WO2008060775A3 - Improved process for producing a rotary anode and the anode produced by such process - Google Patents

Improved process for producing a rotary anode and the anode produced by such process Download PDF

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Publication number
WO2008060775A3
WO2008060775A3 PCT/US2007/080286 US2007080286W WO2008060775A3 WO 2008060775 A3 WO2008060775 A3 WO 2008060775A3 US 2007080286 W US2007080286 W US 2007080286W WO 2008060775 A3 WO2008060775 A3 WO 2008060775A3
Authority
WO
WIPO (PCT)
Prior art keywords
anode
support member
tungsten
produced
producing
Prior art date
Application number
PCT/US2007/080286
Other languages
French (fr)
Other versions
WO2008060775A2 (en
Inventor
Leah F Haywiser
Leonid N Shekhter
Original Assignee
Starck H C Inc
Leah F Haywiser
Leonid N Shekhter
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 Starck H C Inc, Leah F Haywiser, Leonid N Shekhter filed Critical Starck H C Inc
Publication of WO2008060775A2 publication Critical patent/WO2008060775A2/en
Publication of WO2008060775A3 publication Critical patent/WO2008060775A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134—Plasma spraying
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/108—Substrates for and bonding of emissive target, e.g. composite structures

Abstract

The present invention is directed to an improved process for manufacturing a rotary anode for an x-ray tube, said rotary anode comprising a molybdenum support member on which a target layer consisting essentially of tungsten or a tungsten-rhenium alloy is provided by plasma spraying, the improvement comprising: a) preheating the support member to a temperature of from 1150°C to 1600°C, b) placing the support member in a gaseous atmosphere containing hydrogen and having a pressure of from 0.5 to 0.9 bars and wherein hydrogen is present in a molar ratio of hydrogen to tungsten dioxide of from 5:1 to 50:1, and c) plasma spraying the target layer onto the support layer in said gaseous atmosphere. The invention is also directed to the anode produced by the process.
PCT/US2007/080286 2006-10-03 2007-10-03 Improved process for producing a rotary anode and the anode produced by such process WO2008060775A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/542,268 2006-10-03
US11/542,268 US20080081122A1 (en) 2006-10-03 2006-10-03 Process for producing a rotary anode and the anode produced by such process

Publications (2)

Publication Number Publication Date
WO2008060775A2 WO2008060775A2 (en) 2008-05-22
WO2008060775A3 true WO2008060775A3 (en) 2008-08-28

Family

ID=39283721

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/080286 WO2008060775A2 (en) 2006-10-03 2007-10-03 Improved process for producing a rotary anode and the anode produced by such process

Country Status (2)

Country Link
US (1) US20080081122A1 (en)
WO (1) WO2008060775A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0116385A1 (en) * 1983-01-25 1984-08-22 Koninklijke Philips Electronics N.V. Method of manufacturing a rotary anode for X-ray tubes and anode thus produced
EP0488450A1 (en) * 1990-11-30 1992-06-03 PLANSEE Aktiengesellschaft X-Ray tube anode with oxide layer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT336143B (en) * 1975-03-19 1977-04-25 Plansee Metallwerk X-ray anode
US4390368A (en) * 1981-04-01 1983-06-28 Gte Products Corporation Flame spray powder
NL8101697A (en) * 1981-04-07 1982-11-01 Philips Nv METHOD OF MANUFACTURING AN ANODE AND ANODE SO OBTAINED
NL8402828A (en) * 1984-09-14 1986-04-01 Philips Nv METHOD FOR MANUFACTURING A ROTARY TURNAROUND AND ROTARY TURNAROOD MANUFACTURED BY THE METHOD
AT1984U1 (en) * 1997-04-22 1998-02-25 Plansee Ag METHOD FOR PRODUCING AN ANODE FOR X-RAY TUBES
US6289080B1 (en) * 1999-11-22 2001-09-11 General Electric Company X-ray target

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0116385A1 (en) * 1983-01-25 1984-08-22 Koninklijke Philips Electronics N.V. Method of manufacturing a rotary anode for X-ray tubes and anode thus produced
EP0488450A1 (en) * 1990-11-30 1992-06-03 PLANSEE Aktiengesellschaft X-Ray tube anode with oxide layer

Also Published As

Publication number Publication date
US20080081122A1 (en) 2008-04-03
WO2008060775A2 (en) 2008-05-22

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