公开(公告)号：US4116752A

公开(公告)日：1978-09-26

申请号：US472740

申请日：1974-05-23

申请人： Seiji Matsumoto ,  Kiyoshi Fukai

发明人： Seiji Matsumoto ,  Kiyoshi Fukai

IPC分类号： C01G49/00 ,  C30B9/00 ,  H01F1/11 ,  B01J17/06 ,  C01F11/00 ,  C01G49/02

CPC分类号： C30B29/22 ,  C30B9/00

摘要： Single crystalline, ferrite particles are obtained by the thermal reaction of ferric oxyhydroxide, ferric hydroxide, porous ferric oxide made therefrom or ferric oxide having a particle size less than 0.8.mu. with a strontium or barium compound such as the oxide, hydroxide, the carbonate or the carboxylate in the presence of a small amount of a metal chloride flux such as strontium chloride or barium chloride.The resulting particles have a well-defined, hexagonal plate configuration and are particularly adapted for the production of anisotropic magnets.

摘要翻译： 通过热氧化氢氧化物，氢氧化铁，由其制成的多孔氧化铁或粒度小于0.8μm的氧化铁与锶或钡化合物如氧化物，氢氧化物，碳酸盐或碳酸氢盐的热反应获得单晶铁素体颗粒。 羧酸盐在少量金属氯化物助熔剂如氯化锶或氯化钡的存在下进行。

公开(公告)号：US4414196A

公开(公告)日：1983-11-08

申请号：US322666

申请日：1981-11-18

申请人： Seiji Matsumoto ,  Tadashi Koga ,  Kiyoshi Fukai ,  Hideji Yamamoto

发明人： Seiji Matsumoto ,  Tadashi Koga ,  Kiyoshi Fukai ,  Hideji Yamamoto

IPC分类号： C01G49/06 ,  C30B7/00 ,  G11B5/706 ,  H01F1/11

CPC分类号： G11B5/70642 ,  C01G49/06 ,  C30B29/16 ,  C30B29/62 ,  C30B7/00 ,  C01P2004/10 ,  C01P2004/51 ,  C01P2004/62

摘要： A method of producing single crystalline, acicular .alpha.-ferric oxide particles of narrow particle size distribution is provided. The method comprises heating an aqueous suspension of ferric hydroxide at temperatures of 100.degree.-250.degree. C. at an alkaline pH in the presence both a water soluble organic or inorganic compound capable of forming complexes with iron as a growth regulating agent and .alpha.-ferric oxide seed crystals of minor axes not larger than 0.4 microns in average in amounts of 0.1-25 mole % in terms of the Fe content thereof in relation to the ferric hydroxide.

摘要翻译： 提供了一种制备窄粒度分布的单晶，针状α-氧化铁颗粒的方法。 该方法包括在碱性pH下在100-250℃的温度下加热氢氧化铁的水性悬浮液，同时存在能够与铁形成络合物的水溶性有机或无机化合物作为生长调节剂和α铁 平均相对于氢氧化铁的Fe含量为0.1〜25摩尔％的小于0.4微米的短轴的氧化物晶种。

公开(公告)号：US06197273B1

公开(公告)日：2001-03-06

申请号：US09463021

申请日：2000-03-22

申请人： Kazuhiko Nagano ,  Kazunobu Abe ,  Shigefumi Kamisaka ,  Kiyoshi Fukai ,  Tsutomu Hatanaka ,  Shinji Ohgama ,  Hiroshi Nakao ,  Minoru Yoneda ,  Hideto Mizutani

发明人： Kazuhiko Nagano ,  Kazunobu Abe ,  Shigefumi Kamisaka ,  Kiyoshi Fukai ,  Tsutomu Hatanaka ,  Shinji Ohgama ,  Hiroshi Nakao ,  Minoru Yoneda ,  Hideto Mizutani

IPC分类号： C01B3124

CPC分类号： C01G53/06 ,  B01J23/70 ,  B01J37/00 ,  B22F9/026 ,  C01B13/328 ,  C01G3/00 ,  C01G3/02 ,  C01G51/04 ,  C01G51/06 ,  C01G53/04 ,  C01P2002/02 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62

