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Sunday, August 2, 2020 | History

3 edition of Sol-gel synthesis and densification of aluminoborosilicate powders. found in the catalog.

Sol-gel synthesis and densification of aluminoborosilicate powders.

Jeffrey Bull

Sol-gel synthesis and densification of aluminoborosilicate powders.

by Jeffrey Bull

  • 215 Want to read
  • 34 Currently reading

Published by National Aeronautics and Space Administration, Ames Research Center, For sale by the National Technical Information Service in Moffett Field, Calif, [Springfield, Va .
Written in English

    Subjects:
  • Inorganic compounds -- Synthesis.

  • Edition Notes

    StatementJeffrey Bull, Guna Selvaduray, Daniel Leiser.
    SeriesNASA technical memorandum -- 103969.
    ContributionsSelvaduray, Guna S., Leiser, Daniel., Ames Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18056234M

    13 October Sol-gel synthesis of cadmium tin oxide powder. M. Jayachandran; Cadmium tin oxide powder has been synthesized by the sol-gel route using the polyacrylamide gel. Details of the preparation and preliminary characterization of the product are reported. Gas sensing properties of nanocrystalline metal oxide powders prepared Cited by: 1. Molybdenum oxide (MoO3) thin films were prepared by sol–gel methods at room temperature from the precursors of MoO3 powder mixing into NH3 or H2O2 solution and then directly treated by UV-ozone instead of widely used high-temperature annealing. Atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and ultraviolet photoelectron spectroscopy (UPS) characteristics demonstrated.

    Sol-gel synthesis of ordered mesoporous alumina Krisztian Niesz, Peidong Yang and Gabor A. Somorjai* Received (in Cambridge, UK) 23rd December , Accepted 3rd February First published as an Advance Article on the web 16th February DOI: /bd Well-ordered mesoporous alumina materials with high surface. the synthesis of nanometric ceramic particles in com-mercial quantities. These include: (i) sol-gel and chemical wet methods for precipita-tion of oxides mainly from salt solutions (ii) flame and spray pyrolysis of both oxide and non-oxide powders, using inorganic solutions (iii) chemical vapour techniques for nanopowder synthesis.

    Sol–gel synthesized zinc oxide nanorods and their structural and optical investigation for optoelectronic application Kai Loong Foo, 1 Uda Hashim, 1 Kashif Muhammad, 1 and Chun Hong Voon 1 1 Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), Kangar, Perlis , MalaysiaCited by: the synthesis of powders, porous particulates and mesoporous glasses for scaffold development, bone regeneration, drug delivery, and treatment of hypersensitive teeth, etc. [9–15]. One important drawback of the sol–gel synthesis over the melt process is that it is very difficult to obtain crack-free glass.


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Sol-gel synthesis and densification of aluminoborosilicate powders by Jeffrey Bull Download PDF EPUB FB2

Aluminoborosilicate (ABS) powders, high in alumina content, were synthesized by the sol-gel process utilizing four different methods of synthesis. The effect of these methods on the densification.

Get this from a library. Sol-gel synthesis and densification of aluminoborosilicate powders. Part 2, Densification. [Jeffrey Bull; Guna Selvaduray; Daniel Leiser; Ames Research Center.].

SOL-GEL SYNTHESIS AND DENSIFICATION OF ALUMINOBOROSILICATE POWDERS PART II--DENSIFICATION Jeffrey Bull, Guns Selvaduray,* and Daniel Leiser NASA Ames Research Center Summary Aluminoborosilicate(ABS) powders, highinalumina content,were synthesizedby the sol-gelprocessuti-lizingfour di_erentmethods ofsynthesis.

The ef. Online shopping from a great selection at Books Store. Preparation and Novel Characterization Ways of Mesoporous Metal Oxides: sol-gel synthesis of mesoporous metal oxides and their characterization scattering and gas physisorption methods.

Sol–gel synthesis of barium titanate powders of various compositions The rate of densification (which considers the green densities, BaTiO and BaTiO can be synthesized by a sol–gel method at low temperatures. The reaction between barium acetate solutions and titanium() isopropoxide leads to the formation of barium titanate gels.

Lithium aluminum silicate (LAS) powders were synthesized through sol–gel technique by using three different sources of silica, i.e., TEOS, Sol-gel synthesis and densification of aluminoborosilicate powders.

book silica and rice husk ash and their effects on the characteristics of the powders were blogorazzia.com by: Sol-gel synthesis and characterization of Nb2O5 powders Article in Materials Letters · August with Reads How we measure 'reads'.

Synthesis and characterization of alumina nano-powder obtained by sol-gel method 71 Debye-Scherrer relation was used to calculate cristallite average dimensions of alumina powders obtained by sol-gel process using inorganic and organic precursors (Table 1).

Table 1 Dimensions of α-Al2O3 crystallites calculated with Debye-Scherrer relation. Ultrafine ceria-doped zirconia powders with the general formula Ce x Zr 1−x O 2 oriented for functional ceramic materials for different purposes were prepared by modified sol–gel synthesis with use of monoethanolamine or tetraethylammonium hydroxide.

