公开(公告)号：US06432325B1

公开(公告)日：2002-08-13

申请号：US09517578

申请日：2000-03-02

申请人： Munemitsu Hamada ,  Akira Takeishi ,  Makoto Takahashi ,  Dai Matsuoka ,  Masatada Yodogawa ,  Hiraku Harada

发明人： Munemitsu Hamada ,  Akira Takeishi ,  Makoto Takahashi ,  Dai Matsuoka ,  Masatada Yodogawa ,  Hiraku Harada

IPC分类号： H01B108

CPC分类号： H01J61/0677 ,  H01J1/142 ,  H01J61/0737 ,  H01J2223/04

摘要： An electron-emitting electrode for discharge lamps etc. uses an electron-emitting material which contains a first metal component selected from Ba, Sr and Ca and a second metal component selected from Ta, Zr, Nb, Ti and Hf and also contains oxynitride perovskite. The electron-emitting material has restrained evaporation during electric discharge and a high resistance to ion sputtering.

摘要翻译： 用于放电灯的电子发射电极等使用含有选自Ba，Sr和Ca的第一金属成分的电子发射材料和选自Ta，Zr，Nb，Ti和Hf的第二金属成分，并且还含有氮氧化物钙钛矿 。 电子发射材料在放电期间已经抑制了蒸发，并且具有高的抗离子溅射性。

公开(公告)号：US06218928B1

公开(公告)日：2001-04-17

申请号：US09068337

申请日：1998-05-08

申请人： Masuo Okada ,  Takahiro Sawaguchi ,  Masatada Yodogawa ,  Dai Matsuoka

发明人： Masuo Okada ,  Takahiro Sawaguchi ,  Masatada Yodogawa ,  Dai Matsuoka

IPC分类号： H01C710

CPC分类号： C04B35/475 ,  C01G29/00 ,  C01G29/006 ,  C01P2002/54 ,  C01P2006/40 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3251 ,  C04B2235/3294 ,  C22C29/04 ,  C22C29/12 ,  C22C29/16 ,  H01C7/022 ,  H01C7/023 ,  H01C17/06553

摘要： The PTC thermistor material of the invention comprises a matrix phase and electrically conductive phases substantially uniformly dispersed in the matrix phase, said conductive phases having a resistivity lower than that of the matrix phase, and has a resistivity changing sharply in the vicinity of the melting point of the conductive phases. The matrix phase is made up of any one of a polycrystalline ceramic material, a glass-polycrystalline ceramic composite material, a glass, a crystallized glass, and a polymer material, and the conductive phases are made up of a metal containing bismuth as a main component. It is thus possible to achieve a PTC thermistor material which can be controlled in terms of various properties such as the temperature at which PTCR property becomes available and the rate of resistivity change and so can be applied to circuit parts through which large currents pass in a normal operation state. Further, the PTC thermistor material can be easily manufactured with the stable PTCR property maintained. Furthermore, the PTC thermistor material can be operated with an increased rated current albeit being of small size, and has a high degree of shape freedom.

摘要翻译： 本发明的PTC热敏电阻材料包括基体相和基本均匀分散在基体相中的导电相，所述导电相的电阻率低于基体相的电阻率，并且在熔点附近具有电阻率的急剧变化 的导电相。 基体相由多晶陶瓷材料，玻璃 - 多晶陶瓷复合材料，玻璃，结晶玻璃和聚合物材料中的任何一种构成，并且导电相由含有铋作为主体的金属构成 零件。 因此，可以实现一种PTC热敏电阻材料，其可以根据PTCR性质变得可用的温度和电阻率变化的温度等各种性质来控制，并且可以应用于大电流通过的电路部件 正常运行状态。 此外，可以容易地制造PTC热敏电阻材料，其保持稳定的PTCR性能。 此外，PTC热敏电阻材料可以以增加的额定电流工作，尽管尺寸小，并且具有高的形状自由度。

公开(公告)号：US5707583A

公开(公告)日：1998-01-13

申请号：US444578

申请日：1995-05-19

申请人： Masatada Yodogawa

发明人： Masatada Yodogawa

IPC分类号： C04B35/453 ,  C04B35/64 ,  H01C7/10 ,  H01C7/112 ,  C04B33/32

CPC分类号： H01C7/112 ,  C04B35/453

摘要： In preparing a zinc oxide base varistor in the form of a sintered body which itself has a voltage-dependent nonlinear resistance, firing is done in an atmosphere containing at least 60% of oxygen at or above the temperature at which additives form a liquid phase, and thereafter the sintered body is heat treated in an atmosphere containing at least 10% of oxygen at a temperature of 600.degree. to 1,000.degree. C. There is obtained a zinc oxide base varistor having a high energy handling capability, a high nonlinearity index .alpha., and satisfactory load life characteristics such as a humid load life.

摘要翻译： 在制备本身具有电压依赖性非线性电阻的烧结体形式的氧化锌基变阻器的情况下，在含有至少60％的氧气的气氛中进行烧成，其中添加剂形成液相的温度以上， 然后在600〜1000℃的温度下，在含有至少10％的氧的气氛中对烧结体进行热处理。得到具有高能量处理能力的氧化锌基压敏电阻，高非线性指数α， 和令人满意的负载寿命特性，如潮湿负载寿命。

公开(公告)号：US4306214A

公开(公告)日：1981-12-15

申请号：US64807

申请日：1979-08-08

申请人： Susumu Miyabayashi ,  Masatada Yodogawa

发明人： Susumu Miyabayashi ,  Masatada Yodogawa

IPC分类号： H01C7/115 ,  H01C7/10 ,  C04B35/46 ,  H01B1/08

CPC分类号： H01C7/115

摘要： A novel non-linear resistance element or a varistor element is proposed which is a sintered body composed of a ternary oxide mixture comprising titanium dioxide as the base component, bismuth oxide and a third oxide component selected from the group consisting of oxides of tantalum, niobium and antimony admixed in limited proportions. The sintered body is prepared by subjecting the powder mixture obtained by admixing a solution containing tantalum, niobium or antimony with titanium dioxide and bismuth oxide to sintering following drying and calcination. The varistor element of the invention is stable in its performance and has a sufficiently high non-linearity index so that excellent noise suppressors are prepared with the varistor element to be useful in absorbing the noise voltages generated in various rotatory machines such as miniature motors.Further improvement in the above varistor element is proposed by adding a small amount of silicon dioxide to the ternary oxide mixtures.

摘要翻译： 提出了一种新型的非线性电阻元件或变阻器元件，其是由以二氧化钛为基体的三元氧化物混合物构成的烧结体，氧化铋和选自钽，铌的氧化物的第三氧化物成分 和锑以有限的比例混合。 通过将通过将含有钽，铌或锑的溶液与二氧化钛和氧化铋混合得到的粉末混合物进行干燥和煅烧来烧结来制备烧结体。 本发明的变阻器元件的性能稳定，具有足够高的非线性指数，因此可以利用变阻器元件制造出优异的噪声抑制器，以用于吸收微型电动机等各种旋转机械产生的噪声电压。 通过向三元氧化物混合物中加入少量二氧化硅来提出上述变阻器元件的进一步改进。