ES327660A1 - A method of treating graphite articles and products obtained thereby - Google Patents

A method of treating graphite articles and products obtained thereby

Info

Publication number
ES327660A1
ES327660A1 ES327660A ES327660A ES327660A1 ES 327660 A1 ES327660 A1 ES 327660A1 ES 327660 A ES327660 A ES 327660A ES 327660 A ES327660 A ES 327660A ES 327660 A1 ES327660 A1 ES 327660A1
Authority
ES
Spain
Prior art keywords
graphite
stage
hydrocarbon
hydrogen
products obtained
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES327660A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of ES327660A1 publication Critical patent/ES327660A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C01B32/963—Preparation from compounds containing silicon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
    • C04B41/5057—Carbides
    • C04B41/5059—Silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/87—Ceramics
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C5/00—Moderator or core structure; Selection of materials for use as moderator
    • G21C5/12—Moderator or core structure; Selection of materials for use as moderator characterised by composition, e.g. the moderator containing additional substances which ensure improved heat resistance of the moderator
    • G21C5/126—Carbonic moderators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00862—Uses not provided for elsewhere in C04B2111/00 for nuclear applications, e.g. ray-absorbing concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Graphite articles are coated with silicon carbide in a two-stage process in the first stage the graphite is heated at below 1100 DEG C. in an atmosphere of hydrogen, hydrocarbon and silicon halide to form a deposit of silicon carbide in the pores of the graphite and in the second stage the graphite is heated at above 1200 DEG C. in an atmosphere of either hydrogen, hydrocarbon and silicon halide or of hydrogen and of a gaseous organic silicon compound to provide a thick uniform coating of silicon carbide on the graphite. The first stage is preferably carried out at about 1050 DEG C. and the second stage is preferably carried out at about 1400 DEG C. using toluene or methane as the hydrocarbon or using methyl trichlorosilane as the organic silicon compound.
ES327660A 1965-06-09 1966-06-07 A method of treating graphite articles and products obtained thereby Expired ES327660A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR20088A FR1448867A (en) 1965-06-09 1965-06-09 Process for treating graphite articles and products conforming to those obtained by applying said process

Publications (1)

Publication Number Publication Date
ES327660A1 true ES327660A1 (en) 1969-09-01

Family

ID=8581338

Family Applications (1)

Application Number Title Priority Date Filing Date
ES327660A Expired ES327660A1 (en) 1965-06-09 1966-06-07 A method of treating graphite articles and products obtained thereby

Country Status (8)

Country Link
BE (1) BE682311A (en)
CH (1) CH459042A (en)
DE (1) DE1269559B (en)
ES (1) ES327660A1 (en)
FR (1) FR1448867A (en)
GB (1) GB1089785A (en)
LU (1) LU51269A1 (en)
NL (1) NL153509B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287259A (en) * 1979-12-05 1981-09-01 The United States Of America As Represented By The United States Department Of Energy Preparation and uses of amorphous boron carbide coated substrates
US4871587A (en) * 1982-06-22 1989-10-03 Harry Levin Process for coating an object with silicon carbide
CA1287711C (en) * 1984-11-30 1991-08-20 Paul E. Gray Oxidation-inhibited carbon-carbon composites
GB8503876D0 (en) * 1985-02-15 1985-03-20 Ontario Research Foundation Chemical vapour deposition of titanium borides
DE102006040309B4 (en) * 2006-08-29 2009-04-16 Ald Vacuum Technologies Gmbh Spherical fuel assembly and its manufacture for gas-cooled high-temperature ball-puffed nuclear reactors (HTR)

Also Published As

Publication number Publication date
FR1448867A (en) 1966-08-12
BE682311A (en) 1966-11-14
DE1269559B (en) 1968-05-30
GB1089785A (en) 1967-11-08
NL6607842A (en) 1966-12-12
LU51269A1 (en) 1966-08-08
CH459042A (en) 1968-06-30
NL153509B (en) 1977-06-15

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