GB471064A - Improvements in or relating to electric discharge devices - Google Patents

Improvements in or relating to electric discharge devices

Info

Publication number
GB471064A
GB471064A GB550336A GB550336A GB471064A GB 471064 A GB471064 A GB 471064A GB 550336 A GB550336 A GB 550336A GB 550336 A GB550336 A GB 550336A GB 471064 A GB471064 A GB 471064A
Authority
GB
United Kingdom
Prior art keywords
electric discharge
alumina
discharge devices
per cent
relating
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
GB550336A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB550336A priority Critical patent/GB471064A/en
Publication of GB471064A publication Critical patent/GB471064A/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
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/001—Joining burned ceramic articles with other burned ceramic articles or other articles by heating directly with other burned ceramic articles
    • 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
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/04—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with articles made from glass
    • C04B37/042—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with articles made from glass in a direct manner
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • C04B2237/341—Silica or silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

In electric discharge devices in which the leads pass through a plate of ceramic material which is sealed to quartz or to a glass which has about the same coefficient of expansion as quartz, the ceramic material is composed of pure silica, alumina and magnesia, mixed and fired to give a homogeneous mass. The material may consist of 55 per cent silica, 35 per cent alumina and 10 per cent magnesia. During the sealing the plate may be supported in a refractory mould of alumina. Specifications 282,402, [Class 22], 390,269, 409,315, and 446,106 are referred to.
GB550336A 1936-02-24 1936-02-24 Improvements in or relating to electric discharge devices Expired GB471064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB550336A GB471064A (en) 1936-02-24 1936-02-24 Improvements in or relating to electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB550336A GB471064A (en) 1936-02-24 1936-02-24 Improvements in or relating to electric discharge devices

Publications (1)

Publication Number Publication Date
GB471064A true GB471064A (en) 1937-08-24

Family

ID=9797436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB550336A Expired GB471064A (en) 1936-02-24 1936-02-24 Improvements in or relating to electric discharge devices

Country Status (1)

Country Link
GB (1) GB471064A (en)

Similar Documents

Publication Publication Date Title
GB1066804A (en) Improvements relating to closure arrangements for ceramic envelopes
GB658799A (en) Improvements in or relating to electric discharge lamps
GB471064A (en) Improvements in or relating to electric discharge devices
GB591243A (en) Method of manufacture of refractory products having a base of pure silica
GB468456A (en) Improvements in or relating to the production of magnesite bricks
GB450583A (en) Improvements in receptacles for containing glass during manufacture
GB659260A (en) Improvements in refractory bricks having a high heat conductivity
GB282403A (en) Improved process for reducing the coefficient of expansion of ceramic materials
GB594394A (en) Improvements in crystal contacts of which one element is silicon
GB424442A (en) Improvements in and relating to the preparation of fused glass-ceramic joints
GB801130A (en) Ceramic arcing plate material
AU1609734A (en) Improvements in or relating to discharge tubes or incandescent lamps partly consisting of vacuum-tight ceramic material
GB681180A (en) Improvements in or relating to the manufacture of electric discharge devices
GB998583A (en) Improvements in or relating to sodium vapour electric discharge lamps
GB482307A (en) Improvements in or relating to alkali silicate cements and articles bonded by such cements
Amberg EFFECT OF ADDITIONS OF DIOPSIDE ON PROPERTIES OF WALL‐TILE BODY
GB1274709A (en) Shaped articles containing silicon carbide for cupolas
GB504062A (en) Improvements in refractory glasses
GB541544A (en) Improvements in or relating to refractory castings for glass making and other apparatus
GB542550A (en) Improved manufacture of heat cast refractories
GB476393A (en) Improvements relating to the production of ceramic materials
GB500575A (en) Repairing cement for ceramic objects
GB454946A (en) Improvements in or relating to rotary cement and lime kilns
AU160696B2 (en) Improvements in or relating tothe manufacture of alumina hydrosols and alimina and silica hydrosols
GB517654A (en) Improvements in and connected with plaster-of-paris