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    R-T-B based permanent magnet
    2.
    发明授权
    R-T-B based permanent magnet 有权

    公开(公告)号：US10943717B2

    公开(公告)日：2021-03-09

    申请号：US15440755

    申请日：2017-02-23

    申请人： TDK CORPORATION

    发明人： Masashi Miwa ,  Takurou Iwasa

    IPC分类号： H01F1/057 ,  B22F9/04 ,  B22F3/16 ,  C22C33/02 ,  B22D11/00 ,  B22F5/00 ,  C21D3/06 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/058

    摘要： An R-T-B based permanent magnet includes main phase grains composed of R2T14B type compound. R is a rare earth element. T is iron group element(s) essentially including Fe or Fe and Co. B is boron. An average grain size of the main phase grains is 0.8 μm or more and 2.8 μm or less. The R-T-B based permanent magnet contains at least C and Zr in addition to R, T, and B. B is contained at 0.75 mass % or more and 0.88 mass % or less. Zr is contained at 0.65 mass % or more and 5.00 mass % or less. A formula (1) of 5.0≤[B]+[C]−[Zr]≤5.6 is satisfied, where [B] is a B content represented by atom %, [C] is a C content represented by atom %, and [Zr] is a Zr content represented by atom %.

    Methods for producing titanium and titanium alloy articles
    3.
    发明授权
    Methods for producing titanium and titanium alloy articles 有权

    公开(公告)号：US10407745B2

    公开(公告)日：2019-09-10

    申请号：US16001297

    申请日：2018-06-06

    申请人： ATI Properties LLC

    发明人： Richard L. Kennedy ,  Robert M. Davis ,  Rex W. Bradley ,  Robin M. Forbes Jones

    IPC分类号： C21D3/06 ,  B22D21/02 ,  C21D1/773 ,  C21D8/00 ,  C22C1/02 ,  C22C1/06 ,  C22C14/00 ,  C22F1/18

    摘要： A method of producing an article selected from a titanium article and a titanium alloy article comprises melting feed materials with a source of hydrogen to form a molten heat of titanium or a titanium alloy, and casting at least a portion of the molten heat to form a hydrogenated titanium or titanium alloy ingot. The hydrogenated ingot is deformed at an elevated temperature to form a worked article comprising a cross-sectional area smaller than a cross-sectional area of the hydrogenated ingot. The worked article is dehydrogenated to reduce a hydrogen content of the worked article. In certain non-limiting embodiments of the method, the dehydrogenated article comprises an average α-phase particle size of less than 10 microns in the longest dimension.

    R-T-B BASED PERMANENT MAGNET
    6.
    发明申请
    R-T-B BASED PERMANENT MAGNET 审中-公开

    公开(公告)号：US20170250013A1

    公开(公告)日：2017-08-31

    申请号：US15440443

    申请日：2017-02-23

    申请人： TDK CORPORATION

    发明人： Tamotsu ISHIYAMA ,  Masashi MIWA ,  Takashi WATANABE

    IPC分类号： H01F1/053 ,  C22C38/14 ,  C22C38/10 ,  C21D3/06 ,  C22C38/00 ,  B22F9/04 ,  B22F3/16 ,  B22F5/00 ,  C22C38/16 ,  C22C38/06

    摘要： An R-T-B based permanent magnet includes main phase grains composed of R2T14B type compound. R is a rare earth element. T is iron group element(s) essentially including Fe or Fe and Co. B is boron. An average grain size of the main phase grains is 0.8 μm to 2.8 μm. The R-T-B based permanent magnet contains at least C and Ga in addition to R, T, and B. B is contained at 0.71 mass % to 0.86 mass %. C is contained at 0.13 mass % to 0.34 mass %. Ga is contained at 0.40 mass % to 1.80 mass %. A formula (1) of 0.14≦[C]/([B]+[C])≦0.30 is satisfied, where [B] is a B content represented by atom %, and [C] is a C content represented by atom %.

    METHODS FOR PRODUCING TITANIUM AND TITANIUM ALLOY ARTICLES
    7.
    发明申请
    METHODS FOR PRODUCING TITANIUM AND TITANIUM ALLOY ARTICLES 有权
    生产钛和钛合金制品的方法

    公开(公告)号：US20160230239A1

    公开(公告)日：2016-08-11

    申请号：US15018337

    申请日：2016-02-08

    申请人： ATI Properties, Inc.

    发明人： Richard L. Kennedy ,  Robert M. Davis ,  Rex W. Bradley ,  Robin M. Forbes Jones

    IPC分类号： C21D3/06 ,  C21D1/773 ,  C22C14/00 ,  C22C1/02 ,  C22C1/06 ,  B22D21/02 ,  C21D8/00

    CPC分类号： C21D3/06 ,  B22D21/022 ,  C21D1/773 ,  C21D8/00 ,  C22C1/02 ,  C22C1/06 ,  C22C14/00 ,  C22F1/183

    摘要： A method of producing an article selected from a titanium article and a titanium alloy article comprises melting feed materials with a source of hydrogen to form a molten heat of titanium or a titanium alloy, and casting at least a portion of the molten heat to form a hydrogenated titanium or titanium alloy ingot. The hydrogenated ingot is deformed at an elevated temperature to form a worked article comprising a cross-sectional area smaller than a cross-sectional area of the hydrogenated ingot. The worked article is dehydrogenated to reduce a hydrogen content of the worked article. In certain non-limiting embodiments of the method, the dehydrogenated article comprises an average α-phase particle size of less than 10 microns in the longest dimension.

    摘要翻译： 制造选自钛制品和钛合金制品的制品的方法包括用氢源熔化原料以形成钛或钛合金的熔融热，并浇铸至少一部分熔融热，形成 氢化钛或钛合金锭。 氢化锭在升高的温度下变形以形成包括截面积小于氢化锭的横截面面积的加工制品。 将加工的物品脱氢以减少被加工物品的氢含量。 在该方法的某些非限制性实施方案中，脱氢制品包括在最长维度上小于10微米的平均α-相粒度。

    Carburizing treatment of a steel with reduction of the hydrogen content in the carburized layer
    8.
    发明授权
    Carburizing treatment of a steel with reduction of the hydrogen content in the carburized layer 失效
    加固处理钢，减少加氢层中的氢含量

    公开(公告)号：US5194096A

    公开(公告)日：1993-03-16

    申请号：US781146

    申请日：1991-12-24

    申请人： Torsten Holm

    发明人： Torsten Holm

    IPC分类号： C21D3/06 ,  C23C8/22

    CPC分类号： C23C8/22 ,  C21D3/06

    摘要： Steel is carburized at a temperature within the austenitic range and in an atmosphere which comprises nitrogen, hydrogen and carbon monoxide, by lowering the hydrogen concentration in the treatment atmosphere prior to cooling steel in oil, salt or water, so as to reduce the hydrogen concentration in the carburization layer of the steel, by outward diffusion of hydrogen from the carburization layer.

    摘要翻译： PCT No.PCT / SE90 / 00409 Sec。 371 1991年12月24日第 102（e）1991年12月24日PCT PCT 1990年6月13日PCT公布。 公开号WO91 / 00367 日期：1991年1月10日。钢在奥氏体范围内的温度和包含氮，氢和一氧化碳的气氛中通过在将油，盐或水冷却之前降低处理气氛中的氢浓度来渗碳， 从而通过从渗碳层向外扩散氢来降低钢的渗碳层中的氢浓度。