOD By Aravind N B 2 Nano materials can be defined as those materials which have structured components with size less than 100nm at least in one dimension Nanotechnology is an advanced technology which deals with the synthesis of nano-particles processing of the nano materials and their applications Get price

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