公开(公告)号：US08641833B2

公开(公告)日：2014-02-04

申请号：US13002571

申请日：2009-06-30

Applicant: Toshinobu Niinae ,  Koshi Yoshimura ,  Koji Kamiyama

Inventor： Toshinobu Niinae ,  Koshi Yoshimura ,  Koji Kamiyama

IPC: C23C22/48 ,  H01F1/053 ,  H01F7/00

CPC classification number: H01F41/026 ,  B22F3/24 ,  B22F2003/241 ,  B22F2207/01 ,  C22C33/0278 ,  C22C38/00 ,  C22C2202/02 ,  C23C22/34 ,  H01F1/0577 ,  H01F7/0221 ,  Y10T428/12465

Abstract: An object of the present invention is to provide an R—Fe—B based sintered magnet having on a surface thereof a chemical conversion film with higher corrosion resistance than a conventional chemical conversion film such as a phosphate film, and a method for producing the same. The corrosion-resistant magnet of the present invention as a means for achieving the object is characterized by comprising a chemical conversion film containing at least Zr, Nd, fluorine, and oxygen as constituent elements and not containing phosphorus directly on a surface of an R—Fe—B based sintered magnet, wherein R is a rare-earth element including at least Nd.

Abstract translation: 本发明的目的是提供一种R-Fe-B系烧结磁体，其表面上具有比常规的磷酸盐膜化学转化膜更高的耐腐蚀性的化学转化膜及其制造方法 。 作为实现该目的的手段的本发明的耐腐蚀磁体的特征在于，包括至少含有Zr，Nd，氟和氧作为构成元素的化学转化膜，并且直接在R- Fe-B系烧结磁体，其中R是至少包括Nd的稀土元素。

公开(公告)号：US20130313125A1

公开(公告)日：2013-11-28

申请号：US13984943

申请日：2012-01-04

Applicant: Masanao Kamachi ,  Koshi Yoshimura ,  Takahiro Isozaki

Inventor： Masanao Kamachi ,  Koshi Yoshimura ,  Takahiro Isozaki

IPC: C25D7/00

CPC classification number: C25D7/001 ,  C23C18/1844 ,  C23G1/085 ,  C23G1/24 ,  C25D3/12 ,  C25D5/34 ,  C25D17/16 ,  H01F1/0577 ,  H01F41/026

Abstract: An object of the present invention is to provide a production method for an R—Fe—B based sintered magnet having a plating film excellent in adhesiveness on the surface thereof, by conducting a series of processes of acid cleaning and smut removal as pretreatments of a plating treatment of an R—Fe—B based sintered magnet, and the subsequent plating treatment, effectively without requiring troubles. The production method for an R—Fe—B based sintered magnet having a plating film on the surface thereof of the present invention, as a solution method therefor, is characterized in that a series of processes of acid cleaning and smut removal of a magnet as pretreatments of a plating treatment, and the subsequent plating treatment is conducted consistently with a state, in which the magnet is placed in a barrel made of synthetic resin, and that the smut removal is conducted by ultrasonic cleaning of the magnet with rotating the barrel in water in which the dissolved oxygen amount is set to 0.1 ppm to 6 ppm by degassing.

Abstract translation: 本发明的目的是提供一种R-Fe-B系烧结磁体的制造方法，其具有通过进行一系列酸清洗和除杂处理的方法，其中具有优异的表面粘附性的镀膜 R-Fe-B系烧结磁体的电镀处理以及后续的电镀处理，而不需要麻烦。 本发明的表面具有镀膜的R-Fe-B系烧结磁体的制造方法作为其溶液方法的特征在于，将一系列酸洗和除去磁铁的方法作为 电镀处理的预处理和随后的电镀处理与将磁体放置在由合成树脂制成的圆筒中的状态一致地进行，并且通过使滚筒旋转来对磁体进行超声波清洗来进行黑线除去 通过脱气将溶解氧量设定为0.1ppm〜6ppm的水。

公开(公告)号：US20120229240A1

公开(公告)日：2012-09-13

申请号：US13455170

申请日：2012-04-25

Applicant: Koshi YOSHIMURA ,  Hideyuki MORIMOTO ,  Tomoori ODAKA

Inventor： Koshi YOSHIMURA ,  Hideyuki MORIMOTO ,  Tomoori ODAKA

IPC: H01F7/02

CPC classification number: H01F1/0577 ,  B22F7/062 ,  B22F2009/044 ,  B22F2998/10 ,  B22F2999/00 ,  H01F41/0293 ,  Y10T428/12028 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/013 ,  B22F2202/05

