FR2387922A1 - Graphite moulding with coating of silicon carbide - obtd. by reaction bonding, and providing resistance to attack by chemicals - Google Patents

Graphite moulding with coating of silicon carbide - obtd. by reaction bonding, and providing resistance to attack by chemicals

Info

Publication number
FR2387922A1
FR2387922A1 FR7811534A FR7811534A FR2387922A1 FR 2387922 A1 FR2387922 A1 FR 2387922A1 FR 7811534 A FR7811534 A FR 7811534A FR 7811534 A FR7811534 A FR 7811534A FR 2387922 A1 FR2387922 A1 FR 2387922A1
Authority
FR
France
Prior art keywords
moulding
graphite
obtd
coating
degrees
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.)
Granted
Application number
FR7811534A
Other languages
French (fr)
Other versions
FR2387922B1 (en
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.)
Forschungszentrum Juelich GmbH
Original Assignee
Kernforschungsanlage Juelich GmbH
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 Kernforschungsanlage Juelich GmbH filed Critical Kernforschungsanlage Juelich GmbH
Publication of FR2387922A1 publication Critical patent/FR2387922A1/en
Application granted granted Critical
Publication of FR2387922B1 publication Critical patent/FR2387922B1/fr
Granted 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/522—Graphite
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
    • 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
    • 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
    • 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

Abstract

Moulding has a protective layer resisting corrosion and formed from raw materials similar to synthetic graphite (SG), or graphite or SG particles coated with a binder. The protective layer is formed from one or more, layers obtd. using the raw material employed for the moulding together with Si or Zr, so the atomic % of the Si or Zr increases from 0-50 atomic % from the innermost layer of the coating to the outermost layer. Pref. moulding consists of graphite, which is immersed in a bath of Si in vacuo or protective gas, and the coated moulding is then heated at 1800 degrees C to form SiC, Alternatively, the moulding may be dipped one or more times in a liq contg. powdered Si or Zr in suspension in a soln. of phenol formaldehyde contg. graphite. The moulding is then heated in an inert atmos. to 650-850 degrees C, and next to 1550-1800 degrees C. to form SiC.
FR7811534A 1977-04-23 1978-04-19 Graphite moulding with coating of silicon carbide - obtd. by reaction bonding, and providing resistance to attack by chemicals Granted FR2387922A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772718143 DE2718143C3 (en) 1977-04-23 1977-04-23 Process for the production of shaped bodies formed from graphite or from a graphite-like material with a protective layer made of carbide

Publications (2)

Publication Number Publication Date
FR2387922A1 true FR2387922A1 (en) 1978-11-17
FR2387922B1 FR2387922B1 (en) 1984-01-27

Family

ID=6007098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7811534A Granted FR2387922A1 (en) 1977-04-23 1978-04-19 Graphite moulding with coating of silicon carbide - obtd. by reaction bonding, and providing resistance to attack by chemicals

Country Status (3)

Country Link
JP (1) JPS53133208A (en)
DE (1) DE2718143C3 (en)
FR (1) FR2387922A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065865A2 (en) * 2007-11-20 2009-05-28 Ald Vacuum Technologies Gmbh Reflector graphite consisting of isotropic highly crystalline natural graphite as the main component and silicon or zirconium carbide, and production thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005587A1 (en) * 1980-02-15 1981-08-20 Kernforschungsanlage Jülich GmbH, 5170 Jülich METHOD FOR PRODUCING MOLDED BODIES
US4340636A (en) * 1980-07-30 1982-07-20 Avco Corporation Coated stoichiometric silicon carbide
US4702960A (en) * 1980-07-30 1987-10-27 Avco Corporation Surface treatment for carbon and product
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)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040252C3 (en) 1970-08-13 1974-05-30 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Process for the production of artificial graphite and graphite-like materials
DE2133044C3 (en) 1971-07-02 1975-10-02 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Process for the production of shaped bodies from synthetic graphite or materials similar to synthetic graphite
JPS5346770A (en) * 1976-10-12 1978-04-26 Citizen Watch Co Ltd Winding stem mounting and dismounting structure of wristwatches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065865A2 (en) * 2007-11-20 2009-05-28 Ald Vacuum Technologies Gmbh Reflector graphite consisting of isotropic highly crystalline natural graphite as the main component and silicon or zirconium carbide, and production thereof
WO2009065865A3 (en) * 2007-11-20 2009-11-26 Ald Vacuum Technologies Gmbh Reflector graphite consisting of isotropic highly crystalline natural graphite as the main component and silicon or zirconium carbide, and production thereof

Also Published As

Publication number Publication date
DE2718143A1 (en) 1978-11-16
JPS6348806B2 (en) 1988-09-30
DE2718143B2 (en) 1979-03-08
DE2718143C3 (en) 1979-10-31
FR2387922B1 (en) 1984-01-27
JPS53133208A (en) 1978-11-20

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