GB504078A - Improvements in and relating to methods of cementing carbon bodies - Google Patents

Improvements in and relating to methods of cementing carbon bodies

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Publication number
GB504078A
GB504078A GB11225/38A GB1122538A GB504078A GB 504078 A GB504078 A GB 504078A GB 11225/38 A GB11225/38 A GB 11225/38A GB 1122538 A GB1122538 A GB 1122538A GB 504078 A GB504078 A GB 504078A
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GB
United Kingdom
Prior art keywords
carbon
parts
carbide
cement
metal
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
GB11225/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB504078A publication Critical patent/GB504078A/en
Expired legal-status Critical Current

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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C—CHEMISTRY; METALLURGY
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/636—Polysaccharides or derivatives thereof
    • C04B35/6365—Cellulose or derivatives thereof
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • C04B37/006—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of metals or metal salts
    • C—CHEMISTRY; METALLURGY
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/025—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of glass or ceramic material
    • C—CHEMISTRY; METALLURGY
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    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/026—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/404—Refractory metals
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/604—Pressing at temperatures other than sintering temperatures
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    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/606—Drying
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time
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    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04—Ceramic interlayers
    • C04B2237/06—Oxidic interlayers
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    • C04B2237/08—Non-oxidic interlayers
    • C04B2237/083—Carbide interlayers, e.g. silicon carbide interlayers
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    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
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    • C04B2237/122—Metallic interlayers based on refractory metals
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    • C04B2237/126—Metallic interlayers wherein the active component for bonding is not the largest fraction of the interlayer
    • C04B2237/127—The active component for bonding being a refractory metal
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    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
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    • C04B2237/36—Non-oxidic
    • C04B2237/363—Carbon
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    • C04B2237/405—Iron metal group, e.g. Co or Ni
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    • C04B2237/72—Forming laminates or joined articles comprising at least two interlayers directly next to each other
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    • C04B2237/765—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc at least one member being a tube
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    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/88—Joining of two substrates, where a substantial part of the joining material is present outside of the joint, leading to an outside joining of the joint
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical
    • H01J2893/0021—Chemical composition and manufacture chemical carbon

Abstract

504,078. Direct connections between conductors. BRITISH THOMSON-HOUSTON CO., Ltd. April 12, 1938, No. 11225. Convention date, April 14, 1937. (Class 38 (i) [Also in Groups V and II] A method of cementing carbon to carbon or to a metal or alloy which with carbon will form a carbide or with a carbide will form an alloy, consists in coating the surfaces to be joined with a cementing composition comprising a carbonaceous agglutinant and powdered metal which with carbon will form a carbide or with a carbide will form an alloy, assembling the parts in position, and heating in a non-oxidizing atmosphere at a temperature and for a period sufficient to convert the cement into a bonding compound of carbon and metal. Examples of suitable metals in the cement are iron, cobalt, chromium, molybdenum, tungsten, uranium, vanadium, columbium, tantalum, titanium, zirconium, thorium and alloys of these metals. Examples of carbonaceous agglutinants are animal vegetable or mineral oils and carbohydrates such as sugars, starch and cellulose. In an example, a cement for uniting shaped parts of carbon and molybdenum comprises 80-90 parts of pure iron powder e.g. hydrogen reduced iron, and 20-30 parts of saturated sugar solution. The surfaces to be joined are coated with the paste the parts are assembled and with or without air drying, are heated in a non-oxidizing atmosphere e.g. to 1250-1450‹ C. for 2-10 minutes or more, to convert the cement, into an iron carbon compound. The invention is specially applicable for joiring shaped carbon or graphite parts to tungsten or molybdenum parts in electrical apparatus e.g. molybdenurn, rods or leads to graphite electrodes. The Specification as open to inspection under Sect. 91, comprises also the coating of shaped graphite bodies with metal by applying the cementing paste and firing in a non-oxidizing atmosphere. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 12153/06, [Class 83].
GB11225/38A 1937-04-14 1938-04-12 Improvements in and relating to methods of cementing carbon bodies Expired GB504078A (en)

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US504078XA 1937-04-14 1937-04-14

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146321A2 (en) * 1983-12-09 1985-06-26 Hitachi, Ltd. Ceramic composite article and process for the production thereof
EP0422778A1 (en) * 1989-10-10 1991-04-17 Ronald Carlysle Wiand Improved method of brazing of diamond to substrate
WO1997019035A1 (en) * 1995-11-20 1997-05-29 Alliedsignal Inc. Joining of rough carbon-carbon composites with high joint strength
US7858187B2 (en) 2006-03-29 2010-12-28 Honeywell International Inc. Bonding of carbon-carbon composites using titanium carbide
US7922845B2 (en) 2006-03-29 2011-04-12 Honeywell International Inc. Apparatus and methods for bonding carbon-carbon composites through a reactant layer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146321A2 (en) * 1983-12-09 1985-06-26 Hitachi, Ltd. Ceramic composite article and process for the production thereof
EP0146321A3 (en) * 1983-12-09 1987-05-27 Hitachi, Ltd. Ceramic composite article and process for the production thereof
EP0422778A1 (en) * 1989-10-10 1991-04-17 Ronald Carlysle Wiand Improved method of brazing of diamond to substrate
WO1997019035A1 (en) * 1995-11-20 1997-05-29 Alliedsignal Inc. Joining of rough carbon-carbon composites with high joint strength
US5972157A (en) * 1995-11-20 1999-10-26 Alliedsignal Inc. Joining of rough carbon-carbon composites with high joint strength
US7858187B2 (en) 2006-03-29 2010-12-28 Honeywell International Inc. Bonding of carbon-carbon composites using titanium carbide
US7922845B2 (en) 2006-03-29 2011-04-12 Honeywell International Inc. Apparatus and methods for bonding carbon-carbon composites through a reactant layer
US8448685B2 (en) 2006-03-29 2013-05-28 Honeywell International Inc. Bonding carbon-carbon composites through a reactant layer

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