公开(公告)号：WO1997000506A1

公开(公告)日：1997-01-03

申请号：PCT/US1996008676

申请日：1996-06-04

Applicant: ALLIEDSIGNAL INC.

Inventor： ALLIEDSIGNAL INC. ,  COLLINS, Aliki ,  MARTIS, Ronald ,  AMBASZ, Victor

IPC: G08B13/24

CPC classification number: G08B13/2408 ,  G08B13/2442 ,  H01F1/0304 ,  H01F1/15316

Abstract: A magnetic theft detection system includes a glassy metal alloy strip having a value of magnetostriction near zero. The strip has been annealed to produce a step change in the magnetization versus applied field behavior (B-H loop) thereof, and has a composition consisting essentially of the formula: (Co Fe)100-x (Si B)x where 20

Abstract translation: 磁性盗窃检测系统包括具有接近零的磁致伸缩值的玻璃状金属合金带。 该带已经退火以产生磁化强度相对于其施加的磁场行为（BH环）的阶梯变化，并且具有基本上由以下结构组成的组成：（Co Fe）100-x（Si B）x，其中20 < 在氧化气氛中退火金属合金带导致表面氧化物的形成，然后是形成一个表面氧化物 特征晶体Co层，厚度在1〜2μm的范围内。 结晶Co层的厚度确定阈值磁场的值，并由退火条件和铸态表面化学和结构控制。

公开(公告)号：WO1997025727A1

公开(公告)日：1997-07-17

申请号：PCT/US1997000178

申请日：1997-01-08

Applicant: ALLIEDSIGNAL INC.

Inventor： ALLIEDSIGNAL INC. ,  COLLINS, Aliki ,  SILGAILIS, John ,  ABOU-ELIAS, Joseph ,  MARTIS, Ronald, J. ,  HASEGAWA, Ryusuke

IPC: H01F17/06

CPC classification number: H01F27/24 ,  H01F1/15308 ,  H01F17/06 ,  H01F27/25

Abstract: An electrical choke has a magnetic core with a distributed gap. The magnetic core is composed of an iron based, rapidly solidified metallic alloy. The distributed gap configuration is produced by an annealing treatment which causes partial crystallization of the amorphous alloy. As a result of the annealing treatment, the magnetic core exhibits permeability in the range of 100 to 400, low core loss (i.e. less than 70 W/Kg at 100 kHz and 0.1T) and excellent DC bias behavior (at least 40% of the initial permeability is maintained at a DC bias field of 3980 A/m or 50 Oe).

Abstract translation: 电扼流圈具有分布间隙的磁芯。 磁芯由铁基快速凝固的金属合金构成。 通过退火处理产生分布间隙构造，其导致非晶合金的部分结晶。 作为退火处理的结果，磁芯显示出在100至400范围内的磁导率，低磁芯损耗（即在100kHz和0.1T下小于70W / Kg）和优异的DC偏置特性（至少40％ 初始磁导率保持在3980A / m或50Oe的DC偏置场）。

公开(公告)号：EP0968504A1

公开(公告)日：2000-01-05

申请号：EP98910491.4

申请日：1998-03-18

Applicant: AlliedSignal Inc.

Inventor： COLLINS, Aliki ,  SILGAILIS, John ,  FARLEY, Peter ,  HASEGAWA, Ryusuke

IPC: H01F3/14 ,  H01F27/34 ,  H01F27/25 ,  H01F41/02

CPC classification number: H01F27/25 ,  H01F3/14 ,  H01F27/34 ,  H01F41/0226

Abstract: An electrical choke comprises a magnetic amorphous metal core having, in combination, a distributed gap and a discrete gap. The amorphous metal is an iron based, rapidly solidified alloy. The distributed gap configuration is achieved by subjecting the magnetic core to a heat treatment, causing partial crystallization of the amorphous alloy. Such partial volume crystallization reduces the permeability of the magnetic core from several thousands to a value ranging from 200 to 800. The discrete gap is introduced by cutting the core and inserting a spacer. Depending on the width of the gap and the value of the annealed permeability, effective permeabilities in the range of 200 to 40 can be achieved. Advantageously, the reduced permeability magnetic core maintains its initial permeability under DC bias field excitation and exhibits low core loss, making it especially suited for use in power factor correction applications.

公开(公告)号：EP0832476B1

公开(公告)日：1999-11-24

申请号：EP96919057.8

申请日：1996-06-04

Applicant: AlliedSignal Inc.

Inventor： COLLINS, Aliki ,  MARTIS, Ronald ,  AMBASZ, Victor

IPC: G08B13/24 ,  H01F1/153

CPC classification number: G08B13/2408 ,  G08B13/2442 ,  H01F1/0304 ,  H01F1/15316

Abstract: A magnetic theft detection system includes a glassy metal alloy strip having a value of magnetostriction near zero. The strip has been annealed to produce a step change in the magnetization versus applied field behavior (B-H loop) thereof, and has a composition consisting essentially of the formula: (Co Fe)100-x (Si B)x where 20 « x « 23 and 15.4 « Co/Fe « 15.9 and 7.5 « B/Si « 9. Annealing of the metal alloy strip in an oxidizing atmosphere causes the formation of a surface oxide followed by a distinctive crystalline Co-layer with thickness in the range of 1 to 2 νm. The thickness of the crystalline Co-layer determines the value of the threshold magnetic field and is controlled by the annealing condition and the as cast surface chemistry and structure.

公开(公告)号：EP0873567A1

公开(公告)日：1998-10-28

申请号：EP97901927.0

申请日：1997-01-08

Applicant: AlliedSignal Inc.

Inventor： COLLINS, Aliki ,  SILGAILIS, John ,  ABOU-ELIAS, Joseph ,  MARTIS, Ronald, J. ,  HASEGAWA, Ryusuke

IPC: H01F1 ,  H01F17 ,  H01F27

CPC classification number: H01F27/24 ,  H01F1/15308 ,  H01F17/06 ,  H01F27/25

Abstract: An electrical choke has a magnetic core with a distributed gap. The magnetic core is composed of an iron based, rapidly solidified metallic alloy. The distributed gap configuration is produced by an annealing treatment which causes partial crystallization of the amorphous alloy. As a result of the annealing treatment, the magnetic core exhibits permeability in the range of 100 to 400, low core loss (i.e. less than 70 W/Kg at 100 kHz and 0.1T) and excellent DC bias behavior (at least 40% of the initial permeability is maintained at a DC bias field of 3980 A/m or 50 Oe).

公开(公告)号：EP0832476A1

公开(公告)日：1998-04-01

申请号：EP96919057.0

申请日：1996-06-04

Applicant: AlliedSignal Inc.

Inventor： COLLINS, Aliki ,  MARTIS, Ronald ,  AMBASZ, Victor

IPC: G08B13 ,  H01F1

CPC classification number: G08B13/2408 ,  G08B13/2442 ,  H01F1/0304 ,  H01F1/15316

Abstract: A magnetic theft detection system includes a glassy metal alloy strip having a value of magnetostriction near zero. The strip has been annealed to produce a step change in the magnetization versus applied field behavior (B-H loop) thereof, and has a composition consisting essentially of the formula: (Co Fe)100-x (Si B)x where 20 « x « 23 and 15.4 « Co/Fe « 15.9 and 7.5 « B/Si « 9. Annealing of the metal alloy strip in an oxidizing atmosphere causes the formation of a surface oxide followed by a distinctive crystalline Co-layer with thickness in the range of 1 to 2 νm. The thickness of the crystalline Co-layer determines the value of the threshold magnetic field and is controlled by the annealing condition and the as cast surface chemistry and structure.