EP0263278A3 - Process for producing oxide cathode wires by cataphoresis coating - Google Patents

Process for producing oxide cathode wires by cataphoresis coating Download PDF

Info

Publication number
EP0263278A3
EP0263278A3 EP87112194A EP87112194A EP0263278A3 EP 0263278 A3 EP0263278 A3 EP 0263278A3 EP 87112194 A EP87112194 A EP 87112194A EP 87112194 A EP87112194 A EP 87112194A EP 0263278 A3 EP0263278 A3 EP 0263278A3
Authority
EP
European Patent Office
Prior art keywords
coating
oxide cathode
cathode wires
producing oxide
tungsten wire
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.)
Withdrawn
Application number
EP87112194A
Other languages
German (de)
French (fr)
Other versions
EP0263278A2 (en
Inventor
Herbert Hemminger
Michael Dr. Schlipf
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Graetz 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 Nokia Graetz GmbH filed Critical Nokia Graetz GmbH
Publication of EP0263278A2 publication Critical patent/EP0263278A2/en
Publication of EP0263278A3 publication Critical patent/EP0263278A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
    • C25D13/16—Wires; Strips; Foils
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/02—Electrophoretic coating characterised by the process with inorganic material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

Oxidkathodendrähte werden in der Weise hergestellt, daß ein Wolframdraht durch kataphoretisches Beschichten mit emissionsfähigem Material überzogen wird. Dabei ist es wichtig, daß die Beschichtung auf der ganzen Drahtoberfläche eine sehr gleichmäßige Dicke hat. Dies wird in einfacher Weise dadurch erzielt, daß am Anfang des Beschichtungsverfahrens die Stromrichtung kurzzeitig umgepolt wird, so daß der zu beschichtende Wolframdraht als Anode geschaltet ist. Die übrige Beschichtung erfolgt in bekannter Weise mit als Kathode geschaltetem Wolframdraht. Oxide cathode wires are made in such a way that a tungsten wire by cataphoretic coating with emitting material is coated. It is important that the coating all over Wire surface has a very uniform thickness. This is achieved in a simple manner in that at the beginning of the coating process the current direction briefly is reversed so that the tungsten wire to be coated is connected as an anode. The rest of the coating is done in a known manner with connected as the cathode Tungsten wire.

EP87112194A 1986-09-05 1987-08-22 Process for producing oxide cathode wires by cataphoresis coating Withdrawn EP0263278A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3630224 1986-09-05
DE3630224A DE3630224C2 (en) 1986-09-05 1986-09-05 Process for the production of oxide cathode wires by cataphoretic coating

Publications (2)

Publication Number Publication Date
EP0263278A2 EP0263278A2 (en) 1988-04-13
EP0263278A3 true EP0263278A3 (en) 1988-12-07

Family

ID=6308963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112194A Withdrawn EP0263278A3 (en) 1986-09-05 1987-08-22 Process for producing oxide cathode wires by cataphoresis coating

Country Status (4)

Country Link
US (1) US4806218A (en)
EP (1) EP0263278A3 (en)
JP (1) JPS6376228A (en)
DE (1) DE3630224C2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219828A (en) * 1990-10-01 1993-06-15 Sharp Kabushiki Kaisha Method for fabricating oxide superconducting coatings
US5310464A (en) * 1991-01-04 1994-05-10 Redepenning Jody G Electrocrystallization of strongly adherent brushite coatings on prosthetic alloys
US5817223A (en) * 1996-08-30 1998-10-06 United Technologies Corporation Method of producing a fiber tow reinforced metal matrix composite
GB0208642D0 (en) * 2002-04-16 2002-05-22 Accentus Plc Metal implants
GB0405680D0 (en) * 2004-03-13 2004-04-21 Accentus Plc Metal implants
WO2007117499A2 (en) * 2006-04-05 2007-10-18 University Of Nebraska Bioresorbable polymer reconstituted bone and methods of formation thereof
WO2007144667A2 (en) * 2006-06-12 2007-12-21 Accentus Plc Metal implants
KR20090099088A (en) * 2007-01-15 2009-09-21 액센투스 피엘씨 Metal implants
JP5287861B2 (en) 2007-10-03 2013-09-11 アクセンタス メディカル リミテッド Method for producing metal with biocidal properties
CN104008940B (en) * 2014-04-28 2016-04-27 安徽华东光电技术研究所 A kind of X-band space travelling wave tube cathode filament electrophoresis method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2149561A1 (en) * 1971-08-18 1973-03-30 Philips Nv

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026780A (en) * 1976-04-05 1977-05-31 Rca Corporation Method and apparatus for cataphoretic deposition
US4100449A (en) * 1976-04-05 1978-07-11 Rca Corporation Uniform filament and method of making the same
NL7810808A (en) * 1978-10-31 1980-05-02 Philips Nv DEVICE AND METHOD FOR MANUFACTURING CATHODS
US4487673A (en) * 1982-04-21 1984-12-11 Rca Corporation Method of making a line cathode having localized emissive coating

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2149561A1 (en) * 1971-08-18 1973-03-30 Philips Nv

Also Published As

Publication number Publication date
DE3630224C2 (en) 1994-01-05
EP0263278A2 (en) 1988-04-13
DE3630224A1 (en) 1988-03-17
US4806218A (en) 1989-02-21
JPS6376228A (en) 1988-04-06
JPH0426174B2 (en) 1992-05-06

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Inventor name: HEMMINGER, HERBERT

Inventor name: SCHLIPF, MICHAEL, DR.