公开(公告)号：US6143238A

公开(公告)日：2000-11-07

申请号：US239685

申请日：1999-01-29

申请人： Masahiro Konishi ,  Shindo Watanabe

发明人： Masahiro Konishi ,  Shindo Watanabe

IPC分类号： C04B35/58 ,  C04B35/64 ,  C04B37/00 ,  F23Q7/00 ,  H05B3/14 ,  H05B3/18 ,  H05B3/48 ,  C04B33/32

CPC分类号： H05B3/48 ,  B32B18/00 ,  C04B35/581 ,  C04B35/593 ,  F23Q7/001 ,  H05B3/141 ,  C04B2235/3224 ,  C04B2235/3891 ,  C04B2235/5445 ,  C04B2235/6022 ,  C04B2235/6562 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/6584 ,  C04B2235/721 ,  C04B2235/80 ,  C04B2237/368 ,  C04B2237/66 ,  C04B2237/76 ,  C04B2237/765 ,  C04B2237/84 ,  F23Q2007/004 ,  H05B2203/018 ,  H05B2203/027

摘要： Ceramic raw powder containing conductive ceramic powder is mixed with a prescribed quantity of a molding assistant containing carbon component. This mixture is molded into a prescribed shape of a resistive heating element to thereby produce a heating element mold. A composite mold is prepared by embedding the heating element mold into molds of a ceramic substrate. The composite mold is sintered at a sintering temperature of 1700.degree. C. or higher. During a process of rising temperature to the sintering temperature, the composite mold is kept in an oxygen containing atmosphere having an oxygen partial pressure of 2.times.10.sup.-4 to 1.0 Torr for 7 minutes or longer at a temperature of 1200.degree. C. or higher.

摘要翻译： 将含有导电性陶瓷粉末的陶瓷原料粉末与规定量的含有碳成分的成型助剂混合。 将该混合物成型为电阻加热元件的规定形状，从而制造加热元件模具。 通过将加热元件模具嵌入到陶瓷基板的模具中来制备复合模具。 复合模具在1700℃以上的烧结温度下进行烧结。 在升温至烧结温度的过程中，将复合模具在1200℃或更高的温度下保持在氧分压为2×10 -4至1.0托的含氧气氛中7分钟或更长时间。

公开(公告)号：US06599457B2

公开(公告)日：2003-07-29

申请号：US10021204

申请日：2001-12-07

申请人： Shindo Watanabe ,  Masahiro Konishi

发明人： Shindo Watanabe ,  Masahiro Konishi

IPC分类号： C04B3332

CPC分类号： H05B3/148 ,  C04B35/593 ,  C04B35/597 ,  F23Q7/001 ,  F23Q2007/004 ,  H05B3/141 ,  H05B2203/027

摘要： In the production of a silicon nitride sintered body through a hot press method, a sintering aid protecting agent is added to the raw material. The employable protecting agents are metallic elements such as Ta, W and Mo and compounds of the metallic elements such as nitrides and silicides. Conversion of these elements and compounds to carbides occurs preferentially to reduction of the sintering aid. Thus, it becomes possible to suppress reduction of the sintering aid in a reducing atmosphere formed, for example, of carbon monoxide, which is generated particularly when a graphite pressing die is employed.

摘要翻译： 在通过热压法制造氮化硅烧结体时，向原料中添加烧结助剂保护剂。 可用的保护剂是诸如Ta，W和Mo的金属元素，以及诸如氮化物和硅化物的金属元素的化合物。 这些元素和化合物转化为碳化物优先发生烧结助剂的还原。 因此，可以抑制在例如使用石墨压模时产生的例如一氧化碳形成的还原气氛中的烧结助剂的还原。

公开(公告)号：US06359261B1

公开(公告)日：2002-03-19

申请号：US09696547

申请日：2000-10-25

申请人： Shindo Watanabe ,  Masahiro Konishi

发明人： Shindo Watanabe ,  Masahiro Konishi

IPC分类号： F23Q700

CPC分类号： H05B3/148 ,  C04B35/593 ,  C04B35/597 ,  F23Q7/001 ,  F23Q2007/004 ,  H05B3/141 ,  H05B2203/027

摘要： The invention comprehends a silicon nitride sintered body having consistent qualities, a process for producing the same, a ceramic heater employing the silicon nitride sintered body as a substrate and a glow plug containing the ceramic heater as a heat source. In the production of a silicon nitride sintered body through a hot press method, a sintering aid protecting agent is added to the raw material. The employable protecting agents are metallic elements such as Ta, W and Mo and compounds of the metallic elements such as nitrides and silicides. Conversion of these elements and compounds to carbides occurs preferentially to reduction of the sintering aid. Thus, it becomes possible to suppress reduction of the sintering aid in a reducing atmosphere formed, for example, of carbon monoxide, which is generated particularly when a graphite pressing die is employed. A ceramic heater which comprises a substrate formed from the silicon nitride sintered body and a resistance heater embedded in the substrate is obtained. Further, a glow plug containing the ceramic heater serving as a heat source is obtained.

