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1.发明专利
公开(公告)号：JPH10136561A
公开(公告)日：1998-05-22
申请号：JP22935897
申请日：1997-08-26
Applicant: ABB RESEARCH LTD
Inventor： CHEN MAKAN , HOIDIS MARKUS , PAUL WILLI DR
Abstract: PROBLEM TO BE SOLVED: To provide a current limiter which has a high-temperature conductor simply and at a low price. SOLUTION: To manufacture a composite conductor 1 and 3, a silver foil 1 is put on a powder layer consisting of 2mm thick MgO on one side, and it is covered with a 600μm thick green sheet containing a high-temperature superconductor powder and an organic coupling agent on the other side. After fusion of the high-temperature superconductor, a 200μm thick glass or carbon fiber/epoxy resin layer is applied by vacuum impregnation to at least one side of the composite conductor 1 and 3 for its mechanical stabilization. To manufacture a resistant current limiter, a plate-shaped current limiting element having specified layer structure is cut in meander shape and besides two layers are bonded or pressed after interposition of cooling member as occasion demands. An inductive current limiter can be obtained by bending such a flexible plate, and besides, brazing a ring gap 9 with a metallic strip 5 consisting of silver.
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公开(公告)号：CA2213115C
公开(公告)日：2005-05-03
申请号：CA2213115
申请日：1997-08-15
Applicant: ABB RESEARCH LTD
Inventor： CHEN MAKAN , HOIDIS MARKUS , PAUL WILLI
Abstract: On transition from the superconducting state to the normal conducting state, current limiters having a high-temperature superconductor (3) increase their electrical resistance and thereby limit an electric current which is flowing through them. To provide electrical stabilization, the high-temperature superconductor (3) is combined with a silver foil (1) having a layer thickness of
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公开(公告)号：BR9704495A
公开(公告)日：1999-01-19
申请号：BR9704495
申请日：1997-08-25
Applicant: ABB RESEARCH LTD
Inventor： PAUL WILLI , CHEN MAKAN , HOIDIS MARKUS
Abstract: In a current limiter production process involving application of a high temperature superconductor (HTSC) starting material powder onto a silver layer (1) surface and then temperature and oxygen treatment to form the HTSC (3), the novelty is that (a), prior to applying the HTSC starting material powder, the opposite surface of the silver layer is placed on a powder layer which is chemically inert wrt. the hot HTSC; and (b) a mechanical stabilisation layer (4) is applied onto at least one main surface of the composite conductor (1, 3), after forming the HTSC (3). Also claimed is a current limiter having a composite conductor (1, 3) comprising a HTSC (3) in surface contact with a non-superconductive shunt resistor of a silver layer (1) parallel to the HTSC, the novelty being that (i) the HTSC (3) has a layer thickness (d3) of less than 500 (preferably less than 300) microns, the silver layer (1) has a layer thickness (d1) of less than 25 (preferably less than 10) microns and d1/d3 = less than 1/5, preferably less than 1/10; and (ii) at least one main face of the composite conductor (1, 3) is in surface contact with a mechanical stabilisation layer (4).
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公开(公告)号：DE19634424C2
公开(公告)日：1998-07-02
申请号：DE19634424
申请日：1996-08-26
Applicant: ABB RESEARCH LTD
Inventor： CHEN MAKAN , HOIDIS MARKUS , PAUL WILLI DR
Abstract: In a current limiter production process involving application of a high temperature superconductor (HTSC) starting material powder onto a silver layer (1) surface and then temperature and oxygen treatment to form the HTSC (3), the novelty is that (a), prior to applying the HTSC starting material powder, the opposite surface of the silver layer is placed on a powder layer which is chemically inert wrt. the hot HTSC; and (b) a mechanical stabilisation layer (4) is applied onto at least one main surface of the composite conductor (1, 3), after forming the HTSC (3). Also claimed is a current limiter having a composite conductor (1, 3) comprising a HTSC (3) in surface contact with a non-superconductive shunt resistor of a silver layer (1) parallel to the HTSC, the novelty being that (i) the HTSC (3) has a layer thickness (d3) of less than 500 (preferably less than 300) microns, the silver layer (1) has a layer thickness (d1) of less than 25 (preferably less than 10) microns and d1/d3 = less than 1/5, preferably less than 1/10; and (ii) at least one main face of the composite conductor (1, 3) is in surface contact with a mechanical stabilisation layer (4).
