公开(公告)号：US20180083179A1

公开(公告)日：2018-03-22

申请号：US15706800

申请日：2017-09-18

Applicant: SHOWA DENKO K.K.

Inventor： Yasutaka YOSHIDA ,  Akifumi MURAOKA

IPC: H01L35/32 ,  F25B21/02 ,  H01L23/38

CPC classification number: H01L35/32 ,  F25B21/02 ,  H01L23/38

Abstract: A thermoelectric conversion device includes: a thermoelectric conversion unit that includes thermoelectric conversion elements converting heat caused by temperature difference between a high-temperature side and a low-temperature side into electricity; a base unit that is loaded with the thermoelectric conversion unit to face the low-temperature side of the thermoelectric conversion unit; a lid unit that covers the thermoelectric conversion unit to face the high-temperature side of the thermoelectric conversion unit; a press ring that is provided over an entire circumference of outside of periphery of the thermoelectric conversion unit and sandwiches the brim portion of the lid unit between thereof and the base unit; and plural screws that position the lid unit with respect to the base unit and the thermoelectric conversion unit between the base unit and the lid unit by fixing the press ring to the base unit via the brim portion of the lid unit.

公开(公告)号：US20140314612A1

公开(公告)日：2014-10-23

申请号：US14257512

申请日：2014-04-21

Applicant: SHOWA DENKO K.K.

Inventor： Kenichiro NAKAJIMA ,  Akifumi MURAOKA ,  Takashi YAMAZAKI

IPC: H01F1/053 ,  H01F41/02

CPC classification number: H01F1/0536 ,  B22F2998/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0293 ,  B22F3/02 ,  B22F3/10

Abstract: A method of manufacturing an R-T-B rare earth sintered magnet includes a process of disposing and sintering a compact of a first alloy powder and an alloy material of a second alloy in a chamber of a sintering furnace. The first alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The first alloy contains 11 at % to 17 at % of R, 4.5 at % to 6 at % of B, 0 at % to 1.6 at % of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at % to 29 at %. The second alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The second alloy contains 11 at % to 20 at % of R, 4.5 at % to 6 at % of B, and 0 at % to 1.6 at % of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at % to 29 at %.

Abstract translation: R-T-B系稀土类烧结磁体的制造方法包括在烧结炉的室内配置并烧结第一合金粉末和第二合金的合金材料的坯料的工序。 第一合金由代表稀土元素的R表示，T表示基本上含有Fe的过渡金属，代表Al和/或Ga，B，Cu和不可避免的杂质的金属元素M. 第一合金含有11原子％至17原子％的R，4.5原子％至6原子％的B，0原子％至1.6原子％的M，T为余量，所有稀土元素中的Dy含量 为0 at％至29at％。 第二合金由代表稀土元素的R表示，T表示基本上含有Fe的过渡金属，代表Al和/或Ga，B，Cu和不可避免的杂质的金属元素M. 第二合金含有11原子％〜20原子％的R，4.5原子％〜6原子％的B，0为0原子％〜1.6原子％的M，余量为T，所有稀土中的Dy含量 元素为0 at％至29 at％。

公开(公告)号：US20160268024A1

公开(公告)日：2016-09-15

申请号：US15066143

申请日：2016-03-10

Applicant: SHOWA DENKO K.K.

Inventor： Takashi YAMAZAKI ,  Akifumi MURAOKA ,  Kenichiro NAKAJIMA

IPC: H01F1/057 ,  C22C38/00 ,  C22C38/10 ,  C22C38/06 ,  C22C38/16 ,  C22C38/14

CPC classification number: C22C38/002 ,  B22F3/10 ,  C22C33/0278 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577

Abstract: An R-T-B-based rare earth sintered magnet, comprising a rare earth element R, B, a metallic element M which includes one or more metals selected from Al, Ga and Cu, a transition metal T which includes Fe as a main component, and inevitable impurities, wherein the sintered magnet includes 13 atom % to 15.5 atom % of R, 5.0 atom % to 6.0 atom % of B, 0.1 atom % to 2.4 atom % of M, and T and the inevitable impurities as a balance, and wherein the sintered magnet includes 0.015 atom % to 0.10 atom % of Zr as the transition metal T.

