EP0204909B1 - Elektrodenmaterial für eine Funkenstrecke - Google Patents

Elektrodenmaterial für eine Funkenstrecke Download PDF

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Publication number
EP0204909B1
EP0204909B1 EP19860104346 EP86104346A EP0204909B1 EP 0204909 B1 EP0204909 B1 EP 0204909B1 EP 19860104346 EP19860104346 EP 19860104346 EP 86104346 A EP86104346 A EP 86104346A EP 0204909 B1 EP0204909 B1 EP 0204909B1
Authority
EP
European Patent Office
Prior art keywords
tungsten
phase
sintered
electrode material
electrodes
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
EP19860104346
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0204909A1 (de
Inventor
Sylvia Härdtle
Rainer Dr. Schmidberger
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.)
Dornier GmbH
Original Assignee
Dornier GmbH
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 Dornier GmbH filed Critical Dornier GmbH
Publication of EP0204909A1 publication Critical patent/EP0204909A1/de
Application granted granted Critical
Publication of EP0204909B1 publication Critical patent/EP0204909B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • G10K15/06—Sound-producing devices using electric discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/24—Selection of materials for electrodes

Definitions

  • DE-A-2 635 635 is a spark gap with two electrodes protruding from a holder, one electrode being extended and returned via a loop so that the electrodes are axially opposite one another.
  • the materials for the electrode tips include Tantalum and tungsten suggested.
  • the electrodes are subject to high thermal and mechanical loads. Although tantalum has a high thermal erosion resistance, its mechanical strength is not sufficient for a long service life, i.e. for the generation of a large number of underwater spark discharges. In this special application, tungsten also does not have a long service life due to its high brittleness. It is destroyed very quickly by the mechanical load.
  • one or more of the metals from the group Ni, Cu, Ag, Fe, Co, Mo or Re are proposed as alloying elements.
  • the literature does not mention any electrical or thermal properties such as electrical or thermal conductivity, resistance to erosion, ignition behavior, scaling behavior, resistance to corrosion or oxidation, which would suggest transfer of the material from the defense technology to electrodes or spark gaps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Surgical Instruments (AREA)
EP19860104346 1985-05-29 1986-05-09 Elektrodenmaterial für eine Funkenstrecke Expired EP0204909B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3519163 1985-05-29
DE19853519163 DE3519163A1 (de) 1985-05-29 1985-05-29 Elektrodenmaterial fuer eine funkenstrecke

Publications (2)

Publication Number Publication Date
EP0204909A1 EP0204909A1 (de) 1986-12-17
EP0204909B1 true EP0204909B1 (de) 1989-11-08

Family

ID=6271862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860104346 Expired EP0204909B1 (de) 1985-05-29 1986-05-09 Elektrodenmaterial für eine Funkenstrecke

Country Status (3)

Country Link
EP (1) EP0204909B1 (enrdf_load_stackoverflow)
JP (1) JPS61276549A (enrdf_load_stackoverflow)
DE (1) DE3519163A1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008071A (en) * 1988-01-04 1991-04-16 Gte Products Corporation Method for producing improved tungsten nickel iron alloys
EP0326713A1 (en) * 1988-01-04 1989-08-09 GTE Products Corporation Improved tungsten nickel iron alloys
FR2649252B1 (fr) * 1989-06-30 1993-01-15 Technomed Int Sa Procede et dispositif de decharge d'un arc electrique dans un liquide electriquement conducteur et application au lithotrypteur
FR2673492B1 (fr) * 1991-03-01 1993-06-18 Technomed Int Sa Electrode en alliage refractaire hautement allie et appareil de generation d'onde de pression en comportant application.
DE4318827C2 (de) * 1993-06-07 1996-08-08 Nwm De Kruithoorn Bv Schwermetallegierung und Verfahren zu ihrer Herstellung
US6045601A (en) * 1999-09-09 2000-04-04 Advanced Materials Technologies, Pte, Ltd. Non-magnetic, high density alloy
DE10112461C2 (de) * 2001-03-15 2003-12-24 Hmt Ag Vorrichtung zur Erzeugung elektrischer Entladungen in einem wässrigen Medium
CN104889384A (zh) * 2015-06-10 2015-09-09 深圳市威勒达科技开发有限公司 一种W-Re复合粉末材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1102450A (en) * 1965-04-06 1968-02-07 Yury Grigorievich Ediny Instrument for crushing stones in urinary bladder
DE1297870B (de) * 1966-03-31 1969-06-19 Hermsdorf Keramik Veb Verfahren zur pulvermetallurgischen Herstellung einer quaternaeren Wolframlegierung mit verbesserter Bruchdehnung
US3745000A (en) * 1970-10-22 1973-07-10 Gte Sylvania Inc Process for producing tungsten-alloy emitter type electrode
US4012230A (en) * 1975-07-07 1977-03-15 The United States Of America As Represented By The United States Energy Research And Development Administration Tungsten-nickel-cobalt alloy and method of producing same
DE2635635C3 (de) * 1976-08-07 1979-05-31 Dornier System Gmbh, 7990 Friedrichshafen Funkenstrecke zur Erzeugung von Stoßwellen für die berührungsfreie Zerstörung von Konkrementen in Körpern von Lebewesen
DE3226648C2 (de) * 1982-07-16 1984-12-06 Dornier System Gmbh, 7990 Friedrichshafen Heterogenes Wolfram-Legierungspulver

Also Published As

Publication number Publication date
DE3519163A1 (de) 1986-12-04
EP0204909A1 (de) 1986-12-17
DE3519163C2 (enrdf_load_stackoverflow) 1987-03-26
JPS61276549A (ja) 1986-12-06

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