GB1456462A - Pyrolytic graphite articles - Google Patents

Pyrolytic graphite articles

Info

Publication number
GB1456462A
GB1456462A GB2899874A GB2899874A GB1456462A GB 1456462 A GB1456462 A GB 1456462A GB 2899874 A GB2899874 A GB 2899874A GB 2899874 A GB2899874 A GB 2899874A GB 1456462 A GB1456462 A GB 1456462A
Authority
GB
United Kingdom
Prior art keywords
pyrolytic graphite
abrasion
blank
layer
perforate
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
GB2899874A
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve 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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB2899874A priority Critical patent/GB1456462A/en
Priority to DE19742439698 priority patent/DE2439698B2/en
Priority to FR7520035A priority patent/FR2276263A1/en
Publication of GB1456462A publication Critical patent/GB1456462A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

1456462 Blasting ENGLISH ELECTRIC VALVE CO Ltd 11 April 1975 [29 June 1974] 28998/74 Heading B3D [Also in Division C1] A perforate article is prepared from a laminar blank of pyrolytic graphite by a process which includes the steps of machining or abrading selected locations of the blank to produce perforations therein, and thereafter depositing a layer of pyrolytic graphite thereon. The abrasion process is preferably one employing shot abrasion techniques, and is used, for example, to prepare the perforate mesh electrodes (see Fig. 1). The thickness of the layer of secondarily deposited graphite is preferably less than that of the laminar blank, and may be comparable to the size of the particles used in the abrasion process.
GB2899874A 1974-06-29 1974-06-29 Pyrolytic graphite articles Expired GB1456462A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2899874A GB1456462A (en) 1974-06-29 1974-06-29 Pyrolytic graphite articles
DE19742439698 DE2439698B2 (en) 1974-06-29 1974-08-19 PROCESS FOR MANUFACTURING A HIGH VOLTAGE PERFORATED COMPONENT FROM PYROLYTIC GRAPHITE
FR7520035A FR2276263A1 (en) 1974-06-29 1975-06-26 IMPROVEMENTS RELATING TO PYROLYTIC GRAPHITE OBJECTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2899874A GB1456462A (en) 1974-06-29 1974-06-29 Pyrolytic graphite articles

Publications (1)

Publication Number Publication Date
GB1456462A true GB1456462A (en) 1976-11-24

Family

ID=10284626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2899874A Expired GB1456462A (en) 1974-06-29 1974-06-29 Pyrolytic graphite articles

Country Status (3)

Country Link
DE (1) DE2439698B2 (en)
FR (1) FR2276263A1 (en)
GB (1) GB1456462A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1534551A (en) * 1976-10-21 1978-12-06 English Electric Valve Co Ltd Electrodes

Also Published As

Publication number Publication date
DE2439698B2 (en) 1976-09-02
DE2439698A1 (en) 1976-01-08
FR2276263A1 (en) 1976-01-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940411