Abstract: In a method for producing an R—Fe—B based rare-earth sintered magnet according to the present invention, first, provided is an R—Fe—B based rare-earth sintered magnet body including, as a main phase, crystal grains of an R2Fe14B type compound that includes a light rare-earth element RL, which is at least one of Nd and Pr, as a major rare-earth element R. Thereafter, the sintered magnet body is heated while a heavy rare-earth element RH, which is at least one element selected from the group consisting of Dy, Ho and Tb, is supplied to the surface of the sintered magnet body, thereby diffusing the heavy rare-earth element RH into the rare-earth sintered magnet body.

Abstract translation: 在本发明的R-Fe-B系稀土类烧结磁体的制造方法中，首先，提供作为主相的作为主相的R-Fe-B系稀土类烧结磁体， 作为主要的稀土类元素R的包含作为Nd和Pr中的至少一种的轻质稀土元素RL的R2Fe14B型化合物。此后，在重稀土类元素RH， 将选自Dy，Ho和Tb中的至少一种元素供给到烧结磁体的表面，从而将重稀土元素RH扩散到稀土类烧结磁体中。

公开(公告)号：US20110273252A1

公开(公告)日：2011-11-10

申请号：US13056387

申请日：2009-07-30

Applicant: Atsushi Kikugawa ,  Koshi Yoshimura ,  Yoshimi Tochishita ,  Masanao Kamachi ,  Nobuhiro Misumi

Inventor： Atsushi Kikugawa ,  Koshi Yoshimura ,  Yoshimi Tochishita ,  Masanao Kamachi ,  Nobuhiro Misumi

IPC: H01F7/02 ,  C23C22/00 ,  H01F41/02

CPC classification number: H01F41/026 ,  B22F3/24 ,  B22F2003/242 ,  B22F2998/00 ,  B32B15/012 ,  C22C33/0278 ,  C22C38/005 ,  C22C38/10 ,  C22C2202/02 ,  H01F1/0577 ,  H01F7/0221

Abstract: An object of the present invention is to provide an R—Fe—B based sintered magnet that exhibits excellent corrosion resistance and maintains excellent adhesion strength to an adherend even under severe conditions, and a method for producing the same. A corrosion-resistant magnet of the present invention as a means for achieving the object is characterized by comprising a chemical conversion film containing at least Zr, V, Al, fluorine, and oxygen as constituent elements and not containing phosphorus over a surface of an R—Fe—B based sintered magnet with a film made of Al or an alloy thereof therebetween.

Abstract translation: 本发明的目的在于提供即使在苛刻条件下也能显示出优良的耐腐蚀性和对被粘物的粘合强度优异的R-Fe-B系烧结磁铁及其制造方法。 作为实现该目的的手段的本发明的耐腐蚀磁体的特征在于，包括至少含有Zr，V，Al，氟和氧作为构成元素并且在R表面上不含磷的化学转化膜 -Fe-B系烧结磁体，其中由Al制成的膜或它们之间的合金。

公开(公告)号：US09267217B2

公开(公告)日：2016-02-23

申请号：US13984943

申请日：2012-01-04

Applicant: Masanao Kamachi ,  Koshi Yoshimura ,  Takahiro Isozaki

Inventor： Masanao Kamachi ,  Koshi Yoshimura ,  Takahiro Isozaki

IPC: B01J19/08 ,  B01J19/10 ,  C25D7/00 ,  C25D5/34 ,  C23G1/24 ,  H01F41/02 ,  C25D17/16 ,  C23G1/08 ,  H01F1/057 ,  C25D3/12

CPC classification number: C25D7/001 ,  C23C18/1844 ,  C23G1/085 ,  C23G1/24 ,  C25D3/12 ,  C25D5/34 ,  C25D17/16 ,  H01F1/0577 ,  H01F41/026

Abstract: An object of the present invention is to provide a production method for an R—Fe—B based sintered magnet having a plating film excellent in adhesiveness on the surface thereof, by conducting a series of processes of acid cleaning and smut removal as pretreatments of an R—Fe—B based sintered magnet, and the subsequent plating treatment effectively without causing trouble. The production method of the present invention includes a series of processes of acid cleaning and smut removal of a magnet as pretreatments, and the subsequent plating treatment is conducted consistently with a state, in which the magnet is placed in a barrel made of synthetic resin. The smut removal is conducted by ultrasonic cleaning of the magnet with rotating the barrel in water in which the dissolved oxygen amount is set to 0.1 ppm to 6 ppm by degassing.