All powders were high crystallized single-phase systems with average crystallite size 8–11 blogorazzia.com by: Sol-gel and polymer photonic devices / Mark P. Andrews, S. Iraj Najafi, editors; Sol-gel synthesis and densification of aluminoborosilicate powders.

Part 1, Synthesis [microform] / Jeff Deposition of electrochromic window coatings using sol-gel technology / J.M. Bell, G.B. Smith. Abstract. BaTi 2 O 5 powders were synthesized using a sol–gel method and characterized.

Phase evolution and characteristics of the samples were studied using differential scanning calorimetry, thermogravimetric analysis and X-ray blogorazzia.com by: Synthesis of sol-gel derived alumina powder, Effect of milling and calcination temperatures on sintering behaviour Sathiyakumar, M, and all, British ceramic transactions.

98, N° 2, (), 87 Study of the sol-gel processing of glass-ceramic powders in the SiO2-A12O3-CaO-CaF2 system.I. Effect of powder composition on gel time and temperature.

Jul 17,  · A novel sol-gel processing was developed to synthesize polycrystalline cerium-doped lutetium pyrosilicate (Lu 2 Si 2 O 7:Ce, LPS:Ce) powders under low blogorazzia.com was found that the addition of propylene oxide (PPO) could promote the formation of Lu-O-Si bonds in precursor, which was beneficial to the formation of LPS blogorazzia.com by: 5.

Sol–gel synthesis and characterization of V 2O 5 powders M. Gotic´a, S. Popovic´b, M. Ivandaa, S. Music´a,* aDivision of Materials Chemistry, Rudjer Bosˇkovic´ Institute, P.O. Box Bijenicka Cesta 54, HR Zagreb, Croatia bFaculty of Sciences, Department of Physics, University of Zagreb, P.O.

BoxHR Zagreb, Croatia Received 23 December ; accepted 28 December SearchWorks Catalog Stanford Libraries. Sol-gel synthesis and densification of aluminoborosilicate powders.

Part 1, Synthesis [microform] [] Bull, Jeffrey. Sol-gel synthesis and densification of aluminoborosilicate powders. Part 2, Densification [microform] [].

Yttrium silicate (Y 2 SiO 5) powders of high purity have been synthesized using the sol–gel blogorazzia.comde precursors were used with commercial tetraethyl orthosilicate as the silica source and yttrium propoxide synthesized from YCl blogorazzia.coms calcined.

Synthesis of SiO 2 Nanostructures 2 Nanostructures Using Sol-Gel Method catalystandthehydrolyzingagent,respectively. Ethanol FESEM evaluation of powders reveals that the powders consist of fine particle agglomerates, the parti-clesappeartoadheretoeachother,formingaggregateof.

H.N. Azlina et al. Apr 01,  · High purity ZrSiO4 powder were synthesized using Si (C2H5O)4 and ZrOCl2·8H2O as raw materials by the sol-gel method, LiCl was added as mineralizer to promote crystallization of zircon.

The influences of molar ratio of Zr:Si, calcined time and calcined temperature on the synthesis of ZrSiO4 powder were investigated. XRD, SEM and TEM were used to characterize the blogorazzia.com: Zhen Quan Li, Qiang Zhen, Ya Li Wang.

The influence of solvent and the rate of addition of water on the characteristics of alumina-zirconia powders obtained by sol-gel method were investigated. The Al2O3-ZrO2 powders ( molar ratio) were prepared using aluminum tri-sec-butoxide and zirconium n-propoxide as precursors.

Ethanol (EtOH), isopropanol (iPrOH) and isobutanol (iBuOH) were used as blogorazzia.com by: 9. Sol-gel technology has been used for investigation the synthesis and structure of gels in the Al 2 O 3-TiO 2-SiO 2-MgO system [22]. Taking into account that the main advantages of sol-gel method can contribute to improve the proper-ties and applications of cordierite/tialite glass-ceramics, this method has been used for their synthesis, as well as.

Jul 01,  · CeO2 nano-sized crystalline powders were prepared by sol-gel combustion method from ammonium cerium nitrate and citric acid, and the dependences of the particle size of synthesized powder on the precursor gel were investigated.

The precursor gels and the synthesized powders were characterized by field emission scanning electron microscopy (FE-SEM) and X-ray scattering (XRD).Cited by: 1.New approaches for β-cyclodextrin-containing silicas synthesis were demonstrated. Materials with hexagonally ordered mesoporous structure were prepared by postsynthesis grafting and by co-condensation methods.

β-Cyclodextrin activated by a N,N′-carbonyldiimidazole was employed for postsynthesis treatment of 3-aminopropyl-modified MCM support as well as for sol-gel synthesis Cited by: 7.Sol-Gel science and technology.

The way of making materials in any form including fibers, films, particles and monolithic solids starting with liquids and molecular precursors. Glass, Ceramics and organic-inorganic materials can be processed by Sol- Gel techniques.