摘要： The invention provides a process for production of fine spherical particles of a carbonate or a hydroxide of nickel, cobalt or copper which comprises: dissolving a carbonate or a hydroxide of nickel, cobalt or copper having the general formula (I) M(CO3)x/2.(OH)y wherein M represents Ni, Co or Cu, and x and y are numerals satisfying the followings: 0≦x≦2, 0≦y≦2 and x+y=2, in aqueous ammonia, converting the resulting solution to a W/O emulsion containing droplets of the solution in a non-aqueous medium, and then removing volatile components including ammonia from within the droplets, thereby precipitating a basic carbonate or a hydroxide of a metal selected from nickel, cobalt and copperin the droplets. The fine spherical particles of a carbonate or a hydroxide of nickel, cobalt or copper obtained according to the process of the invention are especially useful as a precursor for the manufacture of uniform, fine spherical particles of nickel, copper or cobalt metal, as well as useful as themselves as a catalyst for use in organic synthesis, a carrier, a pigment, a filler or a glaze.

摘要翻译： 本发明提供一种生产镍，钴或铜的碳酸盐或氢氧化物的细球形颗粒的方法，其包括：将通式（I）的其中M表示Ni的镍，钴或铜的碳酸盐或氢氧化物溶解， Co或Cu，x和y是在氨水中将满足以下条件的数字：0 <= x <= 2,0 <= y <= 2和x + y = 2，将所得溶液转化成W / O乳液 在非水介质中含有溶液的液滴，然后从液滴内除去包括氨的挥发性组分，从而沉淀出液滴中选自镍，钴和铜的金属的碱性碳酸盐或氢氧化物。微球形颗粒 根据本发明的方法获得的镍，钴或铜的碳酸盐或氢氧化物特别可用作制造镍，铜或钴金属的均匀的细小球形颗粒的前体，并且作为其自身可用作 用于有机合成的催化剂，载体，颜料，填料或釉料。

公开(公告)号：US5507898A

公开(公告)日：1996-04-16

申请号：US313924

申请日：1994-09-26

申请人： Masashi Aoki ,  Kiyoshi Fukai ,  Kazunobu Abe ,  Koichiro Sakata ,  Tadashi Takenaka

发明人： Masashi Aoki ,  Kiyoshi Fukai ,  Kazunobu Abe ,  Koichiro Sakata ,  Tadashi Takenaka

IPC分类号： H01L41/39 ,  B32B31/04 ,  B32B31/20

CPC分类号： H01L41/1876 ,  H01L41/43

摘要： A multilayer piezoelectric composite comprising a bonded laminate each layer of which is composed of a green sheet of a low-temperature sintering lead zirconate titanate piezoelectric ceramic. The temperature coefficient of a frequency constant of at least one layer has a polarity opposite to the polarity of those of the other layers. The bonded laminate is sintered at a temperature which does not produce any or almost any interdiffusion between layers so that the absolute value of the temperature coefficient of a frequency constant of the bonded laminate is smaller than the absolute value of the temperature coefficient of a frequency constant of any or one of the layers.

摘要翻译： 1.一种多层压电复合体，其特征在于，具有接合层叠体，其各层由低温烧结铅酸锆酸铅压电陶瓷的生片构成。 至少一层的频率常数的温度系数具有与其它层的极性相反的极性。 接合层叠体在层间不产生或几乎相互扩散的温度下进行烧结，使得接合层叠体的频率常数的温度系数的绝对值小于频率常数的温度系数的绝对值 的任何一层或一层。

公开(公告)号：US4202871A

公开(公告)日：1980-05-13

申请号：US957861

申请日：1978-11-06

申请人： Seiji Matsumoto ,  Tadashi Koga ,  Kiyoshi Fukai ,  Shinya Nakatani

发明人： Seiji Matsumoto ,  Tadashi Koga ,  Kiyoshi Fukai ,  Shinya Nakatani

IPC分类号： C01G49/06 ,  G11B5/706 ,  B01J17/04 ,  C01G49/08

CPC分类号： B82Y30/00 ,  C01G49/06 ,  G11B5/70663 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/42

摘要： Single crystalline, acicular ferric oxide particles are produced by maintaining an aqueous suspension of ferric hydroxide at an elevated temperature at an alkaline pH in the presence of an organic phosphonic acid compound or a hydroxycarboxylic acid compound as a growth-regulating agent.

