GB836141A - Improvements in or relating to electrically heated vacuum furnaces - Google Patents

Improvements in or relating to electrically heated vacuum furnaces

Info

Publication number
GB836141A
GB836141A GB14108/57A GB1410857A GB836141A GB 836141 A GB836141 A GB 836141A GB 14108/57 A GB14108/57 A GB 14108/57A GB 1410857 A GB1410857 A GB 1410857A GB 836141 A GB836141 A GB 836141A
Authority
GB
United Kingdom
Prior art keywords
cathode
crucible
relating
electrically heated
chamber
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
GB14108/57A
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.)
Stauffer Chemical Co
Original Assignee
Stauffer Chemical Co
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 Stauffer Chemical Co filed Critical Stauffer Chemical Co
Publication of GB836141A publication Critical patent/GB836141A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32018—Glow discharge
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/22—Remelting metals with heating by wave energy or particle radiation
    • C22B9/228—Remelting metals with heating by wave energy or particle radiation by particle radiation, e.g. electron beams
    • 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
    • H01J19/68—Specified gas introduced into the tube at low pressure, e.g. for reducing or influencing space charge

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

836,141. Discharge apparatus. STAUFFER CHEMICAL CO. May 3, 1957 [July 27, 1956], No. 14108/57. Class 39(1). [Also in Group XI] Apparatus for heating a crucible (see Group XI) includes an annular directly or indirectly heated cathode 21 surrounding a crucible 15 and a glow discharge is set up between them, argon being supplied through a pipe 27<SP>1</SP> to maintain such a pressure, e.g. a few microns in a chamber 11 containing the crucible and cathode as to supply ions, which prevent the glow discharge passing into an arc and tend to neutralise the space charge. The cathode 21 is surrounded by heat shields 47. The walls of the chamber 11 may be of conducting material and if maintained at cathode potential serve as focusing electrodes.
GB14108/57A 1956-07-27 1957-05-03 Improvements in or relating to electrically heated vacuum furnaces Expired GB836141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US836141XA 1956-07-27 1956-07-27

Publications (1)

Publication Number Publication Date
GB836141A true GB836141A (en) 1960-06-01

Family

ID=22179519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14108/57A Expired GB836141A (en) 1956-07-27 1957-05-03 Improvements in or relating to electrically heated vacuum furnaces

Country Status (1)

Country Link
GB (1) GB836141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176337B (en) * 1985-06-04 1990-02-14 English Electric Valve Co Ltd Metal vapour laser apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176337B (en) * 1985-06-04 1990-02-14 English Electric Valve Co Ltd Metal vapour laser apparatus

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