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refractory materials borides and carbides usage

  • Use of refractory oxides, carbides and borides as

    1987-5-3 · Nuclear Instruments and Methods in Physics Research B26 (1987) 183-189 North-Holland, Amsterdam 183 USE OF REFRACTORY OXIDES, CARBIDES AND BORIDES AS TARGETS FOR ON-LINE MASS SEPARATION H.L. RAVN 1), T. BJ0RNSTAD 2), P. HOFF 3), O.C. JONSSON 1>, E. KUGLER1', S. SUNDELL, B. VOSICKI 1) and the ISOLDE Collaboration 1) CERN-ISOLDE, Geneva, …

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  • Process for preparing refractory borides and carbides ...

    As is well known, certain borides and carbides are highly refractory and are useful in the fabrication of products capable of withstanding high temperatures and physical and chemical attack. Titanium diboride (TiB 2 ), for example, is useful in the fabrication of bushing materials, bearing liners, nozzles and …

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  • THE ANALYSIS OF REFRACTORY BORIDES, CARBIDES,

    2021-5-17 · Methods are presented for the analysis of 41 refractory materials. An evaluation of the accuracy and the precision of these techniques are also given The materials studied are the borides of hafnium, molybdenum, niobiumL rhenium, tantalum, thorium, titanium, tungsten, uranium vanadium, and zirconium; the carbides of hafnium molybdenum, miobium ...

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  • The wetting of refractory carbides, borides, and

    1966-7-1 · The investigation has shown that the wetting of refractory compounds by metals is directly linked with the character of their chemical reaction, as well as with the direction of preferential transport of elements, from the melt to the refractory support or vice versa. The wetting of a support material by a melt can be controlled by means of additions to one of the contacting materials, which ...

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  • Studies of refractory carbides, nitrides, and borides as ...

    Abstract Thermionic emission properties of several kinds of refractory carbides, nitrides, and borides of the transition metals in the form of powder were investigated with a newly developed measur...

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  • The Physics and Chemistry of Carbides, Nitrides and

    2020-5-23 · Abstract: Oxides, borides and carbides of the transition elements are materials of great interest from a technologic point of view. Many of these materials are used in the form of thin films, so several techniques are commonly used to deposit them. …

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  • Borides and Carbides of Transition Elements

    Ultra-High Temperature Materials II Refractory Carbides I (Ta, Hf, Nb and Zr Carbides) Authors: ... Re, Os, Ta, Mo, Nb, Ir) and compounds (oxides, nitrides, carbides, borides, silicides) with melting points in this range. It will be of interest to researchers, engineers, postgraduate, graduate and undergraduate students alike. The reader is ...

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  • Ultra-High Temperature Materials II - Refractory

    2012-5-29 · and zirconium and some non-oxide refractories like carbides, nitrides, borides, silicates and graphite. The main types include fire-clay bricks, castables, ceramic fiber and insulating bricks that are ... refractory materials such as magnesia, which has a melting point of 5070 degrees. Requirements of Right Refractory

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  • Overview of Refractory Materials - pdhonline.com

    2012-12-17 · The rare earth borides, carbides, and nitrides tend to be highly refractory compounds, typically with melting points above 2300 K. One way of looking at the less metal-rich compounds is that the boron, carbon, and nitrogen atoms, respectively, form strongly covalent atomic networks in which rare earth atoms occupy particular spaces/voids.

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  • Process for preparing refractory borides and carbides ...

    As is well known, certain borides and carbides are highly refractory and are useful in the fabrication of products capable of withstanding high temperatures and physical and chemical attack. Titanium diboride (TiB 2 ), for example, is useful in the fabrication of bushing materials, bearing liners, nozzles and …

    Get Price
  • Processing of Refractory Metal Borides, Carbides and ...

    Transition metal borides, carbides and nitrides are candidates for very high temperature applications. A review of various processing techniques to fabricate dense monolithic and composite materials is presented. In particular, we focus on reactive hot pressing (RHP) which allows synthesis and densification to be achieved simultaneously. We report the RHP of composites in the Ti-B-N, Zr-B-C ...

