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公开(公告)号：US07806991B2
公开(公告)日：2010-10-05
申请号：US11641765
申请日：2006-12-20
申请人： Matahiro Komuro , Yuichi Satsu , Takao Imagawa , Katsumi Ishikawa , Takeyuki Itabashi , Yuzo Kozono
发明人： Matahiro Komuro , Yuichi Satsu , Takao Imagawa , Katsumi Ishikawa , Takeyuki Itabashi , Yuzo Kozono
CPC分类号： H01F1/0577 , H01F1/0572 , H01F1/0579 , H01F41/0293 , H02K1/02 , H02K1/246 , H02K1/276 , H02K1/2766 , H02K1/278
摘要： A lamellar high resistance layer having resistivity ten times or higher than that of a mother phase containing iron or cobalt is formed and an oxygen content is controlled to 10 to 10000 ppm so that the reliability and residual magnetic flux density are increased.
摘要翻译： 形成具有比含有铁或钴的母相的电阻率高十倍以上的层状高电阻层，将氧含量控制在10〜10000ppm，使得可靠性和剩余磁通密度增加。
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公开(公告)号：US20070151632A1
公开(公告)日：2007-07-05
申请号：US11641765
申请日：2006-12-20
申请人： Matahiro Komuro , Yuichi Satsu , Takao Imagawa , Katsumi Ishikawa , Takeyuki Itabashi , Yuzo Kozono
发明人： Matahiro Komuro , Yuichi Satsu , Takao Imagawa , Katsumi Ishikawa , Takeyuki Itabashi , Yuzo Kozono
IPC分类号： H01F1/20
CPC分类号： H01F1/0577 , H01F1/0572 , H01F1/0579 , H01F41/0293 , H02K1/02 , H02K1/246 , H02K1/276 , H02K1/2766 , H02K1/278
摘要： A lamellar high resistance layer having resistivity ten times or higher than that of a mother phase containing iron or cobalt is formed and an oxygen content is controlled to 10 to 10000 ppm so that the reliability and residual magnetic flux density are increased.
摘要翻译： 形成具有比含有铁或钴的母相的电阻率高十倍以上的层状高电阻层，将氧含量控制在10〜10000ppm，使得可靠性和剩余磁通密度增加。
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公开(公告)号：US20070159171A1
公开(公告)日：2007-07-12
申请号：US11641757
申请日：2006-12-20
IPC分类号： G01V3/00
CPC分类号： G01R33/383 , G01R33/3806 , G01R33/3873 , Y10T428/12014
摘要： Eddy current generated around a magnetic circuit in an MRI apparatus is one of the causes of deviation from an ideal magnetic field gradient waveform and causes image distortion, loss of strength, ghost generation, loss of signal, and spectral distortion. An object of the present invention is to suppress the generation of the eddy current. In an MRI apparatus, a ferromagnetic material formed from powder is used in a part of a magnetic circuit: the powder mainly comprising a mother phase containing iron or cobalt and showing ferromagnetism; and a high-resistance layer having a resistance not less than ten times as high as the mother phase and a Vickers hardness lower than that of the mother phase being formed in layers along parts of the surface of the powder on parts or the entire of the surface.
摘要翻译： 在MRI装置中围绕磁路产生的涡流是偏离理想磁场梯度波形的原因之一，并且导致图像失真，强度损失，重影产生，信号损失和光谱失真。 本发明的目的是抑制涡电流的产生。 在MRI装置中，在磁路的一部分中使用由粉末形成的铁磁材料，该粉末主要包含含有铁或钴的母相并显示出铁磁性; 以及耐电压不低于母相的十倍的高电阻层，维氏硬度低于母相的部分或全部沿着粉末表面的一部分形成的层， 表面。
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公开(公告)号：US07847555B2
公开(公告)日：2010-12-07
申请号：US12050438
申请日：2008-03-18
IPC分类号： G01V3/00
CPC分类号： G01R33/383 , G01R33/3806 , G01R33/3873 , Y10T428/12014
摘要： A magnet which includes ferromagnetic powder to be mainly a mother phase containing iron or cobalt. The ferromagnetic powder is provided with a high-resistance layer which has a resistance higher than or equal to ten times as high as a resistance of the mother phase and a Vickers hardness lower than a Vickers hardness of the mother phase. The high-resistance layer is being formed partially or entirely on the surface of the ferromagnetic powder.
摘要翻译： 一种磁铁，其包括主要是含有铁或钴的母相的铁磁性粉末。 铁磁粉末设置有高电阻层，其电阻高于或等于母相电阻的十倍，维氏硬度低于母相维氏硬度。 高电阻层部分地或完全地形成在铁磁性粉末的表面上。
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公开(公告)号：US07352184B2
公开(公告)日：2008-04-01
申请号：US11641757
申请日：2006-12-20
IPC分类号： G01V3/00
CPC分类号： G01R33/383 , G01R33/3806 , G01R33/3873 , Y10T428/12014
摘要： Eddy current generated around a magnetic circuit in an MRI apparatus is one of the causes of deviation from an ideal magnetic field gradient waveform and causes image distortion, loss of strength, ghost generation, loss of signal, and spectral distortion. An object of the present invention is to suppress the generation of the eddy current. In an MRI apparatus, a ferromagnetic material formed from powder is used in a part of a magnetic circuit: the powder mainly comprising a mother phase containing iron or cobalt and showing ferromagnetism; and a high-resistance layer having a resistance not less than ten times as high as the mother phase and a Vickers hardness lower than that of the mother phase being formed in layers along parts of the surface of the powder on parts or the entire of the surface.