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Patent Agency Ranking
公开(公告)号：CA2213115A1
公开(公告)日：1998-02-26
申请号：CA2213115
申请日：1997-08-15
Applicant: ABB RESEARCH LTD
Inventor： HOIDIS MARKUS , PAUL WILLI , CHEN MAKAN
Abstract: On transition from the superconducting state to the normal conducting state, current limiters having a high-temperature superconductor (3) increase their electrical resistance and thereby limit an electric current which is flowing through them. To provide electrical stabilization, the high-temperature super-conductor (3) is combined with a silver foil (l) having a layer thickness of
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公开(公告)号：DE19634424A1
公开(公告)日：1998-03-05
申请号：DE19634424
申请日：1996-08-26
Applicant: ABB RESEARCH LTD
Inventor： CHEN MAKAN , HOIDIS MARKUS , PAUL WILLI DR
Abstract: In a current limiter production process involving application of a high temperature superconductor (HTSC) starting material powder onto a silver layer (1) surface and then temperature and oxygen treatment to form the HTSC (3), the novelty is that (a), prior to applying the HTSC starting material powder, the opposite surface of the silver layer is placed on a powder layer which is chemically inert wrt. the hot HTSC; and (b) a mechanical stabilisation layer (4) is applied onto at least one main surface of the composite conductor (1, 3), after forming the HTSC (3). Also claimed is a current limiter having a composite conductor (1, 3) comprising a HTSC (3) in surface contact with a non-superconductive shunt resistor of a silver layer (1) parallel to the HTSC, the novelty being that (i) the HTSC (3) has a layer thickness (d3) of less than 500 (preferably less than 300) microns, the silver layer (1) has a layer thickness (d1) of less than 25 (preferably less than 10) microns and d1/d3 = less than 1/5, preferably less than 1/10; and (ii) at least one main face of the composite conductor (1, 3) is in surface contact with a mechanical stabilisation layer (4).
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公开(公告)号：DE4302267A1
公开(公告)日：1994-08-04
申请号：DE4302267
申请日：1993-01-28
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , HOIDIS MARKUS , SCHUELER CLAUS DR
Abstract: Electroplating of a Ni or Ni-alloy metal substrate with Ag is effected to give a blister-free coating, the Ag-coated substrate undergoing annealing at 600-950 deg.C in an atmos. from which O2 is excluded.Also claimed is a smelting device of the prodn. of metal oxide-contg. melts, esp. in the mfr. of high temp. superconductors, comprising fo a Ni or Ni-alloy substrate with an Ag coating applied by the claimed process.Pref. Ag-coated metal substrate undergoes annealing at 800-900 deg.C in an inert gas atmos. or an atmos. from which O2 is excluded, at an O2-partial pressure of below 10 Pa, pref. belo1 1 pa and for a period of 0.1-10 hours, pref. 1-3 hours.
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公开(公告)号：AT518232T
公开(公告)日：2011-08-15
申请号：AT06804795
申请日：2006-10-06
Applicant: ABB RESEARCH LTD
Inventor： HOIDIS MARKUS , DONZEL LISE
Abstract: A method is disclosed for producing a non-linear powder having microvaristor particles which have a non-linear current-voltage characteristic. The production steps includes mixing non-metallic particles with the microvaristor particles, thermally treating the non-metallic particles for decomposing them into electrically conductive particles and fusing the electrically conductive particles onto the microvaristor particles. Embodiments, among other things, relate to: breaking up agglomerates of the non-metallic particles during mixing; keeping the decomposition temperature below a sintering or calcination temperature of the microvaristor particles; and choosing micron-sized or nano-sized non-conductive particles for microvaristor decoration. The production method produces varistor powder with improved reproducibility of the non-linear electric current-voltage characterstic and with reduced switching fields (Es).
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公开(公告)号：AU8166701A
公开(公告)日：2002-04-08
申请号：AU8166701
申请日：2001-09-13
Applicant: ABB RESEARCH LTD
Inventor： CHEN MAKAN , HOIDIS MARKUS
IPC: C04B35/45 , C04B35/653 , H01L39/24
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