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Thursday, August 6, 2020 | History

3 edition of Containerless liquid-phase processing of ceramic materials found in the catalog.

Containerless liquid-phase processing of ceramic materials

Containerless liquid-phase processing of ceramic materials

final report, NASA grant number NAGW-4345, period: April 15, 1995 - April 15, 1996

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Published by Containerless Research, Inc., National Aeronautics and Space Administration, National Technical Information Service, distributor in Evanston, IL, [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Liquids.,
  • Containerless melts.,
  • Ceramics.,
  • Laser heating.,
  • Superheating.,
  • Cooling.,
  • Solidification.

  • Edition Notes

    Other titlesContainerless liquid phase processing of ceramic materials.
    Statementby J.K. Richard Weber, principal investigator; Paul C. Nordine, co-investigator.
    Series[NASA contractor report] -- NASA-CR-200986., NASA contractor report -- NASA CR-200986.
    ContributionsNordine, Paul C., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18121379M

    Ceramic composites may be produced by traditional ceramic fabrication methods including mixing the powdered matrix material with the reinforcing phase followed by processing at elevated temperature: hot pressing, sintering. Such fabrication routs are successfully employed for preparing composites reinforced with a discontinuous phase (particulate or short fibers). @article{osti_, title = {DIFFRACTION STUDIES OF THE STRUCTURE OF LIQUIDS}, author = {Kruh, R.F.}, abstractNote = {Methods of determining the average spatial distributions ofl atoms in liquids are described for monoatomic and data are interpreted in terms of mean distribution of interatomic distances for those liquids with no permanent aggregates and in .

    **Institute for Technology of Nuclear and other Mineral Raw Materials, Belgrade, Yugoslavia Submitted February 3, ; accepted Decem The effect of both particle size and furnace atmosphere on the sintering of ceramic powder . @article{osti_, title = {Characterization of alumina/yttrium-aluminum garnet and alumina/yttrium-aluminum perovskite eutectics}, author = {Matson, L.E. and Hay, R.S. and Mah, T.}, abstractNote = {Alumina/yttrium-aluminum garnet (YAG) and alumina/yttrium-aluminum perovskite (YAP) eutectics were made by directional solidification. The two systems were .

    Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Containerless processing is a key technology in material science research for investigating the formation of metastable phases and nucleation phenomena and for measuring thermophysical materials properties such as heat capacity, surface tension, thermal conductivity, and viscosity of molten samples.


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Containerless liquid-phase processing of ceramic materials Download PDF EPUB FB2

Investigate containerless liquid-phase processing of molten ceramic materials. The research used an aero-acoustic levitator in combination with cw CO 2 laser beam heating [1,2] to achieve containerless melting, superheating, undercooling, and.

Get this from a library. Containerless liquid-phase processing of ceramic materials: final report, NASA grant number NAGW, period: Ap - Ap [J K Richard Weber; Paul C Nordine; United States. National Aeronautics and Space Administration.]. Gas Diffusion During Containerless Hot Isostatic Pressing of Liquid‐Phase Sintered Ceramics Article in Journal of the American Ceramic Society 72(6) - March with 71 Reads.

Containerless liquid-phase processing methods were used to synthesize two glasses, both containing alumina (A), yttria (Y), and lanthana (L), and one. Ceramic Processing and Sintering, Second Edition provides clear and intensive discussions on colloidal and sol-gel processing, sintering of ceramics, and kinetic processes in materials.

From powder synthesis and consolidation to sintering and densification behavior, this latest edition emphasizes the impact of each processing procedure on 4/5(5). This book is primarily an introduction to the vast family of ceramic materials. The first part is devoted to the basics of ceramics and processes: raw materials, powders synthesis, shaping and sintering.

It discusses traditional ceramics as well as “technical” ceramics – both oxide and non-oxide – which have multiple developments. The second part focuses on 5/5(1). liquid phase has been recognised. In fact, almost all industrially used materials have been molten in some processing step, specifically in casting.

Solidification from the melt leaves its fingerprints in the final material, and hence it is of utmost importance to understand the properties of the molten state and its solidification behaviour. Ceramics are an incredibly diverse family of materials whose members span traditional ceramics (such as pottery and refractories) to the modern day engineering ceramics (such as alumina and silicon nitride) found in electronic devices, aerospace components and cutting tools.

