NO984945L - Process of alloying precious metal bypass layers - Google Patents
Process of alloying precious metal bypass layersInfo
- Publication number
- NO984945L NO984945L NO984945A NO984945A NO984945L NO 984945 L NO984945 L NO 984945L NO 984945 A NO984945 A NO 984945A NO 984945 A NO984945 A NO 984945A NO 984945 L NO984945 L NO 984945L
- Authority
- NO
- Norway
- Prior art keywords
- precious metal
- high temperature
- superconductor
- layer
- bypass layer
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/30—Devices switchable between superconducting and normal states
Abstract
Keramiske høytemperatursupraledere (1) som brukes som strømbegrensere i vekselstrømledninger, bør oppvise et bypass-sjikt (2) hvis spesifikke elektriske motstand er over 10 ganger høyere enn motstanden av et edelmetall. For å oppnå dette legeres edelmetall-bypass-sjiktet (2) av høytemperatursupralederen (1), fortrinnsvis av sølv, med et ikke-edelmetall, fortrinnsvis Pb eller Bi eller Ga eller Al, ved en varmebehandling. For påføring av et legeringsmetallsjikt (3) på edelmetall-bypass-sjiktet (2) av høytemperatursupralederen (1) før varmebehand- lingen angis flere fremgangsmåter. Supraleder-sjikttyk- kelsen (dl) av høytemperatursupralederen (1) justeres til < 500 nm. Forholdet mellom bypass-sjikttykkelsen (d2) av edelmetall-bypass-sjiktet (2) og supraleder- sjikttykkelsen (dl) justeres til < 1/5.Ceramic high temperature superconductors (1) used as current limiter in AC power lines should exhibit a bypass layer (2) whose specific electrical resistance is over 10 times higher than the resistance of a precious metal. To achieve this, the precious metal bypass layer (2) of the high temperature superconductor (1), preferably of silver, is alloyed with a non-precious metal, preferably Pb or Bi or Ga or Al, by a heat treatment. For applying an alloy metal layer (3) to the precious metal bypass layer (2) of the high temperature superconductor (1) before the heat treatment, several methods are specified. The superconductor layer thickness (dl) of the high temperature superconductor (1) is adjusted to <500 nm. The ratio of the bypass layer thickness (d2) of the precious metal bypass layer (2) to the superconductor layer thickness (dl) is adjusted to <1/5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19746975A DE19746975C1 (en) | 1997-10-24 | 1997-10-24 | Alloying of a precious metal by-pass layer of a high temperature superconductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO984945D0 NO984945D0 (en) | 1998-10-23 |
| NO984945L true NO984945L (en) | 1999-04-26 |
Family
ID=7846473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO984945A NO984945L (en) | 1997-10-24 | 1998-10-23 | Process of alloying precious metal bypass layers |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0911890A3 (en) |
| JP (1) | JPH11219627A (en) |
| CA (1) | CA2249790A1 (en) |
| DE (1) | DE19746975C1 (en) |
| NO (1) | NO984945L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6762673B1 (en) * | 1998-02-10 | 2004-07-13 | American Superconductor Corp. | Current limiting composite material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941081A (en) * | 1985-06-03 | 1990-07-10 | Microfast Controls Corp. | Interrupt zone in rung of ladder program in programmable controller |
| US5079223A (en) * | 1988-12-19 | 1992-01-07 | Arch Development Corporation | Method of bonding metals to ceramics |
| US5296456A (en) * | 1989-08-09 | 1994-03-22 | Furukawa Electric Co., Ltd. | Ceramic superconductor wire and method of manufacturing the same |
| CH682358A5 (en) * | 1991-02-22 | 1993-08-31 | Asea Brown Boveri | Ceramic high temp. superconductor prodn. - by pouring starting material into mould, heating, cooling, thermally treating in oxygen@ and cooling, for shield magnetic fields in switching elements |
| JPH05251761A (en) * | 1992-03-04 | 1993-09-28 | Mitsubishi Electric Corp | Current limiting conductor using oxide superconductive film |
| JP3185467B2 (en) * | 1993-04-28 | 2001-07-09 | 日立電線株式会社 | Oxide superconducting conductor |
| JPH0883932A (en) * | 1994-09-09 | 1996-03-26 | Sumitomo Electric Ind Ltd | Current limiting element |
-
1997
- 1997-10-24 DE DE19746975A patent/DE19746975C1/en not_active Expired - Fee Related
-
1998
- 1998-10-01 EP EP98810989A patent/EP0911890A3/en not_active Withdrawn
- 1998-10-06 CA CA002249790A patent/CA2249790A1/en not_active Abandoned
- 1998-10-23 NO NO984945A patent/NO984945L/en not_active Application Discontinuation
- 1998-10-26 JP JP10304207A patent/JPH11219627A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NO984945D0 (en) | 1998-10-23 |
| DE19746975C1 (en) | 1999-03-11 |
| EP0911890A3 (en) | 1999-05-12 |
| EP0911890A2 (en) | 1999-04-28 |
| JPH11219627A (en) | 1999-08-10 |
| CA2249790A1 (en) | 1999-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FC2A | Withdrawal, rejection or dismissal of laid open patent application |