Abstract translation: 一种包含稀土元素R，B的金属元素M的RTB基稀土烧结磁体，包括选自Al，Ga和Cu中的一种或多种金属的金属元素M，包含Fe作为主要成分的过渡金属T和不可避免的 杂质，其中，所述烧结磁体包含13原子％〜15.5原子％的R，5.0原子％〜6.0原子％的B，0.1原子％〜2.4原子％的M，T和余量的不可避免的杂质， 作为过渡金属T，烧结磁体包含0.015原子％至0.10原子％的Zr。

公开(公告)号：US20170162305A1

公开(公告)日：2017-06-08

申请号：US15366592

申请日：2016-12-01

Applicant: SHOWA DENKO K.K.

Inventor： Takashi YAMAZAKI ,  Kenichiro NAKAJIMA ,  Akifumi MURAOKA

IPC: H01F1/055 ,  C22C38/16 ,  C22C38/10 ,  B22F3/16 ,  C22C38/00 ,  B22D23/00 ,  C21D6/00 ,  B22F9/04 ,  H01F41/02 ,  C22C38/06

CPC classification number: H01F1/0557 ,  B22D23/00 ,  B22F3/16 ,  B22F9/04 ,  B22F2301/355 ,  B22F2998/10 ,  C21D6/007 ,  C22C33/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  B22F3/02 ,  B22F3/10

Abstract: In an alloy for an R-T-B-based rare earth sintered magnet of the present invention formed of a rare earth element R, a transition metal T containing Fe as a main component, a metal element M containing one or more types of metals selected from Al, Ga, and Cu, and B and inevitable impurities, 13 at % to 16 at % of R is contained, 4.5 at % to 6.2 at % of B is contained, 0.1 at % to 2.4 at % of M is contained, the balance is T and the inevitable impurities, a proportion of Dy in the entire rare earth element is 0 at % to 65 at %, Formula 1 described below is satisfied, a main phase containing R2Fe14B and an alloy grain boundary phase containing more R than the main phase are included, and a distance between the alloy grain boundary phases is greater than or equal to 3 μm and less than or equal to 11 μm. 0.30≦B/TRE≦0.37  (Formula 1)

公开(公告)号：US20160284452A1

公开(公告)日：2016-09-29

申请号：US15075757

申请日：2016-03-21

Applicant: SHOWA DENKO K.K.

Inventor： Masaki HORIKITA ,  Kenichiro NAKAJIMA ,  Akifumi MURAOKA

IPC: H01F1/053 ,  C22C38/00 ,  B22F3/24 ,  B22F3/10 ,  H01F41/02 ,  C21D9/00

CPC classification number: C22C38/005 ,  B22F3/24 ,  B22F2998/10 ,  C21D9/00 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  B22F3/10 ,  B22F2003/248

Abstract: An R-T-B-based rare earth sintered magnet comprising: a rare earth element R, B, a metallic element M which includes one or more metals selected from Al, Ga and Cu, a transition metal T which includes Fe as a main component and inevitable impurities, wherein the sintered magnet includes: 13 to 15.5 atom % of R, 5.0 to 6.0 atom % of B, 0.1 to 2.4 atom % of M, and T and the inevitable impurities as a balance, and wherein the sintered magnet includes more than 0 atom % and 0.01 atom % or less of Tb as the rare earth element R.

Abstract translation: 一种RTB系稀土烧结磁体，其特征在于，含有：稀土类元素R，B，含有选自Al，Ga，Cu中的一种以上的金属的金属元素M，以Fe为主成分的过渡金属T和不可避免的杂质 其特征在于，所述烧结磁体包括：13〜15.5原子％的R，5.0〜6.0原子％的B，0.1〜2.4原子％的M，以及T和余量的不可避免的杂质，其中，所述烧结磁体包含大于0 原子％和0.01原子％以下的Tb作为稀土元素R.