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  • The wetting of refractory carbides, borides, and

    The investigation has shown that the wetting of refractory compounds by metals is directly linked with the character of their chemical reaction, as well as with the direction of preferential transport of elements, from the melt to the refractory support or vice versa. The wetting of a support material by a melt can be controlled by means of additions to one of the contacting materials, which ...

    Get Price
  • Development of Refractory and Rare Earth Metal

    2016-1-1 · Among the non-oxide ceramics, carbides and borides such as B 4 C, TiB 2, ZrB 2, HfB 2, NbB 2, CrB 2, LaB 6, CeB 6, NdB 6, EuB 6 posses attractive combination of high temperature properties for engineering applications. However, they are difficult to synthesize and fabricate in the form of dense bodies, because of their refractory nature and low self diffusion coefficient.

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  • Ultra-High Temperature Materials II - Refractory

    Ultra-High Temperature Materials II Refractory Carbides I (Ta, Hf, Nb and Zr Carbides) Authors: ... Re, Os, Ta, Mo, Nb, Ir) and compounds (oxides, nitrides, carbides, borides, silicides) with melting points in this range. It will be of interest to researchers, engineers, postgraduate, graduate and undergraduate students alike. The reader is ...

    Get Price
  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-6-7 · refractory carbides, nitrides and borides.Comprehensive Hard Materials deals with the production, uses and properties of the carbides, nitrides and borides of these metals and those of titanium, as well as tools of ceramics, the superhard boron nitrides and diamond and related compounds. Articles include the technologies of powder

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  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-5-22 · Refractory carbides and nitrides are useful materials with numerous industrial applications and a promising future, in addition to being materials of great interest to the scientific community. Although most of their applications are recent, the refractory carbides and nitrides have been known for over one hundred years.

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  • (PDF) The Physics and Chemistry of carbides, Nitrides

    Carbides, nitrides and borides are families of related refractory materials. Traditionally they have been employed in applications associated with engineering ceramics where either high ...

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  • Materials Science of Carbides, Nitrides and Borides |

    After decades of research, the materials are being used in electronics, wear resistant, refractory and other applications, but numerous new applications are possible. Roughly equal numbers of papers cover theoretical and experimental research in the general field of materials science of refractory materials.

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  • High-Entropy Ultra-High-Temperature Borides and

    2021-6-3 · Herein, we critically evaluate computational and experimental studies in the emerging field of high-entropy ultra-high-temperature ceramics. High-entropy ultra-high-temperature ceramics are candidates for use in extreme environments that include temperatures over 2,000°C, heat fluxes of hundreds of watts per square centimeter, or irradiation from neutrons with energies of several …

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  • The Physics and Chemistry of Carbides, Nitrides and

    Thermionic emission properties of several kinds of refractory carbides, nitrides, and borides of the transition metals in the form of powder were investigated with a newly developed measuring device and evaluated by the figure of merit defined as the ratio of the effective work function to the working temperature at which the vapor pressure becomes 1 x 10(-5) Torr.

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  • Studies of refractory carbides, nitrides, and borides as ...

    Transition metal borides, carbides and nitrides are candidates for very high temperature applications. A review of various processing techniques to fabricate dense monolithic and composite materials is presented. In particular, we focus on reactive hot pressing (RHP) which allows synthesis and densification to be achieved simultaneously. We report the RHP of composites in the Ti-B-N, Zr-B-C ...

    Get Price
  • Processing of Refractory Metal Borides, Carbides and ...

    Carbides, nitrides and borides are families of related refractory materials. Traditionally they have been employed in applications associated with engineering ceramics where either high ...

