US3549408A - Impregnation of a material based on carbon by molten metals - Google Patents

Impregnation of a material based on carbon by molten metals Download PDF

Info

Publication number
US3549408A
US3549408A US709787A US3549408DA US3549408A US 3549408 A US3549408 A US 3549408A US 709787 A US709787 A US 709787A US 3549408D A US3549408D A US 3549408DA US 3549408 A US3549408 A US 3549408A
Authority
US
United States
Prior art keywords
carbon
metal
impregnation
molten metal
porosity
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 - Lifetime
Application number
US709787A
Other languages
English (en)
Inventor
Roger Bonne
Maurice Jacquot
Jacques Fourre
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.)
Mersen SA
Original Assignee
Carbone Lorraine SA
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 Carbone Lorraine SA filed Critical Carbone Lorraine SA
Application granted granted Critical
Publication of US3549408A publication Critical patent/US3549408A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • 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
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • C04B41/5183—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal inorganic
    • 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
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • 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
    • C04B41/88—Metals
    • 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
    • C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/97—Rocket nozzles
    • F02K9/974—Nozzle- linings; Ablative coatings

Definitions

  • the invention relates to a method of impregnating carbon or graphite with metal by forcing molten metal into the pores under pressure, in which method the pressure necessary for impregnation is lowered and the force which tends to cause the metal to re-emerge is reduced by applying boric acid or ammonium phosphate to lower the surface tension of the metal-carbon couple.
  • Application may be by previous introduction into the carbon and a preferred amount is from 0.05 to 5% by Weight of impregnated product.
  • the method of impregnating carbon, e.g. graphite with metal by forcing molten metal into the pores under pressure is improved by applying a surface tension lowering substance.
  • This substance may be applied to the carbon, e.g. graphite prior to the injection of the molten metal.
  • the substance may be boric acid or ammonium phosphate amounting to 0.05 to 5% by weight of the product.
  • the present invention relates to a method of impregnating carbon material with molten metal and to the products thereof.
  • the surface tension of the molten metal A is responsible for a force 3 tending to cause the metal to emerge from the tube and equal to:
  • the porosity of a block of industrial carbon may be likened to channels of circular section.
  • a pressure which depends upon the minimal diameter of the channels.
  • a method of impregnating carbon with metal by forcing the molten metal into the carbon comprising applying to the carbon a substance selected from the group consisting of boric acid and ammonium phosphate and comprising between 0.05 and 5% by weight of the treated carbon, which lowers the surface tension of the metalcarbon couple.
  • the content of boric acid or ammonium phosphate may vary from 0.05 to 5%, expressed as ratio by weight.
  • the two carbons had the same characteristics of porosity, viz, 35%, and the carbon with boric acid contained 0.45% boron after baking.
  • the improvement comprising applying to the carbon a substance selected from the group consisting of boric acid and ammonium phosphate and comprising between 0.05 and 5% by weight of the treated carbon, which lowers the surface tension of the metal-carbon couple.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Ceramic Products (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
US709787A 1967-04-14 1968-03-01 Impregnation of a material based on carbon by molten metals Expired - Lifetime US3549408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR102782A FR1526317A (fr) 1967-04-14 1967-04-14 Perfectionnement à l'imprégnation d'un matériau à base de carbone par les métaux fondus

Publications (1)

Publication Number Publication Date
US3549408A true US3549408A (en) 1970-12-22

Family

ID=8628894

Family Applications (1)

Application Number Title Priority Date Filing Date
US709787A Expired - Lifetime US3549408A (en) 1967-04-14 1968-03-01 Impregnation of a material based on carbon by molten metals

Country Status (4)

Country Link
US (1) US3549408A (de)
DE (1) DE1771097C3 (de)
FR (1) FR1526317A (de)
GB (1) GB1201702A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627571A (en) * 1970-05-28 1971-12-14 Monsanto Res Corp Heat treatment of graphite fibers
US4469654A (en) * 1980-02-06 1984-09-04 Minnesota Mining And Manufacturing Company EDM Electrodes
US4617203A (en) * 1985-04-08 1986-10-14 Hughes Aircraft Company Preparation of liquid metal source structures for use in ion beam evaporation of boron-containing alloys
US4617053A (en) * 1985-09-20 1986-10-14 Great Lakes Carbon Corporation Metal reinforced porous refractory hard metal bodies
WO2004074189A1 (en) * 2003-02-18 2004-09-02 Morganite Electrical Carbon Limited Electrode materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240709A1 (de) * 1982-11-04 1984-05-10 Ringsdorff-Werke GmbH, 5300 Bonn Impraegnierter kohlenstoffkoerper
US4530853A (en) * 1984-06-06 1985-07-23 Great Lakes Carbon Corporation Non-conducting oxidation retardant coating composition for carbon and graphite

