FR1079579A - Process for restoring, after machining, the surface porosity of a porous metallic body and cathode comprising such a metallic body - Google Patents

Process for restoring, after machining, the surface porosity of a porous metallic body and cathode comprising such a metallic body

Info

Publication number
FR1079579A
FR1079579A FR1079579DA FR1079579A FR 1079579 A FR1079579 A FR 1079579A FR 1079579D A FR1079579D A FR 1079579DA FR 1079579 A FR1079579 A FR 1079579A
Authority
FR
France
Prior art keywords
metallic body
restoring
machining
cathode
surface porosity
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
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1079579A publication Critical patent/FR1079579A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/08—Alloys with open or closed pores
    • 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Solid Thermionic Cathode (AREA)
FR1079579D 1952-06-26 1953-06-24 Process for restoring, after machining, the surface porosity of a porous metallic body and cathode comprising such a metallic body Expired FR1079579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US318054XA 1952-06-26 1952-06-26

Publications (1)

Publication Number Publication Date
FR1079579A true FR1079579A (en) 1954-12-01

Family

ID=21861485

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1079579D Expired FR1079579A (en) 1952-06-26 1953-06-24 Process for restoring, after machining, the surface porosity of a porous metallic body and cathode comprising such a metallic body

Country Status (5)

Country Link
BE (1) BE520936A (en)
CH (1) CH318054A (en)
FR (1) FR1079579A (en)
GB (1) GB726032A (en)
NL (1) NL81847C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110193601B (en) * 2019-06-13 2021-10-15 金堆城钼业股份有限公司 Preparation method of double-layer or multi-layer refractory metal composite pipe

Also Published As

Publication number Publication date
GB726032A (en) 1955-03-16
NL81847C (en)
BE520936A (en)
CH318054A (en) 1956-12-15

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