    Get Price
  • (PDF) The Physics and Chemistry of carbides, Nitrides

    2012-5-29 · and zirconium and some non-oxide refractories like carbides, nitrides, borides, silicates and graphite. The main types include fire-clay bricks, castables, ceramic fiber and insulating bricks that are ... refractory materials such as magnesia, which has a melting point of 5070 degrees. Requirements of Right Refractory

    Get Price
  • Overview of Refractory Materials - pdhonline.com

    2021-5-25 · The Physics and Chemistry of Carbides, Nitrides and Borides This exhaustive work in three volumes with featuring cross-reference system provides a thorough overview of ultra-high temperature materials – from elements and chemical compounds to alloys and composites.

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  • Handbook Of Refractory Carbides Nitrides Properties ...

    2015-12-11 · Ceramics such as refractory metal carbides and borides (e.g., ZrC, HfC, TaC, ZrB2, HfB2, etc.) are candidate materials for these applications because of their high thermal conductivity and the high melting temperatures of both the base material and the solid oxidation product.

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  • Novel Polymer-Derived Carbide and Boride Refractory ...

    Refractory metal borides, carbides, nitrides and mixtures thereof of the Group IVb, Vb and VIb metals are produced from a glass or microcrystalline gel formed from organo-metallic precursors. Typically TiO 2 .B 2 O 3 glass is produced by hydrolysis of titanium butoxide and trimethyl borate, followed by gelling/drying. The glass may have carbon inclusions or may be mixed with carbon or aluminum ...

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  • US4595545A - Refractory metal borides and

    China Carbides And Borides manufacturers - Select 2021 high quality Carbides And Borides products in best price from certified Chinese Oil And Gas Equipment, Bolt And Hardware suppliers, wholesalers and factory on Made-in-China.com

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  • China Carbides And Borides, Carbides And Borides ...

    What does borides mean? Plural form of boride. (noun) Dictionary ! Menu. ... on the fusion and volatilization of refractory materials, and on the formation of carbides, suicides and borides of various metals, consisted, ... and the most refractory elements are converted into vapour, ...

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  • Borides & Carbides - qkmaterials.com

    Borides & Carbides. A boride is a compound consisting of boron and a less electronegative element such as silicon boride. The borides of transition and rare-earth metals are considered for application as wear-resistant and corrosion-resistant, decorative or thermionic coatings.

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  • Studies of refractory carbides, nitrides, and borides as ...

    Thermionic emission properties of several kinds of refractory carbides, nitrides, and borides of the transition metals in the form of powder were investigated with a newly developed measuring device and evaluated by the figure of merit defined as the ratio of the effective work function to the working temperature at which the vapor pressure becomes 1 x 10(-5) Torr.

    Get Price
  • Studies of refractory carbides, nitrides, and borides as ...

    Abstract Thermionic emission properties of several kinds of refractory carbides, nitrides, and borides of the transition metals in the form of powder were investigated with a newly developed measur...

    Get Price
  • Ultra-High Temperature Materials II: Refractory

    Ultra-High Temperature Materials II: Refractory Carbides I (Ta, Hf, Nb and Zr Carbides) Igor L. Shabalin. 0 ... Re, Os, Ta, Mo, Nb, Ir) and compounds (oxides, nitrides, carbides, borides, silicides) with melting points in this range. It will be of interest to researchers, engineers, postgraduate, graduate and undergraduate students alike. The ...

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  • Refractories and Classification of Refractories –

    Refractories are ceramic materials capable of withstanding high temperatures. The bulk of refractory materials consist of single or mixed high melting point oxides such as silicon, aluminum, magnesium, calcium and zirconium. Non-oxide refractories also exist and include materials such as carbides, nitrides, borides and graphite.

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  • NON-OXIDE REFRACTORIES - Coggle Diagram

    2017-7-12 · The corrosion resistance of nanopowders of borides and carbides of metals of IV–VIB groups, as well as of silicon carbide, was studied in the standard nickeling electrolytes. As objects of study, nanopowders with the content of the main phase 91.8–97.6% and with the average particle size 32–78 nm were used. Their corrosion resistance was evaluated depending on the acidity of the ...