Abstract translation: 本发明的目的是提供一种R-Fe-B系烧结磁体的制造方法，其具有通过进行一系列酸清洗和除去杂质的方法，其中具有优异的表面粘合性的镀膜 R-Fe-B系烧结磁体，有效地进行电镀处理，不会造成故障。 本发明的制造方法包括一系列作为预处理的酸洗和除铁方法，并且随后的电镀处理与将磁体放置在由合成树脂制成的筒中的状态下一致地进行。 通过在水中旋转桶的磁体的超声波清洗来进行污迹除去，其中溶解氧量通过脱气设定为0.1ppm至6ppm。

公开(公告)号：US08206516B2

公开(公告)日：2012-06-26

申请号：US12092286

申请日：2007-03-01

Applicant: Koshi Yoshimura ,  Hideyuki Morimoto ,  Tomoori Odaka

Inventor： Koshi Yoshimura ,  Hideyuki Morimoto ,  Tomoori Odaka

IPC: H01F1/057

CPC classification number: H01F1/0577 ,  B22F7/062 ,  B22F2009/044 ,  B22F2998/10 ,  B22F2999/00 ,  H01F41/0293 ,  Y10T428/12028 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/013 ,  B22F2202/05

Abstract: In a method for producing an R—Fe—B based rare-earth sintered magnet according to the present invention, first, provided is an R—Fe—B based rare-earth sintered magnet body including, as a main phase, crystal grains of an R2Fe14B type compound that includes a light rare-earth element RL, which is at least one of Nd and Pr, as a major rare-earth element R. Thereafter, the sintered magnet body is heated while a heavy rare-earth element RH, which is at least one element selected from the group consisting of Dy, Ho and Tb, is supplied to the surface of the sintered magnet body, thereby diffusing the heavy rare-earth element RH into the rare-earth sintered magnet body.

Abstract translation: 在本发明的R-Fe-B系稀土类烧结磁体的制造方法中，首先，提供作为主相的作为主相的R-Fe-B系稀土类烧结磁体， 作为主要的稀土类元素R的包含作为Nd和Pr中的至少一种的轻质稀土元素RL的R2Fe14B型化合物。此后，在重稀土类元素RH， 将选自Dy，Ho和Tb中的至少一种元素供给到烧结磁体的表面，从而将重稀土元素RH扩散到稀土类烧结磁体中。

公开(公告)号：US06211762B1

公开(公告)日：2001-04-03

申请号：US09242825

申请日：1999-02-24

Applicant: Fumiaki Kikui ,  Masako Ikegami ,  Koshi Yoshimura

Inventor： Fumiaki Kikui ,  Masako Ikegami ,  Koshi Yoshimura

IPC: H01F702

CPC classification number: H01F41/026 ,  Y10T428/12743

Abstract: An R—Fe—B permanent magnet body is cleaned by ion sputtering, after which a Ti coating film is formed on the surface of the magnet body by a thin film forming method such as ion plating, after which an Al coating film is formed as an intermediate layer, after which an AlN coating film, TiN coating film, or Ti1−xAlxN coating film is formed by a thin film forming method such as ion reactive plating in N2 gas. By having the Al coating film layer present as an intermediate layer, it acts as a sacrificial coating film for the permanent magnet body and the foundation layer Ti coating film, whereupon adhesion with the Ti coating film is sharply improved, and the time until corrosion develops is lengthened, even in such severe corrosion resistance tests as salt water spray tests. Thus R—Fe—B permanent magnets are obtained which exhibit outstanding salt water spray resistance and wear resistance and which have stable magnetic characteristics.

Abstract translation: 通过离子溅射清洗R-Fe-B永磁体，然后通过诸如离子电镀的薄膜形成方法在磁体的表面上形成Ti涂膜，然后形成Al涂膜 中间层，然后通过诸如在N 2气体中的离子反应电镀的薄膜形成方法形成AlN涂膜，TiN涂膜或Ti1-xAlxN涂膜。 通过使Al涂膜层作为中间层，其作为永磁体和基础层Ti涂膜的牺牲涂膜，由此与Ti涂膜的粘合性急剧提高，直到腐蚀发展的时间 即使在盐水喷雾试验等严酷的耐腐蚀试验中也能延长使用寿命。 因此，获得具有优异的耐盐水喷雾性和耐磨性并且具有稳定的磁特性的R-Fe-B永磁体。