摘要翻译： 通过在有机膦酸化合物或羟基羧酸化合物作为生长调节剂的存在下，在碱性pH下，在高温下保持氢氧化铁的水悬浮液来制备单晶针状氧化铁颗粒。

公开(公告)号：US4042516A

公开(公告)日：1977-08-16

申请号：US633085

申请日：1975-11-18

申请人： Seiji Matsumoto ,  Kiyoshi Fukai

发明人： Seiji Matsumoto ,  Kiyoshi Fukai

IPC分类号： C04B35/26 ,  H01F1/113 ,  H01F1/117

CPC分类号： C04B35/2683 ,  H01F1/113 ,  H01F1/117

摘要： Single crystalline ferrite particles are obtained by the thermal reaction of ferric oxyhydroxide, ferric hydroxide, porous ferric oxide made therefrom or ferric oxide having a particle size less than 0.8.mu. with a strontium or barium compound such as the oxide hydroxide, the carbonate or the carboxylate in the presence of a small amount of a metal chloride flux such as strontium chloride or barium chloride.The resulting particles have a well-defined, hexagonal plate configuration and are particularly adapted for the production of anisotropic magnets.

摘要翻译： 通过热氧化氢氧化铁，氢氧化铁，由其制成的多孔氧化铁或粒度小于0.8μm的氧化铁与锶或钡化合物如氢氧化物，碳酸盐或羧酸盐的热反应获得单晶铁素体颗粒。 在少量金属氯化物助熔剂如氯化锶或氯化钡存在下进行。

公开(公告)号：US06592645B1

公开(公告)日：2003-07-15

申请号：US09889490

申请日：2001-07-18

申请人： Hideto Mizutani ,  Minoru Yoneda ,  Toshihiro Sugaya ,  Hiroyoshi Urasumi ,  Chiyo Honda ,  Hiroshi Nakao ,  Tsutomu Hatanaka ,  Shinji Ohgama ,  Kiyoshi Fukai ,  Kazuhiko Nagano ,  Shigefumi Kamisaka ,  Kazunobu Abe

发明人： Hideto Mizutani ,  Minoru Yoneda ,  Toshihiro Sugaya ,  Hiroyoshi Urasumi ,  Chiyo Honda ,  Hiroshi Nakao ,  Tsutomu Hatanaka ,  Shinji Ohgama ,  Kiyoshi Fukai ,  Kazuhiko Nagano ,  Shigefumi Kamisaka ,  Kazunobu Abe

IPC分类号： B22F918

CPC分类号： H01G4/008 ,  B22F9/22 ,  B22F2998/10 ,  B22F2999/00 ,  B22F9/026

摘要： A process for the production of fine powder of metallic nickel which comprises a first step of dissolving nickel carbonate and/or nickel hydroxide in aqueous ammonia or in an aqueous solution of ammonia and at least one selected from the group consisting of ammonium carbonate, ammonium hydrogencarbonate, a carbonate of an alkali metal and a hydrogencarbonate of an alkali metal to prepare an aqueous solution of a nickel salt; converting the aqueous solution of a nickel salt to a W/O emulsion, and then removing volatile components including ammonia from the droplets to form precipitates of nickel carbonate in the droplets, thereby providing fine spherical particles of nickel carbonate; and a second step of heating the particles of nickel carbonate in the presence of a fusion preventive agent that is a compound of at least one element selected from the group consisting of alkaline earth elements, aluminum, silicon and rare earth elements in an atmosphere of hydrogen, thereby reducing the nickel carbonate to metallic nickel.

摘要翻译： 一种制造金属镍微细粉末的方法，该方法包括将碳酸镍和/或氢氧化镍溶解在氨水或氨水溶液中的至少一种和碳酸铵，碳酸氢铵 ，碱金属的碳酸盐和碱金属的碳酸氢盐以制备镍盐水溶液; 将镍盐水溶液转化成W / O乳液，然后从液滴中除去包括氨在内的挥发性成分，从而在液滴中形成碳酸镍的沉淀物，由此提供细小的碳酸镍球形颗粒; 在第二步骤中，在氢气气氛中，在选自碱土元素，铝，硅和稀土元素中的至少一种元素的化合物的熔融预防剂存在下，加热碳酸镍颗粒 ，从而将碳酸镍还原为金属镍。