公开(公告)号：US20180183279A1

公开(公告)日：2018-06-28

申请号：US15895743

申请日：2018-02-13

Applicant: General Electric Company

Inventor： Lawrence Bernard Kool ,  Min Zou ,  Wanming Zhang ,  Susan Corah ,  Christopher Klapper ,  Francis Johnson ,  Steve Buresh

IPC: H02K1/04 ,  H02K1/02 ,  H02K15/12 ,  H02K15/02 ,  H01F1/34

CPC classification number: H02K1/04 ,  B32B15/01 ,  C22C38/001 ,  C22C38/06 ,  C22C38/30 ,  C22C38/38 ,  C22C38/54 ,  C22C38/58 ,  H01F1/344 ,  H01F3/02 ,  H01F41/0233 ,  H01F2003/106 ,  H02K1/02 ,  H02K15/02 ,  H02K15/12

Abstract: A method includes forming one or more oxide barrier layers on one or more protected portions of a magnetic, metallic body, and converting one or more unprotected portions of the magnetic, metallic body to a less magnetic material by exposing the magnetic metallic body having the one or more oxide barrier layers formed thereon to nitrogen. One or more protected portions of the magnetic, metallic body that are beneath the one or more oxide barrier layers are not converted to the less magnetic material. The method can be used to form one or more layers of a laminated electric motor.

公开(公告)号：US10673288B2

公开(公告)日：2020-06-02

申请号：US15895743

申请日：2018-02-13

Applicant: General Electric Company

Inventor： Lawrence Bernard Kool ,  Min Zou ,  Wanming Zhang ,  Susan Corah ,  Christopher Klapper ,  Francis Johnson ,  Steve Buresh

IPC: H02K1/02 ,  H02K1/04 ,  H02K15/02 ,  H02K15/12 ,  H01F1/34 ,  H01F3/02 ,  H01F41/02 ,  C22C38/00 ,  C22C38/54 ,  C22C38/06 ,  B32B15/01 ,  C22C38/30 ,  C22C38/58 ,  C22C38/38 ,  H01F3/10

Abstract: A method includes forming one or more oxide barrier layers on one or more protected portions of a magnetic, metallic body, and converting one or more unprotected portions of the magnetic, metallic body to a less magnetic material by exposing the magnetic metallic body having the one or more oxide barrier layers formed thereon to nitrogen. One or more protected portions of the magnetic, metallic body that are beneath the one or more oxide barrier layers are not converted to the less magnetic material. The method can be used to form one or more layers of a laminated electric motor.

公开(公告)号：US20140157793A1

公开(公告)日：2014-06-12

申请号：US13707756

申请日：2012-12-07

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Francis Johnson ,  Min Zou ,  Ming Yin ,  Raghavendra Rao Adharapurapu ,  Christopher Klapper ,  Vijay Kumar Srivastava

IPC: C09K5/00 ,  F25B21/00

CPC classification number: C09K5/00 ,  C22C45/006 ,  C22C45/04 ,  C22F1/16 ,  F25B21/00 ,  F25D11/00 ,  H01F1/015 ,  Y02B30/66

Abstract: A novel magneto caloric material (MCM) is provided that can be used in, for example, a regenerator of a heat pump, appliance, air conditioning system, and other heating and/or cooling devices. The MCM is a type of Heusler alloy, has an L21 crystal structural prototype, and can undergo a reversible phase transformation between a low temperature, low magnetization Martensite phase and a high temperature, high magnetization Austenite phase to exhibit an inverse magneto caloric effect upon application of a sufficient magnetic field. A process of annealing of the alloy is also provided that can be used to adjust the temperature at which this phase transformation occurs. The present invention includes the alloy as subjected to such annealing.

Abstract translation: 提供了可用于例如热泵，电器，空调系统以及其它加热和/或冷却装置的再生器的新颖的磁热量材料（MCM）。 MCM是一种Heusler合金，具有L21晶体结构原型，并且可以在低温，低磁化马氏体相和高温高磁化奥氏体相之间进行可逆相变，以在应用时呈现逆磁热量效应 的足够的磁场。 还提供了可用于调节发生该相变的温度的合金退火过程。 本发明包括进行这种退火的合金。