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    SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
    6.
    发明申请
    SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR 有权
    半导体陶瓷和积极温度系数热敏电阻

    公开(公告)号：US20110234364A1

    公开(公告)日：2011-09-29

    申请号：US13154601

    申请日：2011-06-07

    申请人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    发明人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    IPC分类号： H01C7/02 ,  H01B1/02

    CPC分类号： H01C7/025 ,  C04B35/46 ,  C04B35/4682 ,  C04B2235/3201 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3262 ,  C04B2235/3298 ,  C04B2235/6584 ,  C04B2235/79

    摘要： A semiconductor ceramic includes a BamTiO3-based composition, as a main component, having a perovskite structure represented by general formula AmBO3, wherein part of Ba constituting the A site is replaced with Na, Bi, Ca, and a rare-earth element having an ionic radius smaller than that of the Na; the content of the rare-earth element when the total number of moles of the elements constituting the A site is 1 mole is 0.0005 to 0.015 on a molar basis; and the content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 or more and 0.175 or less) on a molar basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, high reliability is achieved even if an alkali metal element is present.

    摘要翻译： 半导体陶瓷包括作为主要成分的作为主要成分的具有由通式AmBO 3表示的钙钛矿结构的基于BamTiO 3的组合物，其中构成A位的Ba的一部分被Na，Bi，Ca和具有 离子半径小于Na; 当构成A位点的元素的总摩尔数为1摩尔时，稀土元素的含量为摩尔计为0.0005〜0.015。 当构成A位点的元素的总摩尔数为1摩尔时，Ca的含量为摩尔为0.05〜0.20（优选为0.125以上且0.175以下）。 PTC热敏电阻包括由半导体陶瓷形成的部件主体1。 因此，即使存在碱金属元素，也可实现高的可靠性。

    Semiconductor ceramic and positive temperature coefficient thermistor
    8.
    发明授权
    Semiconductor ceramic and positive temperature coefficient thermistor 有权
    半导体陶瓷和正温度系数热敏电阻

    公开(公告)号：US08350662B2

    公开(公告)日：2013-01-08

    申请号：US13154601

    申请日：2011-06-07

    申请人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    发明人： Naoaki Abe ,  Hayato Katsu ,  Masato Goto ,  Atsushi Kishimoto ,  Akinori Nakayama

    IPC分类号： H01C7/10

    CPC分类号： H01C7/025 ,  C04B35/46 ,  C04B35/4682 ,  C04B2235/3201 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3262 ,  C04B2235/3298 ,  C04B2235/6584 ,  C04B2235/79

    摘要： A semiconductor ceramic includes a BamTiO3-based composition, as a main component, having a perovskite structure represented by general formula AmBO3, wherein part of Ba constituting the A site is replaced with Na, Bi, Ca, and a rare-earth element having an ionic radius smaller than that of the Na; the content of the rare-earth element when the total number of moles of the elements constituting the A site is 1 mole is 0.0005 to 0.015 on a molar basis; and the content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 or more and 0.175 or less) on a molar basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, high reliability is achieved even if an alkali metal element is present.

    摘要翻译： 半导体陶瓷包括作为主要成分的作为主要成分的具有由通式AmBO 3表示的钙钛矿结构的基于BamTiO 3的组合物，其中构成A位点的Ba的一部分被Na，Bi，Ca和具有 离子半径小于Na; 当构成A位点的元素的总摩尔数为1摩尔时，稀土元素的含量为摩尔计为0.0005〜0.015。 当构成A位点的元素的总摩尔数为1摩尔时，Ca的含量为摩尔为0.05〜0.20（优选为0.125以上且0.175以下）。 PTC热敏电阻包括由半导体陶瓷形成的部件主体1。 因此，即使存在碱金属元素，也可实现高的可靠性。

    Semiconductor ceramic material
    9.
    发明授权
    Semiconductor ceramic material 有权
    半导体陶瓷材料