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422215A (en) * 1942-05-12 1947-06-17 Exolon Company Method of vitreous coating refractory material
US2983034A (en) * 1959-11-25 1961-05-09 Ford Motor Co Metal graphite compacts
CA669472A (en) * 1963-08-27 Michael Humenik, Jr. Graphite structure
US3160519A (en) * 1959-07-29 1964-12-08 Lorraine Carbone Nozzle material for jet-propelled rockets
US3288573A (en) * 1960-10-03 1966-11-29 Polycarbide Corp High temperature resistant member and process for forming
US3390013A (en) * 1964-03-06 1968-06-25 Siemens Planiawerke Ag High-temperature resistant structural body
US3396054A (en) * 1963-03-18 1968-08-06 Lorraine Carbone Method and apparatus for metallic impregnation of carbon and graphite

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA669472A (en) * 1963-08-27 Michael Humenik, Jr. Graphite structure
US2422215A (en) * 1942-05-12 1947-06-17 Exolon Company Method of vitreous coating refractory material
US3160519A (en) * 1959-07-29 1964-12-08 Lorraine Carbone Nozzle material for jet-propelled rockets
US2983034A (en) * 1959-11-25 1961-05-09 Ford Motor Co Metal graphite compacts
US3288573A (en) * 1960-10-03 1966-11-29 Polycarbide Corp High temperature resistant member and process for forming
US3396054A (en) * 1963-03-18 1968-08-06 Lorraine Carbone Method and apparatus for metallic impregnation of carbon and graphite
US3390013A (en) * 1964-03-06 1968-06-25 Siemens Planiawerke Ag High-temperature resistant structural body

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627571A (en) * 1970-05-28 1971-12-14 Monsanto Res Corp Heat treatment of graphite fibers
US4469654A (en) * 1980-02-06 1984-09-04 Minnesota Mining And Manufacturing Company EDM Electrodes
US4617203A (en) * 1985-04-08 1986-10-14 Hughes Aircraft Company Preparation of liquid metal source structures for use in ion beam evaporation of boron-containing alloys
US4617053A (en) * 1985-09-20 1986-10-14 Great Lakes Carbon Corporation Metal reinforced porous refractory hard metal bodies
WO2004074189A1 (en) * 2003-02-18 2004-09-02 Morganite Electrical Carbon Limited Electrode materials

Also Published As

Publication number Publication date
GB1201702A (en) 1970-08-12
FR1526317A (fr) 1968-05-24
DE1771097C3 (de) 1974-05-16
DE1771097A1 (de) 1972-02-24
DE1771097B2 (de) 1973-10-04

Similar Documents

Publication Publication Date Title
US3084394A (en) Method of making carbon articles
US3549408A (en) Impregnation of a material based on carbon by molten metals
DE2203592B2 (de) Verfahren zum Herstellen einer kohlenstoffhaltigen Wabenstruktur
US2252277A (en) Molded porous electrical brush and the like
DE1290642B (de) Nippelverbindung von Kohle- oder Graphitelektroden
DE2504931A1 (de) Verfahren zum herstellen eines reibteiles
GB1493239A (en) Gas tight silicon carbide body
US3089195A (en) Process for producing a shaped graphite article
DE2301426C2 (de) Verfahren zur Herstellung heißgepresster Gegenstände aus Siliciumnitrid und Vorrichtung
DE2754461C2 (de) Verfahren zum Herstellen einer geformten abreibbaren Masse und damit erhältliches leicht bearbeitbares Material
DE1565344A1 (de) Verfahren zur Herstellung von Widerstandsheizelementen
US4100314A (en) Method for increasing the strength and density of carbonaceous products
US1819364A (en) Hot top
US1836196A (en) Method of treating molten materials
DE1078927B (de) Kohlekoerper, insbesondere Graphitkoerper fuer Kernreaktoren, und Verfahren zu ihrerHerstellung
US2972552A (en) All carbon impervious graphite and carbon articles
US2027532A (en) Powder metallurgy
GB1329676A (en) Process for making friction material arcuate lining segments in particular for brakes
US3594455A (en) Methods for manufacturing carbon and/or graphite materials
US3505090A (en) Process for the production of carbon articles
US2356076A (en) Porous brush and method of manufacture
DE2718143C3 (de) Verfahren zur Herstellung von aus Graphit oder aus graphitähnlichem Werkstoff gebildeten Formkörper mit einer Schutzschicht aus Karbid
US4894287A (en) Densified carbonaceous bodies
US2897102A (en) Oxidation resistant graphite and method for making the same
US2409818A (en) Brush and art of commutation