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31 条记录 (耗时 0.037 秒)

    Piezoelectric Ceramics and Piezoelectric Element
    23.
    发明申请
    Piezoelectric Ceramics and Piezoelectric Element 审中-公开
    压电陶瓷和压电元件

    公开(公告)号：US20070257228A1

    公开(公告)日：2007-11-08

    申请号：US10581277

    申请日：2004-12-03

    申请人： Takeo Tsukada ,  Tomohisa Azuma ,  Masakazu Hirose ,  Hitoshi Oka

    发明人： Takeo Tsukada ,  Tomohisa Azuma ,  Masakazu Hirose ,  Hitoshi Oka

    IPC分类号： H01L41/083

    CPC分类号： C04B35/475 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3224 ,  C04B2235/3227 ,  H01L41/187

    摘要： A piezoelectric ceramics having ceramic particles, wherein said ceramic particles comprises bismuth layer compound containing at least Sr, Ln (note that Ln is a lanthanoid element), Bi, Ti and O and including MIIBi4Ti4O15 type crystal (MII is an element composed of Sr and Ln) as a main component, and an oxide of Mn as a subcomponent; and an average particle diameter by the code length measuring method is 0.8 to 4.7 μm: by which it is possible to provide piezoelectric ceramics having a large Qmax in a third harmonic mode of thickness vertical vibration in a relatively high frequency band (for example, 16 to 65 MHz), a resonator an other piezoelectric element comprising the piezoelectric ceramics as a piezoelectric substance thereof.

    摘要翻译： 一种具有陶瓷颗粒的压电陶瓷，其中所述陶瓷颗粒包括至少含有Sr，Ln的铋层化合物（注意Ln是镧系元素），Bi，Ti和O，并且包括M II > 4 15 15 类型晶体（M II）是由Sr和Ln组成的元素作为主要成分， 和Mn的氧化物作为副成分; 并且通过代码长度测量方法的平均粒径为0.8至4.7μm：通过该压电陶瓷可以在相对的厚度垂直振动的三次谐波模式中提供具有大Q最大值的压电陶瓷 高频带（例如，16至65MHz），谐振器和包括作为其压电体的压电陶瓷的其它压电元件。

    Ferromagnetic powder for dust cores, dust core, and dust core fabrication process
    24.
    发明授权
    Ferromagnetic powder for dust cores, dust core, and dust core fabrication process 失效
    铁芯粉尘，防尘芯，防尘芯制造工艺

    公开(公告)号：US6149704A

    公开(公告)日：2000-11-21

    申请号：US362709

    申请日：1999-07-29

    申请人： Hideharu Moro ,  Takeo Tsukada ,  Katsuhiko Wakayama

    发明人： Hideharu Moro ,  Takeo Tsukada ,  Katsuhiko Wakayama

    IPC分类号： H01F1/22 ,  H01F1/06 ,  H01F1/26 ,  H01F41/02 ,  B22F3/02

    CPC分类号： H01F41/0246 ,  H01F1/26

    摘要： A dust core ferromagnetic powder comprises a ferromagnetic metal powder, an insulating material, and a lubricant. The insulating material comprises a phenol resin and/or a silicone resin, and the lubricant comprises at least one compound selected from the group consisting of magnesium stearate, calcium stearate, strontium stearate, and barium stearate. It is possible to achieve a dust core having high saturation magnetic flux density, low losses, and satisfactory permeability with its dependence on frequency being improved.

    摘要翻译： 粉尘铁心铁磁粉末包含铁磁金属粉末，绝缘材料和润滑剂。 绝缘材料包括酚醛树脂和/或有机硅树脂，润滑剂包括选自硬脂酸镁，硬脂酸钙，硬脂酸锶和硬脂酸钡中的至少一种化合物。 可以实现具有高的饱和磁通密度，低损耗和令人满意的磁导率的压粉磁芯，其依赖于频率得到改善。

    Dust core, iron powder therefor and method of making
    26.
    发明授权
    Dust core, iron powder therefor and method of making 失效
    粉芯，铁粉及其制作方法

    公开(公告)号：US5800636A

    公开(公告)日：1998-09-01

    申请号：US779240

    申请日：1997-01-03

    申请人： Takeo Tsukada ,  Masaaki Kanasugi ,  Masataka Miyashita ,  Kazuhiro Okada ,  Norishige Yamaguchi

    发明人： Takeo Tsukada ,  Masaaki Kanasugi ,  Masataka Miyashita ,  Kazuhiro Okada ,  Norishige Yamaguchi

    IPC分类号： B22F1/00 ,  C22C33/02 ,  H01F1/20 ,  H01F1/24 ,  H01F27/255 ,  H01F41/02 ,  H01F1/22

    CPC分类号： H01F41/0246 ,  H01F1/24

    摘要： A dust core is prepared from an iron powder with a particle size of 75-200 .mu.m having added thereto 0.015-0.15 wt % of silica sol, 0.05-0.5 wt % of a silicone resin, and 10-50 wt % based on the silicone resin of an organic titanium compound. By subjecting the iron powder to a curing treatment at 50.degree.-250.degree. C., compacting the powder, and annealing in an inert atmosphere at 550.degree.-650.degree. C., there is obtained a dust core consisting essentially of iron powder particles with a particle size of 75-200 .mu.m, 0.03-0.1% by weight of Si, 15-210 ppm of Ti, and 300-2,500 ppm of oxygen.

    摘要翻译： 粉末核心由粒径为75〜200μm的铁粉制成，添加了0.015〜0.15重量％的硅溶胶，0.05〜0.5重量％的有机硅树脂，10〜50重量％ 有机钛化合物的有机硅树脂。 通过使铁粉在50-250℃下进行固化处理，压实粉末，并在550-650℃的惰性气氛中进行退火，得到一个主要由铁粉末和 粒径为75-200μm，Si 0.03-0.1重量％，Ti为15-210ppm，氧为300-2,500ppm。