    公开(公告)号：US08093170B2

    公开(公告)日：2012-01-10

    申请号：US12636372

    申请日：2009-12-11

    申请人： Hayato Katsu

    发明人： Hayato Katsu

    IPC分类号： C04B35/00

    CPC分类号： H01C7/025 ,  C04B35/46 ,  C04B35/4682 ,  C04B2235/3201 ,  C04B2235/3208 ,  C04B2235/3224 ,  C04B2235/3227 ,  C04B2235/3262 ,  C04B2235/3263 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/604 ,  C04B2235/658 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/85

    摘要： A semiconductor ceramic material which contains no Pb and has a high Curie point, low resistivity, and PTC characteristics is represented by the formula ABO3 wherein A includes Ba, Ca, an alkali metal element, Bi, and a rare-earth element, and B includes Ti. The semiconductor ceramic material contains 5 to 20 molar parts and preferably 12.5 to 17.5 molar parts of Ca per 100 molar parts of Ti. The ratio of the content of the alkali metal element to the sum of the content of the bismuth plus the content of the rare earth element, is preferably from 1.00 to 1.06. The semiconductor ceramic material preferably further contains 0.01 to 0.2 molar parts of Mn per 100 molar parts of Ti.

    摘要翻译： 不含Pb且具有高居里点，低电阻率和PTC特性的半导体陶瓷材料由式ABO3表示，其中A包括Ba，Ca，碱金属元素Bi和稀土元素，B 包括Ti。 半导体陶瓷材料每100摩尔份Ti含有5至20摩尔份，优选12.5至17.5摩尔份的Ca。 碱金属元素的含量与铋的含量与稀土元素的含量之和的比例优选为1.00〜1.06。 半导体陶瓷材料优选每100摩尔份Ti还含有0.01〜0.2摩尔份的Mn。

    BARIUM TITANATE-BASED SEMICONDUCTOR PORCELAIN COMPOSITION AND PTC ELEMENT INCLUDING THE SAME
    10.
    发明申请
    BARIUM TITANATE-BASED SEMICONDUCTOR PORCELAIN COMPOSITION AND PTC ELEMENT INCLUDING THE SAME 有权
    基于钛酸钡的半导体陶瓷组合物和包括其的PTC元件

    公开(公告)号：US20090201121A1

    公开(公告)日：2009-08-13

    申请号：US12413254

    申请日：2009-03-27

    申请人： Hayato Katsu ,  Kenjirou Mihara ,  Hideaki Niimi

    发明人： Hayato Katsu ,  Kenjirou Mihara ,  Hideaki Niimi

    IPC分类号： H01C7/10 ,  C04B35/468

    CPC分类号： H01C7/025 ,  C04B35/4682 ,  C04B2235/3201 ,  C04B2235/3224 ,  C04B2235/3227 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/652 ,  C04B2235/6584 ,  C04B2235/79 ,  C04B2235/85 ,  Y10T428/2993

    摘要： A barium titanate-based semiconductor ceramic composition and a PTC element that have a high Curie temperature and a low electrical resistivity at room temperature and that exhibit a desired rate of change in resistance are provided. The barium titanate-based semiconductor ceramic composition is a ceramic composition having a perovskite structure containing at least barium and titanium, wherein some of the barium is replaced with an alkali metal element, bismuth, and a rare earth element, and when the content of the titanium is assumed to be 100 parts by mole, a ratio of the content of the alkali metal element to the content of the bismuth plus the content of the rare earth element represented by parts by mole, is 1.00 or more and 1.06 or less. A PTC thermistor includes a ceramic body composed of the barium titanate-based semiconductor ceramic composition having the above feature and electrodes disposed on both side faces of the ceramic body.

    摘要翻译： 提供了一种钛酸钡系半导体陶瓷组合物和PTC元件，其在室温下具有高居里温度和低电阻率并且具有期望的电阻变化率。 钛酸钡类半导体陶瓷组合物是具有至少包含钡和钛的钙钛矿结构的陶瓷组合物，其中一些钡被碱金属元素，铋和稀土元素代替，并且当 假定钛为100份摩尔，碱金属元素的含量与铋的含量加上以摩尔比表示的稀土元素的含量的比为1.00以上且1.06以下。 PTC热敏电阻包括由具有上述特征的钛酸钡系半导体陶瓷组合物和设置在陶瓷体的两侧面的电极构成的陶瓷体。