Whilst the most extravagant claims of the s in favour of advanced ceramic materials (such as the all. Abstract. Liquid phase sintering is widely used for consolidation of ceramics as well as metallic powders into final shapes.

Main advantages of this production method are low sintering temperatures, fast densification, high final densities and resulting microstructures often providing mechanical or physical material properties superior to solid state sintered by: 5.

Abstract Liquid phase sintering (LPS) is a process for forming high performance, multiple-phase components from powders. It involves sintering under conditions where solid grains coexist with a wetting liquid.

Many variants of LPS are applied to a wide range of engineering materials. Example applications for this technology are found inCited by: The present study focuses on the sintering of silicon carbide-based ceramics (SiC) by liquid phase sintering (LPS) followed by characterization of the produced ceramics.

AlN/Re 2 O 3 mixtures were used as additives in the LPS process. In the first step, the LPS-SiC materials were produced in a graphite resistance furnace in the form of discs at Cited by: 7. 'Starch consolidation ' 3 Materials Ceramic and organic materials used in this work are listed in Table 1 together with some character- istics.

The starches used were of two types, one native potato starch, available in the supermarket for use in cooking, and one etherficated potato starch modified by hydroxy-propylation and cross link- by: Ceramic oxides represent the most extensive group of ceramic materials produced today.

Traditionally, but rather artificially, the oxide ceramics are divided into well as the careful control of processing conditions and of the materials micro- Liquid-phase sintered (LPS) aluminas: Despite the fact that LPS aluminas File Size: 8MB.

FIGURE Micrographs of after liquid-phase sintering for 1 min in micro- gravity at C: (a) low magnification view of sample edge and wavy solidified liquid; (b) high magnification view of sample interior showing solid grain agglomeration (courtesy R.

German). same concerns about homogeneity of starting compact applies to liquid-phase. In view of considerable attention in the development of liquid phase sintered SiC, a comprehensive study of the data on processing, structure and properties seems highly relevant.

This article provides a detailed and critical overview of liquid phase sintered silicon carbide ceramics with primary emphasis of grain-boundary/secondary phase evolution, their structure, Cited by: 3.

terminology used in this book, and we here compare with Figures –,which show some selected starting materials as well as some selected products of various branches of the ceramic industry. We should already here appreciate that advanced ceramics meets the highest demands of present technologies.

For instance, many ceramic materials are. Full text of "Microgravity Science and Applications. Program Tasks and Bibliography for FY " See other formats. Iron aluminide intermetallics exhibit excellent oxidation and sulfidation resistance and are therefore considered as the matrix in metal matrix composites, or the binder in hard metals or cermets.

In this paper the authors discuss the processing and properties of liquid-phase sintered iron aluminide-bonded ceramics.

It is found that ceramics such as TiB{sub 2}, ZrB{sub 2}, TiC, Cited by: 1. Full text of "Microgravity science & applications.

Program tasks and bibliography for FY " See other formats. At liquid phase sintering, a liquid phase coexists with a solid at the sintering temperature. It is a common production process for the fabrication of near net-shape products like hard metals (cemented carbides) and for den se tungsten based heavy metals.

A mixture of different metal or ceramic powders is heated to the melting. An analysis of the entire microgravity materials-science research program and the candidate investigations selected for the ISS shows that the subdiscipline of metals and alloys currently constitutes a substantial portion of the entire MRD materials-science research importance of metals and alloys in NASA-sponsored microgravity research was recognized in .Ceramic is the name for some materials that are formed by the use of word ceramic comes from the Greek word κεραμικός (keramikos).Chemically, it is an inorganic compound of metal, non-metal or metalloid atoms held together by chemical bonds.

Up to the s or so, the most important were the traditional clays, made into pottery, bricks, tiles and the like, also .The issues of structural changes produced in ceramic materials on the basis of Al2O3 and ZrO2(Y2O3) during thermomagnetic processing (B=–1 T) are considered.

The contribution of the electromagnetic field to the linear shrinkage of processed ceramic samples has been estimated to be 1–6%. The possibility of using the thermomagnetic processing method for Cited by: 1.