GB1314884A - Manufacturing target electrodes for x-ray tubes - Google Patents
Manufacturing target electrodes for x-ray tubesInfo
- Publication number
- GB1314884A GB1314884A GB1314884DA GB1314884A GB 1314884 A GB1314884 A GB 1314884A GB 1314884D A GB1314884D A GB 1314884DA GB 1314884 A GB1314884 A GB 1314884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- rhenium
- electro
- mixture
- deposited
- 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
Links
Classifications
-
- 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
Landscapes
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
1314884 Electro-depositing W or W-Re MULLARD Ltd 28 May 1970 25789/70 Heading C7B In manufacturing a rotary target electrode for an X-ray tube, a metal layer of tungsten or tungsten-rhenium is electro-deposited on an electrically conductive substrate disc from a bath of fused salts comprising a mixture of:- (a) an alkali metal tungstate or a mixture of an alkali metal tungstate and an alkali metal acidic rhenium salt, (b) an alkali metal borate or phosphate, and (c) tungstic oxide or a mixture of tungstic and rhenium oxides. Specified conditions are:- a substrate of W, Mo, W-Mo, an alloy based on W or Mo or pre-plated carbon; a W anode; a bath at 850-1000‹C. comprising (a) Na Li Wo 4 and optionally sodium lithium perrhenate, (b)Na Li B 2 O 4 or sodium lithium phosphate and (c) WO 3 and optionally rhenium oxide; a N 2 atmosphere; and electro-deposition using a current density exceeding 0À01A/cm<SP>2</SP>, e.g. using periodic reverse plating with identical forward and reverse currents of 5 A/cm<SP>2</SP> for 10 secs and 1 sec respectively, to produce a deposited layer at least 100 microns thick. Deposited layers may be smoothed by grinding. Specification 777591 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2578970 | 1970-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1314884A true GB1314884A (en) | 1973-04-26 |
Family
ID=10233337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1314884D Expired GB1314884A (en) | 1970-05-28 | 1970-05-28 | Manufacturing target electrodes for x-ray tubes |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE767710A (en) |
DE (1) | DE2122950A1 (en) |
FR (1) | FR2093868A5 (en) |
GB (1) | GB1314884A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661692A1 (en) * | 1990-05-04 | 1991-11-08 | Gen Electric Cgr | Rhenium deposition process |
US11081325B2 (en) | 2013-09-05 | 2021-08-03 | Plansee Se | Conductive target material |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535344A1 (en) * | 1982-10-29 | 1984-05-04 | Thomson Csf | METHOD FOR SELECTIVE DEPOSITION OF A REFRACTORY METAL LAYER ON A GRAPHITE PIECE |
-
1970
- 1970-05-28 GB GB1314884D patent/GB1314884A/en not_active Expired
-
1971
- 1971-05-10 DE DE19712122950 patent/DE2122950A1/en active Pending
- 1971-05-26 BE BE767710A patent/BE767710A/en unknown
- 1971-05-28 FR FR7119525A patent/FR2093868A5/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661692A1 (en) * | 1990-05-04 | 1991-11-08 | Gen Electric Cgr | Rhenium deposition process |
US11081325B2 (en) | 2013-09-05 | 2021-08-03 | Plansee Se | Conductive target material |
Also Published As
Publication number | Publication date |
---|---|
FR2093868A5 (en) | 1972-01-28 |
DE2122950A1 (en) | 1971-12-09 |
BE767710A (en) | 1971-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |