公开(公告)号：US20070099033A1

公开(公告)日：2007-05-03

申请号：US10581212

申请日：2004-12-08

申请人： Yoshihiko Minachi ,  Junichi Nagaoka ,  Shunsuke Kurasawa ,  Noboru Ito ,  Taku Murase ,  Takeshi Masuda ,  Kenya Takagawa ,  Hidenobu Umeda

发明人： Yoshihiko Minachi ,  Junichi Nagaoka ,  Shunsuke Kurasawa ,  Noboru Ito ,  Taku Murase ,  Takeshi Masuda ,  Kenya Takagawa ,  Hidenobu Umeda

IPC分类号： G11B5/65 ,  C04B35/40 ,  H01F1/00 ,  G11B5/706

CPC分类号： C04B35/632 ,  C01G49/0036 ,  C01G49/0054 ,  C01G49/009 ,  C01P2006/42 ,  C04B35/2633 ,  C04B35/2683 ,  C04B35/6261 ,  C04B35/62625 ,  C04B35/6268 ,  C04B35/63 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3272 ,  C04B2235/3274 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3286 ,  C04B2235/3418 ,  C04B2235/422 ,  C04B2235/449 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/605 ,  C04B2235/652 ,  C04B2235/658 ,  C04B2235/763 ,  C04B2235/767 ,  C04B2235/785 ,  C04B2235/80 ,  C04B2235/83 ,  H01F1/11 ,  Y10T428/32

摘要： A ferrite magnetic material comprising a main phase of W-type is provided which has magnetic properties improved through the optimization of additives. The ferrite magnetic material comprises a main constituent having a compound represented by composition formula AFe2+aFe3+bO27 (wherein A comprises at least one element selected from Sr, Ba and Pb; 1.5≦a≦2.1; and 12.9≦b≦16.3), a first additive containing a Ca constituent (0.3 to 3.0 wt % in terms of CaCO3) and/or a Si constituent (0.2 to 1.4 wt % in terms of SiO2), and a second additive containing at least one of an Al constituent (0.01 to 1.5 wt % in terms of Al2O3), a W constituent (0.01 to 0.6 wt % in terms of WO3), a Ce constituent (0.001 to 0.6 wt % in terms of CeO2), a Mo constituent (0.001 to 0.16 wt % in terms of MoO3), and a Ga constituent (0.001 to 15 wt % in terms of Ga2O3).

摘要翻译： 提供了包括W型主相的铁氧体磁性材料，其通过优化添加剂而具有改进的磁性能。 铁氧体磁性材料包括具有由组成式AFe 2 +和/或Fe 3+组成的化合物的主要成分 （其中A包含选自Sr，Ba和Pb中的至少一种元素; 1.5 <= a <= 2.1;和12.9 <= b <= 16.3），含有Ca 成分（以CaCO 3 3计为0.3〜3.0重量％）和/或Si成分（以SiO 2 2计为0.2〜1.4重量％），第二添加剂 含有Al成分中的至少一种（按Al 2 O 3 3计算为0.01〜1.5重量％），W成分（按WO排列为0.01〜0.6重量％ 3成分），Ce成分（按CeO 2计算为0.001〜0.6重量％），Mo成分（按MoO 3计为0.001〜0.16重量％ ）和Ga成分（按Ga 2 O 3 3换算为0.001〜15重量％）。

公开(公告)号：US07034649B2

公开(公告)日：2006-04-25

申请号：US10931299

申请日：2004-08-31

申请人： Kensaku Asakura ,  Takuya Aoki ,  Taku Murase

发明人： Kensaku Asakura ,  Takuya Aoki ,  Taku Murase

IPC分类号： H01F27/24

CPC分类号： C04B35/6261 ,  C01G49/00 ,  C01G49/0063 ,  C01G49/009 ,  C01G53/006 ,  C01P2002/54 ,  C01P2002/88 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/32 ,  C01P2006/42 ,  C04B35/265 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/5481 ,  C04B2235/608 ,  C04B2235/784 ,  C04B2235/786 ,  C04B2235/96 ,  H01F1/344

摘要： A ferrite material having a high Q value and also having a small absolute value of αμir in a wide temperature range between −40° C. and 160° C.A ferrite material, which comprises, as main constituents, 45.5 to 48 mol % of Fe2O3, 5 to 10.5 mol % of CuO, 26 to 30 mol % of ZnO, and the balance substantially being NiO, and further comprises, as an additive, cobalt oxide within a range between 0.005 and 0.045 wt % in terms of CoO.The ferrite material of the present invention has properties such as each of the absolute value of αμir−40˜20 and the absolute value of αμir20˜160 of 3 ppm/° C. or less, and a Q value at 125 kHz of 170 or more.

摘要翻译： 在-40℃〜160℃之间的宽温度范围内具有高Q值且绝对值小的铁氧体材料。作为主要成分的铁氧体材料为45.5〜48摩尔％ Fe 2 O 3，5〜10.5mol％的CuO，26〜30mol％的ZnO，余量基本上为NiO，还包含作为添加剂， 氧化钴以CoO计为0.005〜0.045wt％的范围。 本发明的铁氧体材料具有以下特性，例如，每个绝对值为阿拉姆 -40〜20 <！ - SIPO - > 在125kHz以上的Q值为170以上。

公开(公告)号：US20050167632A1

公开(公告)日：2005-08-04

申请号：US11035877

申请日：2005-01-10

申请人： Eiichiro Fukuchi ,  Akira Kakinuma ,  Kenya Takagawa ,  Fumitaka Baba ,  Taku Murase

发明人： Eiichiro Fukuchi ,  Akira Kakinuma ,  Kenya Takagawa ,  Fumitaka Baba ,  Taku Murase

IPC分类号： C04B35/38 ,  C01G49/00 ,  C01G53/00 ,  C04B35/26 ,  H01F1/34 ,  H01F41/02 ,  H01F1/00

CPC分类号： H01F41/0246 ,  C01G49/0072 ,  C01G53/006 ,  C01P2002/52 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/2658 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/62655 ,  C04B35/62675 ,  C04B35/6303 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3262 ,  C04B2235/3263 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3284 ,  C04B2235/3286 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5463 ,  C04B2235/656 ,  C04B2235/6584 ,  C04B2235/77 ,  C04B2235/786 ,  C04B2235/85 ,  H01F1/344

摘要： The present invention provides a Mn—Zn ferrite which is low in the loss in the frequency range between a few 10 kHz and a few 100 kHz and high in the saturation magnetic flux density in the vicinity of 100° C. The present invention comprising the steps of compacting a powder having a specific surface area (based on the BET method) of 2.0 to 5.0 m2/g and a 50% particle size of 0.7 to 2.0 μm into a compacted body having a predetermined shape and obtaining a sintered body by sintering the compacted body. It is preferable that a Mn—Zn ferrite comprises, as main constituents, 54 to 57 mol % of Fe2O3, 5 to 10 mol % of ZnO, 4 mol % or less (not inclusive of 0%) of NiO, and the balance substantially being MnO.

摘要翻译： 本发明提供一种Mn-Zn铁氧体，其在几个10kHz和几个100kHz之间的频率范围内的损耗低，在100℃附近的饱和磁通密度高。本发明包括 将具有2.0-5.0μm2 / g的比表面积（基于BET法）的粉末和0.7-2.0μm的50％粒度的粉末压制成具有预定的 通过烧结压实体来获得烧结体。 优选的是，Mn-Zn铁氧体主要成分为54〜57摩尔％的Fe 2 O 3 3，5〜10摩尔％的ZnO，4摩尔 ％以下（不包括0％）NiO，余量基本上为MnO。

公开(公告)号：US20050062576A1

公开(公告)日：2005-03-24

申请号：US10931299

申请日：2004-08-31

申请人： Kensaku Asakura ,  Takuya Aoki ,  Taku Murase

发明人： Kensaku Asakura ,  Takuya Aoki ,  Taku Murase

IPC分类号： C01G49/00 ,  C01G53/00 ,  C04B35/26 ,  H01F1/34 ,  H01F1/00

CPC分类号： C04B35/6261 ,  C01G49/00 ,  C01G49/0063 ,  C01G49/009 ,  C01G53/006 ,  C01P2002/54 ,  C01P2002/88 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/32 ,  C01P2006/42 ,  C04B35/265 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/5481 ,  C04B2235/608 ,  C04B2235/784 ,  C04B2235/786 ,  C04B2235/96 ,  H01F1/344

摘要： A ferrite material having a high Q value and also having a small absolute value of αμir in a wide temperature range between −40° C. and 160° C. A ferrite material, which comprises, as main constituents, 45.5 to 48 mol % of Fe2O3, 5 to 10.5 mol % of CuO, 26 to 30 mol % of ZnO, and the balance substantially being NiO, and further comprises, as an additive, cobalt oxide within a range between 0.005 and 0.045 wt % in terms of CoO. The ferrite material of the present invention has properties such as each of the absolute value of αμir−40˜20 and the absolute value of αμir20˜160 of 3 ppm/° C. or less, and a Q value at 125 kHz of 170 or more.

摘要翻译： 在-40℃〜160℃之间的宽温度范围内具有高Q值且绝对值小的铁氧体材料。作为主要成分的铁氧体材料为45.5〜48摩尔％ Fe 2 O 3，5〜10.5摩尔％的CuO，26〜30摩尔％的ZnO，余量基本上为NiO，还包含以CoO计为0.005〜0.045重量％的氧化钴作为添加剂。 本发明的铁氧体材料具有以下特性：Alphamuir-40〜20的绝对值和Alphamuir 20〜160的绝对值为3ppm /℃以下，125kHz时的Q值为170或 更多。

公开(公告)号：US06407693B1

公开(公告)日：2002-06-18

申请号：US09487613

申请日：2000-01-20

申请人： Taku Murase ,  Hiroshi Kurihara ,  Toshifumi Saitoh ,  Motonari Yanagawa ,  Kozo Hayashi ,  Kyoichi Fujimoto

发明人： Taku Murase ,  Hiroshi Kurihara ,  Toshifumi Saitoh ,  Motonari Yanagawa ,  Kozo Hayashi ,  Kyoichi Fujimoto

IPC分类号： H01Q1700

CPC分类号： H01Q17/008 ,  H01Q17/00

摘要： The radio wave absorbent-assembling member comprises a radio wave absorptive thin material capable of assembling a structure in a desired form, wherein the thin material contains a conductive material therein and/or has on the surface thereof a conductive layer containing a conductive material, and a radio wave absorbent having a stereo-structure can be obtained by folding the above radio wave absorbent-assembling member and joining together the end portions of the thin material.

摘要翻译： 无线电波吸收组件包括能够组装所需形式的结构的无线电波吸收薄材料，其中薄材料在其中包含导电材料和/或在其表面上具有包含导电材料的导电层，以及 可以通过折叠上述无线电波吸收组件并将薄材料的端部接合在一起来获得具有立体结构的无线电波吸收体。

公开(公告)号：US06375862B1

公开(公告)日：2002-04-23

申请号：US09663197

申请日：2000-09-18

申请人： Hidenobu Umeda ,  Taku Murase ,  Isao Kanada ,  Tatsuya Shimazaki

发明人： Hidenobu Umeda ,  Taku Murase ,  Isao Kanada ,  Tatsuya Shimazaki

IPC分类号： C04B3526

CPC分类号： C04B35/2625 ,  C04B35/265 ,  H01F1/344

摘要： The present invention can provide a MgCuZn-based ferrite sintered compact which is constituted by having as substantial main component compositions 7.5 to 23.0 mole % of magnesium oxide, 7.0 to 20.0 mole % of copper oxide, 19.0 to 24.2 mole % of zinc oxide and 48.5 to 50.3 mole % of ferric oxide, and the average particle diameter of the ferrite sintered compact is in a range of 1.10 to 7.30 &mgr;m while the standard deviation &sgr; of the size distribution is in a range of 0.60 to 10.00, resulting in the ferrite sintered compact which has a high impedance with a frequency of not less than 50 MHz and is capable of efficiently cutting of radiant noise by selecting inexpensive materials.

摘要翻译： 本发明可以提供一种MgCuZn系铁氧体烧结体，其主要成分为7.5〜23.0摩尔％的氧化镁，7.0〜20.0摩尔％的氧化铜，19.0〜24.2摩尔％的氧化锌，48.5重量％ 至50.3摩尔％的氧化铁，铁素体烧结体的平均粒径在1.10〜7.30μm的范围内，而尺寸分布的标准偏差σ在0.60〜10.00的范围内，导致铁氧体烧结 具有频率不低于50MHz的高阻抗，并且能够通过选择便宜的材料有效地切割辐射噪声。

公开(公告)号：US06259394B1

公开(公告)日：2001-07-10

申请号：US09390293

申请日：1999-09-03

申请人： Taku Murase ,  Naoyoshi Sato ,  Hiroshi Kurihara ,  Toshifumi Saitoh ,  Motonari Yanagawa ,  Kozo Hayashi ,  Kyoichi Fujimoto

发明人： Taku Murase ,  Naoyoshi Sato ,  Hiroshi Kurihara ,  Toshifumi Saitoh ,  Motonari Yanagawa ,  Kozo Hayashi ,  Kyoichi Fujimoto

IPC分类号： H01Q1700

CPC分类号： H05K9/0069 ,  H01Q17/008

摘要： An electrically conductive member constituted by at least one member of the group consisting of carbon black, graphite and carbon fiber, a powdered or granulated material of an inorganic hollow body and inorganic reinforcing fiber are bonded to one another by an inorganic adhesive agent to thereby form an electric wave absorber. The electric wave absorber exhibits excellent electric wave absorbing power because of both the electrically conductive member and the powdered or granulated material of the inorganic hollow body which are contained in the electric wave absorber. The electric wave absorber has excellent mechanical strength because of the inorganic reinforcing fiber which is contained in the electric wave absorber. The electric wave absorber exhibits excellent nonflammable characteristic because of both the powdered or granulated material of the inorganic hollow body and the inorganic reinforcing fiber which are contained in the electric wave absorber. Preferably, the electric wave absorber is provided with a nonflammable layer which is integrally bonded to at least one portion thereof and which is constituted by at least one member of the group consisting of a nonflammable sheet made from a slurry containing sepiolite as a main component, and an inorganic coating agent layer.

摘要翻译： 由碳黑，石墨和碳纤维组成的组中的至少一个构成的导电构件，无机中空体的粉末或粒状材料和无机增强纤维通过无机粘合剂彼此粘合，从而形成 电波吸收器。 电波吸收体既包含在电波吸收体中的无机中空体的导电性构件和粉末状或造粒材料，则表现出优异的电波吸收能力。 由于包含在电波吸收体中的无机增强纤维，电波吸收体具有优异的机械强度。 由于电波吸收体中含有的无机中空体的粉末状或粒状物质和无机增强纤维两者，电波吸收体表现出优异的不易燃特性。 优选地，电波吸收体具有与其至少一部分一体地结合的不易燃层，其由至少一种由含有海泡石作为主要成分的浆料制成的不可燃片材构成， 和无机涂层剂层。

公开(公告)号：US6113843A

公开(公告)日：2000-09-05

申请号：US274931

申请日：1999-03-23

申请人： Takuya Aoki ,  Taku Murase ,  Kazuhiro Takakura ,  Jun Sawai ,  Naoyoshi Sato

发明人： Takuya Aoki ,  Taku Murase ,  Kazuhiro Takakura ,  Jun Sawai ,  Naoyoshi Sato

IPC分类号： C01G49/00 ,  C04B35/26 ,  C04B35/38 ,  H01F1/34 ,  H01J29/76

CPC分类号： H01J29/76 ,  C04B35/2625 ,  H01F1/344 ,  H01J2229/7031

摘要： The process for the preparation of an oxide magnetic compact of the invention comprises:a step of preparing a mixed material which comprises 44 to 50 mole % of iron calculated as Fe.sub.2 O.sub.3, 0.1 to 8 mole % of manganese calculated as Mn.sub.2 O.sub.3, with the sum of iron and manganese being 50 to 54 mole % calculated as Fe.sub.2 O.sub.3 and Mn.sub.2 O.sub.3, 20 to 38 mole % of magnesium calculated as MgO, 17 to 22 mole % of zinc calculated as ZnO and not more than 5 mole % of copper calculated as CuO, anda step of molding the aforesaid mixed material to a predetermined shape and then firing it in an atmosphere of low oxygen concentration of 2.5 to 12% by volume. Therefore, there appears an extremely excellent effect that the oxide magnetic compact having excellent electromagnetic properties can be obtained at low cost.

摘要翻译： 制备本发明的氧化物磁性压块的方法包括：制备混合材料的步骤，该混合材料包含以Fe 2 O 3计为44〜50摩尔％的铁，以Mn 2 O 3计为0.1〜8摩尔％的锰， 按Mn计算的铁和锰为50〜54摩尔％，以MgO计为20〜38摩尔％的镁，以ZnO计为17〜22摩尔％的锌，以CuO计为5摩尔％以下的铜， 将上述混合材料成型为规定形状，然后在低氧浓度为2.5〜12体积％的气氛中烧成的工序。 因此，可以以低成本获得具有优异的电磁特性的氧化物磁性粉末的极好的效果。