摘要翻译： 在MRI装置中围绕磁路产生的涡流是偏离理想磁场梯度波形的原因之一，并且导致图像失真，强度损失，重影产生，信号损失和光谱失真。 本发明的目的是抑制涡电流的产生。 在MRI装置中，在磁路的一部分中使用由粉末形成的铁磁材料，该粉末主要包含含有铁或钴的母相并显示出铁磁性; 以及耐电压不低于母相的十倍的高电阻层，维氏硬度低于母相的部分或全部沿着粉末表面的一部分形成的层， 表面。
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公开(公告)号：US20080171216A1
公开(公告)日：2008-07-17
申请号：US12050438
申请日：2008-03-18
IPC分类号： H01F1/00
CPC分类号： G01R33/383 , G01R33/3806 , G01R33/3873 , Y10T428/12014
摘要： A magnet which includes ferromagnetic powder to be mainly a mother phase containing iron or cobalt. The ferromagnetic powder is provided with a high-resistance layer which has a resistance higher than or equal to ten times as high as a resistance of the mother phase and a Vickers hardness lower than a Vickers hardness of the mother phase. The high-resistance layer is being formed partially or entirely on the surface of the ferromagnetic powder.
摘要翻译： 一种磁铁，其包括主要是含有铁或钴的母相的铁磁性粉末。 铁磁粉末设置有高电阻层，其电阻高于或等于母相电阻的十倍，维氏硬度低于母相维氏硬度。 高电阻层部分地或完全地形成在铁磁性粉末的表面上。
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7.发明申请Magnet, magnet magnetic material, coating film forming treatment liquid, and rotating machine 审中-公开磁铁，磁铁磁性材料，涂膜成型处理液和旋转机公开(公告)号：US20070065677A1
公开(公告)日：2007-03-22
申请号：US11524289
申请日：2006-09-21
申请人： Yuichi Satsu , Matahiro Komuro , Noboru Baba , Yuzo Kozono , Kunihiro Maeda
发明人： Yuichi Satsu , Matahiro Komuro , Noboru Baba , Yuzo Kozono , Kunihiro Maeda
CPC分类号： C23C26/02 , C23C22/02 , H01F1/0552 , H01F1/0557 , H01F1/0572 , H01F1/0577 , H01F41/026 , H01F41/0293 , Y10T428/32
摘要： A magnet, wherein a surface of each of magnetic particles constituting the magnet is covered by a film with two or more types of fluoride are main components, wherein the main components of the film are fluoride including an element selected from the group consisting of Mg, La, Ce, Pr and Nd and fluoride including an element selected from the group consisting of Ca, Sr, Ba, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu.
摘要翻译： 一种磁体，其中构成磁体的每个磁性颗粒的表面被具有两种或更多种类型的氟化物的膜覆盖，其中主要成分是膜，其中主要成分是含有选自Mg， La，Ce，Pr和Nd以及包含选自Ca，Sr，Ba，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb或Lu中的元素的氟化物。
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公开(公告)号：US08119260B2
公开(公告)日：2012-02-21
申请号：US11189912
申请日：2005-07-27
申请人： Matahiro Komuro , Yuichi Satsu , Kunihiro Maeda , Yuzo Kozono
发明人： Matahiro Komuro , Yuichi Satsu , Kunihiro Maeda , Yuzo Kozono
IPC分类号： B32B15/04
CPC分类号： H02K1/02 , H01F1/0572 , H01F1/0577 , H01F41/0293 , Y10T428/32 , Y10T428/325
摘要： In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.
摘要翻译： 在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。
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公开(公告)号：US20120175986A1
公开(公告)日：2012-07-12
申请号：US13346756
申请日：2012-01-10
申请人： Matahiro Komuro , Yuichi Satsu , Kunihiro Maeda , Yuzo Kozono
发明人： Matahiro Komuro , Yuichi Satsu , Kunihiro Maeda , Yuzo Kozono
CPC分类号： H02K1/02 , H01F1/0572 , H01F1/0577 , H01F41/0293 , Y10T428/32 , Y10T428/325
摘要： In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.
摘要翻译： 在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。
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公开(公告)号：US20070071979A1
公开(公告)日：2007-03-29
申请号：US11525928
申请日：2006-09-25
申请人： Matahiro Komuro , Yuichi Satsu , Yuzo Kozono , Yasuo Kondo
发明人： Matahiro Komuro , Yuichi Satsu , Yuzo Kozono , Yasuo Kondo
CPC分类号： H01F1/0572 , B22F1/02 , C22C19/07 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C2202/02 , C23C30/00 , H01F1/0552 , H01F1/0557 , H01F1/0577 , H01F41/0293 , Y10T428/2991 , Y10T428/2993 , Y10T428/32 , Y10T428/325
摘要： A magnetic material is including magnetic particles including a rare earth element, wherein a fluorine compound including an alkaline earth element or a rare earth element is formed on a surface of the magnetic particles, an oxygen concentration of the fluorine compound is higher than an oxygen concentration of the magnetic particle and the fluorine compound includes at least one type of element selected from the group consisting of the Li, Mg, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, Al, Ga, Sr, Y, Zr, Nb, Ag, In, Sn, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Pb, and Bi elements.
摘要翻译： 磁性材料包括包含稀土元素的磁性颗粒，其中在磁性颗粒的表面上形成包含碱土金属或稀土元素的氟化合物，氟化合物的氧浓度高于氧浓度 所述磁性粒子和所述氟化合物包含选自Li，Mg，Ca，Sc，V，Cr，Mn，Fe，Co，Ni，Zn，Al，Ga，Sr中的至少一种元素， Y，Zr，Nb，Ag，In，Sn，Ba，La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb，Lu，Pb和Bi元素。
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