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  • Corrosion Resistance of Nanopowders of Borides and ...

    What does carbides mean? Plural form of carbide. (noun)

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  • Carbides Meaning | Best 1 Definitions of Carbides

    2013-9-28 · Introduction to Refractories. satyendra; September 28, 2013; 1 Comment ; acidic, alumina, basic, fireclay, PCE, refractories, silica,; Introduction to Refractories. Refractories are defined in ASTM C71 as non metallic materials having those chemical and physical properties that make them applicable for structures or as components of systems that are exposed to environments above 538 deg C ...

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  • Introduction to Refractories – IspatGuru

    2020-7-21 · High entropy materials, which include high entropy alloys, carbides, and borides, are a topic of substantial research interest due to the possibility of a large number of new material compositions that could fill gaps in application needs. There is a current ...

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  • (PDF) Use of refractory oxides, carbides and borides as ...

    Use of refractory oxides, carbides and borides as targets for on-line mass separation. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1987. Tor Bjørnstad. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 14 Full PDFs related to this paper.

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  • Use of refractory oxides, carbides and borides as

    Home > Use of refractory oxides, carbides and borides as targets for on-line mass separation Information ; Discussion (0) Files . Article Report number CERN-EP-86-147: Title Use of refractory oxides, carbides and borides as targets for on-line mass separation: Author(s)

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  • The use of carbides in refractories - CORE

    The high melting materials are the oxides, carbides, nitrides, borides, and hydrides. Since a great deal of work has been done on the oxides, and relatively little on the others, the oxides were dismissed. Of the other groups, the carbides seemed interesting.

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  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-6-7 · refractory carbides, nitrides and borides.Comprehensive Hard Materials deals with the production, uses and properties of the carbides, nitrides and borides of these metals and those of titanium, as well as tools of ceramics, the superhard boron nitrides and diamond and related compounds. Articles include the technologies of powder

    Get Price
  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-5-27 · refractory carbides, nitrides and borides. Handbook of Refractory Carbides & Nitrides Advanced Materials & Processes Thermomechanics of Coated-particle Fuel for Advanced Gas Reactors High-pressure materials research has been revolutionized in the past few years due to technological breakthroughs in the diamond anvil cell (DAC), shock wave

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  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-5-26 · applications are recent, the refractory carbides and nitrides have been known for over one hundred years. The industrial importance of the refractory carbides and nitrides is growing rapidly, not only in the traditional and well-established applications based on the strength and refractory nature of these materials such as cutting tools and ...

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  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-5-20 · Advanced Catalytic Materials Refractory carbides and nitrides are useful materials with numerous industrial applications and a promising future, in addition to being materials of great interest to the scientific community. Although most of their applications are recent, the refractory carbides and nitrides have been known for over one hundred ...

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  • Refractory materials | Metallurgy for Dummies

    2020-7-6 · The bulk of refractory materials consist of single or mixed high melting point oxides of elements such as silicon, aluminium, magnesium, calcium and zirconium. Non-oxide refractories also exist and include materials such as carbides, nitrides, borides and graphite. The actual composition of a refractory material is dependent on operating ...

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  • Handbook Of Refractory Carbides Nitrides Properties ...

    2021-5-22 · Refractory carbides and nitrides are useful materials with numerous industrial applications and a promising future, in addition to being materials of great interest to the scientific community. Although most of their applications are recent, the refractory carbides and nitrides have been known for over one hundred years.

    Get Price
  • Ultra-High Temperature Materials II: Refractory

    Ultra-High Temperature Materials II: Refractory Carbides I (Ta, Hf, Nb and Zr Carbides) Igor L. Shabalin. 0 ... Re, Os, Ta, Mo, Nb, Ir) and compounds (oxides, nitrides, carbides, borides, silicides) with melting points in this range. It will be of interest to researchers, engineers, postgraduate, graduate and undergraduate students alike. The ...

    Get Price