GB1203547A - Improvements in or relating to the evolution of alkali metal vapours in vacuo - Google Patents

Improvements in or relating to the evolution of alkali metal vapours in vacuo

Info

Publication number
GB1203547A
GB1203547A GB1301369A GB1301369A GB1203547A GB 1203547 A GB1203547 A GB 1203547A GB 1301369 A GB1301369 A GB 1301369A GB 1301369 A GB1301369 A GB 1301369A GB 1203547 A GB1203547 A GB 1203547A
Authority
GB
United Kingdom
Prior art keywords
tube
alkali metal
mixture
alloy
temperature
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
GB1301369A
Inventor
Paolo Della Porta
Elio Rabusin
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.)
SAES Getters SpA
Original Assignee
SAES Getters SpA
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 SAES Getters SpA filed Critical SAES Getters SpA
Publication of GB1203547A publication Critical patent/GB1203547A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C16/00—Alloys based on zirconium
    • 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
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

1,203,547. Discharge tubes. S.A.E.S. GETTERS S.p.A. 12 March, 1969 [23 Jan., 1969], No. 13013/69. Heading H1D. [Also in Division C7] A mixture adapted to evolve vapours of an alkali metal comprises as sole constituents an alkali metal compound and a Zr-Al alloy as a reducing agent. The compound, e.g. a chromate, and the alloy (see Division C7) are preferably both finely divided so as to pass through a screen having at least 254 meshes per cm. A light-sensitive surface may be formed in a television camera tube, a photomultiplier tube, an electronic viewfinder, an image converter tube, or an image intensifier for radiological purposes by placing in the tube a slit dispenser of Ni-Cr V alloy containing the mixture, sealing the tube and connecting it to a vacuum pump, heating the tube to a temperature of between 300‹ to 400‹ C. for 1 to 8 hours whilst continually evacuating the tube of any residual gases, and finally heating the said mixture to a temperature in the range of 450-1000‹ C.
GB1301369A 1969-01-23 1969-03-12 Improvements in or relating to the evolution of alkali metal vapours in vacuo Expired GB1203547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1193269 1969-01-23

Publications (1)

Publication Number Publication Date
GB1203547A true GB1203547A (en) 1970-08-26

Family

ID=11138727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1301369A Expired GB1203547A (en) 1969-01-23 1969-03-12 Improvements in or relating to the evolution of alkali metal vapours in vacuo

Country Status (5)

Country Link
JP (1) JPS5019236B1 (en)
DE (1) DE1912112A1 (en)
FR (1) FR2028912A1 (en)
GB (1) GB1203547A (en)
NL (1) NL6903877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598844A1 (en) * 2003-01-17 2005-11-23 Hamamatsu Photonics K. K. Alkali metal generating agent, alkali metal generator, photoelectric surface, secondary electron emission surface, electron tube, method for manufacturing photoelectric surface, method for manufacturing secondary electron emission surface, and method for manufacturing electron tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598844A1 (en) * 2003-01-17 2005-11-23 Hamamatsu Photonics K. K. Alkali metal generating agent, alkali metal generator, photoelectric surface, secondary electron emission surface, electron tube, method for manufacturing photoelectric surface, method for manufacturing secondary electron emission surface, and method for manufacturing electron tube
EP1598844A4 (en) * 2003-01-17 2006-12-06 Hamamatsu Photonics Kk Alkali metal generating agent, alkali metal generator, photoelectric surface, secondary electron emission surface, electron tube, method for manufacturing photoelectric surface, method for manufacturing secondary electron emission surface, and method for manufacturing electron tube
US7772771B2 (en) 2003-01-17 2010-08-10 Hamamatsu Photonics K.K. Alkali metal generating agent, alkali metal generator, photoelectric surface, secondary electron emission surface, electron tube, method for manufacturing photoelectric surface, method for manufacturing secondary electron emission surface, and method for manufacturing electron tube

Also Published As

Publication number Publication date
FR2028912A1 (en) 1970-10-16
NL6903877A (en) 1970-07-27
JPS5019236B1 (en) 1975-07-04
DE1912112A1 (en) 1972-01-05

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Legal Events

Date Code Title Description
PS Patent sealed