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47 条记录 (耗时 0.013 秒)

    Preservation of strain in iron nitride magnet
    1.
    发明授权
    Preservation of strain in iron nitride magnet 有权

    公开(公告)号：US11217370B2

    公开(公告)日：2022-01-04

    申请号：US15546387

    申请日：2016-01-22

    申请人： REGENTS OF THE UNIVERSITY OF MINNESOTA

    发明人： Jian-Ping Wang ,  YanFeng Jiang

    IPC分类号： H01F1/047 ,  H01F1/00 ,  H01F41/02 ,  C22C38/00 ,  C23C8/60 ,  C23C8/02 ,  C23C8/80 ,  C23C8/24 ,  C23C8/18 ,  C23C8/26

    摘要： A permanent magnet may include a Fe16N2 phase in a strained state. In some examples, strain may be preserved within the permanent magnet by a technique that includes etching an iron nitride-containing workpiece including Fe16N2 to introduce texture, straining the workpiece, and annealing the workpiece. In some examples, strain may be preserved within the permanent magnet by a technique that includes applying at a first temperature a layer of material to an iron nitride-containing workpiece including Fe16N2, and bringing the layer of material and the iron nitride-containing workpiece to a second temperature, where the material has a different coefficient of thermal expansion than the iron nitride-containing workpiece. A permanent magnet including an Fe16N2 phase with preserved strain also is disclosed.

    Preservation of strain in iron nitride magnet
    6.
    发明授权
    Preservation of strain in iron nitride magnet 有权

    公开(公告)号：US11581113B2

    公开(公告)日：2023-02-14

    申请号：US17543863

    申请日：2021-12-07

    申请人： REGENTS OF THE UNIVERSITY OF MINNESOTA

    发明人： Jian-Ping Wang ,  YanFeng Jiang

    IPC分类号： C23C8/60 ,  H01F1/047 ,  H01F1/00 ,  H01F41/02 ,  C22C38/00 ,  C23C8/02 ,  C23C8/80 ,  C23C8/24 ,  C23C8/18 ,  C23C8/26

    摘要： A permanent magnet may include a Fe16N2 phase in a strained state. In some examples, strain may be preserved within the permanent magnet by a technique that includes etching an iron nitride-containing workpiece including Fe16N2 to introduce texture, straining the workpiece, and annealing the workpiece. In some examples, strain may be preserved within the permanent magnet by a technique that includes applying at a first temperature a layer of material to an iron nitride-containing workpiece including Fe16N2, and bringing the layer of material and the iron nitride-containing workpiece to a second temperature, where the material has a different coefficient of thermal expansion than the iron nitride-containing workpiece. A permanent magnet including an Fe16N2 phase with preserved strain also is disclosed.

    Case hardened stainless steel oilfield tool
    9.
    发明申请
    Case hardened stainless steel oilfield tool 审中-公开
    表壳硬化不锈钢油田工具

    公开(公告)号：US20050269074A1

    公开(公告)日：2005-12-08

    申请号：US10860358

    申请日：2004-06-02

    申请人： Gregory Chitwood

    发明人： Gregory Chitwood

    IPC分类号： C21D1/06 ,  C21D1/78 ,  C21D6/00 ,  C21D6/04 ,  C22C38/18 ,  C22C38/44 ,  C23C8/22 ,  C23C8/32 ,  C23C8/34 ,  C23C8/60 ,  E21B23/04

    CPC分类号： C21D6/04 ,  C21D1/06 ,  C21D1/78 ,  C21D6/002 ,  C22C38/18 ,  C22C38/44 ,  C23C8/22 ,  C23C8/60

    摘要： An oilfield tool comprising a body of high chromium, low carbon steel and a high hardness surface having a supersaturated level of carbon. The body may be manufactured from a Super 13Cr type stainless steel. The tool may be carburized to a supersaturated level providing a surface hardness of about 55 HRC to 62 HRC and have an effective case depth of at least 0.020 inch at which depth the hardness is 50 HRC. The tool body is heat treated to a body hardness of about 39 HRC. A surface of the tool may be surface coated, e.g. nitrided or borided. The tool may be an expansion cone and may be a variable diameter expansion cone.

    摘要翻译： 一种油田工具，其包括高铬，低碳钢的主体和具有过饱和水平的碳的高硬度表面。 主体可以由超级13Cr型不锈钢制成。 该工具可以渗碳至过饱和水平，提供约55HRC至62HRC的表面硬度，并且在硬度为50HRC的深度下具有至少0.020英寸的有效壳体深度。 工具主体被热处理至约39 HRC的身体硬度。 工具的表面可以是表面涂覆的，例如， 氮化或硼化 该工具可以是膨胀锥体，并且可以是可变直径膨胀锥体。

    Method for generating hard, wear-proof surface layers on a metallic material
    10.
    发明授权
    Method for generating hard, wear-proof surface layers on a metallic material 失效
    在金属材料上产生硬质耐磨表面层的方法

    公开(公告)号：US4537793A

    公开(公告)日：1985-08-27

    申请号：US501287

    申请日：1983-06-06

    申请人： Hans-Peter Kehrer ,  Juergen Villain ,  Werner Reiff

    发明人： Hans-Peter Kehrer ,  Juergen Villain ,  Werner Reiff

    IPC分类号： C23C8/36 ,  C23C8/60 ,  C23C10/28 ,  C23C12/02 ,  C23C3/04

    CPC分类号： C23C12/02 ,  C23C10/28 ,  C23C8/60

    摘要： Hard, wear-proof surfaces are produced on a metallic material, such as a ferrous material, by applying a decomposable compound containing an element capable of hardening metallic materials, in the form of a powder, a paste-like admixture or a liquid, onto surfaces to be hardened, and applying an energy surge, obtained from, for example, a laser beam or an electron beam, to the surfaces containing such coating so as to decompose the coating and release the element which diffuses into the surface to be hardened. With this process, the base material is not subjected to any meaningful thermal loads and is not altered in term of its mechanical and physical properties.

    摘要翻译： 通过将含有能够硬化金属材料的元素的粉碎剂，糊状混合物或液体的可分解化合物施加到诸如铁基材料的金属材料上，制成硬的耐磨表面， 要被硬化的表面，以及将例如从激光束或电子束获得的能量浪涌施加到包含这种涂层的表面上，以便分解涂层并释放扩散到待硬化表面中的元素。 通过该方法，基材不受任何有意义的热负荷，并且在其机械和物理性能方面不改变。