公开(公告)号：US08945318B2

公开(公告)日：2015-02-03

申请号：US13456250

申请日：2012-04-26

Applicant: Koshi Yoshimura ,  Hideyuki Morimoto ,  Tomoori Odaka

Inventor： Koshi Yoshimura ,  Hideyuki Morimoto ,  Tomoori Odaka

IPC: H01F7/02 ,  C22C38/00 ,  B22F3/24 ,  C22C33/02 ,  H01F1/057 ,  H01F41/02

CPC classification number: C22C38/005 ,  B22F3/24 ,  B22F2003/248 ,  B22F2999/00 ,  C22C33/0278 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293 ,  B22F2207/01 ,  B22F2201/20

Abstract: In an R—Fe—B based rare-earth sintered magnet according to the present invention, at a depth of 20 μm under the surface of its magnet body, crystal grains of an R2Fe14B type compound have an (RL1-xRHx)2Fe14B (where 0.2≦x≦0.75) layer with a thickness of 1 nm to 2 μm in their outer periphery. In this case, the light rare-earth element RL is at least one of Nd and Pr, and the heavy rare-earth element RH is at least one element selected from the group consisting of Dy, Ho and Tb.

Abstract translation: 在根据本发明的R-Fe-B系稀土烧结磁体中，在其磁体表面的20μm深处，R2Fe14B型化合物的晶粒具有（RL1-xRHx）2Fe14B（其中 0.2＆nlE; x＆nlE; 0.75）层，其外周的厚度为1nm〜2μm。 在这种情况下，轻稀土元素RL是Nd和Pr中的至少一种，重稀土元素RH是选自Dy，Ho和Tb中的至少一种元素。

公开(公告)号：US20130180860A1

公开(公告)日：2013-07-18

申请号：US13825055

申请日：2011-09-29

Applicant: Masanao Kamachi ,  Koshi Yoshimura

Inventor： Masanao Kamachi ,  Koshi Yoshimura

IPC: H01F41/02

CPC classification number: H01F41/026 ,  C25D3/38 ,  C25D7/001 ,  H01F7/0221 ,  H01F41/26

Abstract: An object of the present invention is to provide a novel method for forming an electrolytic copper plating film having excellent adhesion on the surface of a rare earth metal-based permanent magnet. The method of the present invention as a means for achieving the object is characterized in that after a magnet is immersed in a plating solution, a cathode current density of 0.05 A/dm2 to 4.0 A/dm2 for performing an electrolytic copper plating treatment is applied thereto over 10 seconds to 180 seconds to start the treatment.

Abstract translation: 本发明的目的是提供一种在稀土金属基永磁体的表面上形成具有优异粘附性的电解铜电镀膜的新型方法。 作为实现该目的的方法的本发明的方法的特征在于，在将磁体浸入电镀液中之后，施加用于进行电解铜电镀处理的0.05A / dm 2至4.0A / dm 2的阴极电流密度 超过10秒至180秒开始治疗。

公开(公告)号：US20120206227A1

公开(公告)日：2012-08-16

申请号：US13456250

申请日：2012-04-26

Applicant: Koshi YOSHIMURA ,  Hideyuki MORIMOTO ,  Tomoori ODAKA

Inventor： Koshi YOSHIMURA ,  Hideyuki MORIMOTO ,  Tomoori ODAKA

IPC: H01F7/02

CPC classification number: C22C38/005 ,  B22F3/24 ,  B22F2003/248 ,  B22F2999/00 ,  C22C33/0278 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293 ,  B22F2207/01 ,  B22F2201/20

Abstract: In an R—Fe—B based rare-earth sintered magnet according to the present invention, at a depth of 20 μm under the surface of its magnet body, crystal grains of an R2Fe14B type compound have an (RL1−xRHx)2Fe14B (where 0.2≦x≦0.75) layer with a thickness of 1 nm to 2 μm in their outer periphery. In this case, the light rare-earth element RL is at least one of Nd and Pr, and the heavy rare-earth element RH is at least one element selected from the group consisting of Dy, Ho and Tb.

Abstract translation: 在本发明的R-Fe-B族稀土类烧结磁体中，在磁体表面的20μm深度处，R2Fe14B型化合物的晶粒具有（RL1-xRHx）2Fe14B（其中， 0.2＆nlE; x＆nlE; 0.75）层，其外周的厚度为1nm〜2μm。 在这种情况下，轻稀土元素RL是Nd和Pr中的至少一种，重稀土元素RH是选自Dy，Ho和Tb中的至少一种元素。