公开(公告)号：US07020952B2

公开(公告)日：2006-04-04

申请号：US10304744

申请日：2002-11-27

申请人： Shindo Watanabe ,  Masahiro Konishi ,  Katsuhisa Yabuta

发明人： Shindo Watanabe ,  Masahiro Konishi ,  Katsuhisa Yabuta

IPC分类号： H01C17/02

CPC分类号： F23Q7/001 ,  F23Q2007/004 ,  Y10T29/49083 ,  Y10T29/49087 ,  Y10T29/49098 ,  Y10T29/49099 ,  Y10T29/49179 ,  Y10T29/5195

摘要： A green ceramic heater including a green heating resistor formed of an electrically conductive ceramic (e.g., silicide or carbide of a metal element such as W, Ta, or Nb) and an insulative ceramic (e.g., silicon nitride) and power supply leads (e.g., made of W), a first end of each power supply lead being connected to a corresponding end of the green heating resistor, the green heating resistor and the power supply leads buried in a green substrate formed of a material (e.g., silicon nitride) is fired, and subsequently, the resultant ceramic heater is heat-treated at 900 to 1,600° C., to thereby enhance flexural strength of the ceramic heater. The heat treatment is preferably carried out prior to forming a glass layer on an outer circumferential surface of the ceramic heater. When the heat treatment is performed after the fired ceramic heater has been polished so as to expose a second end of each power supply lead from a surface of the substrate, the heat treatment is preferably carried out in an inert atmosphere.

摘要翻译： 包括由导电陶瓷（例如，诸如W，Ta或Nb的金属元素的硅化物或碳化物）和绝缘陶瓷（例如，氮化硅）和电源引线（例如，氮化硅）形成的绿色加热电阻器的绿色陶瓷加热器。 由W制成），每个电源引线的第一端连接到绿色加热电阻器的对应端，绿色加热电阻器和埋入由材料（例如，氮化硅）形成的绿色衬底中的电源引线） 烧制后，将得到的陶瓷加热器在900〜1600℃进行热处理，从而提高陶瓷加热器的弯曲强度。 热处理优选在陶瓷加热器的外周面上形成玻璃层之前进行。 在烧结的陶瓷加热器被抛光之后进行热处理以从基板的表面露出每个电源引线的第二端时，优选在惰性气氛中进行热处理。

公开(公告)号：US06744016B2

公开(公告)日：2004-06-01

申请号：US09813689

申请日：2001-03-21

申请人： Shindo Watanabe ,  Masahiro Konishi

发明人： Shindo Watanabe ,  Masahiro Konishi

IPC分类号： F23Q700

CPC分类号： C04B41/009 ,  C04B41/5155 ,  F23Q7/001 ,  F23Q2007/004 ,  H05B3/141 ,  H05B3/148 ,  H05B2203/027 ,  C04B41/455 ,  C04B35/584

摘要： A ceramic heater includes a silicon nitride ceramic substrate and a heating member embedded in the silicon nitride ceramic substrate. An Al-thickened layer is formed in a surface layer portion of the silicon nitride ceramic substrate. The Al-thickened layer has an Al concentration higher than that of an internal layer portion of the silicon nitride ceramic substrate. The Al-thickened layer assumes such a graded composition structure that the Al concentration increases toward the surface of the silicon nitride ceramic substrate.

摘要翻译： 陶瓷加热器包括氮化硅陶瓷衬底和嵌入在氮化硅陶瓷衬底中的加热构件。 在氮化硅陶瓷基板的表层部分中形成Al增厚层。 Al增厚层的Al浓度高于氮化硅陶瓷衬底的内层部分的Al浓度。 Al增厚层采用这样的梯度组成结构，使得Al浓度朝向氮化硅陶瓷衬底的表面增加。

公开(公告)号：US06423944B1

公开(公告)日：2002-07-23

申请号：US09767860

申请日：2001-01-24

申请人： Shindo Watanabe ,  Masahiro Konishi

发明人： Shindo Watanabe ,  Masahiro Konishi

IPC分类号： F23Q700

摘要： A ceramic heater extending in an axial direction to have an elongate shape includes (a) a basal body; (b) a lead wire embedded in the basal body; and (c) a heating element embedded in the basal body. This heating element includes (1) a matrix ceramic phase; (2) conductive ceramic particles dispersed in the matrix ceramic phase; (3) a portion in which an end portion of the lead wire is embedded; and (4) a reference zone in terms of concentration of a particular element (e.g., rare-earth element). The heating element may include a condensed zone in terms of concentration of the particular element. The ceramic heater can be free from the condensed zone, or at least its formation is minimized to have a thickness of not greater than 5 &mgr;m. With this, the ceramic heater is improved in bending strength.

公开(公告)号：US10082293B2

公开(公告)日：2018-09-25

申请号：US13985221

申请日：2012-04-18

申请人： Kazuya Matsui ,  Shindo Watanabe

发明人： Kazuya Matsui ,  Shindo Watanabe

IPC分类号： F23Q7/22 ,  H05B3/00 ,  F23Q7/00 ,  H05B3/44 ,  H01C17/02

CPC分类号： F23Q7/001 ,  F23Q2007/004 ,  H01C17/02 ,  H05B3/44 ,  Y10T29/49083

摘要： A ceramic heater including a columnar substrate and a heat generation resistor embedded in the substrate. A taper surface (12) having a contour L1 extending along an imaginary ellipse E is composed of a plurality of successively arranged curved surfaces which decrease in radius of curvature toward the forward end with respect to the direction of an axis P. The taper surface (12) is such that the distance between the end points M1 and M2 of the contour L1 is large in the direction of the axis P, and the angle between the axis P and a tangential line of the contour L1 on the side toward the forward end surface (11) is larger than the angle between the axis P and a tangential line of the contour L1 on the side toward the side circumferential surface (15).

公开(公告)号：US06274855B1

公开(公告)日：2001-08-14

申请号：US09441207

申请日：1999-11-16

申请人： Kazuho Tatematsu ,  Shindo Watanabe

发明人： Kazuho Tatematsu ,  Shindo Watanabe

IPC分类号： H05B310

CPC分类号： H05B3/141 ,  H05B3/148 ,  H05B2203/018 ,  H05B2203/027 ,  Y10T29/49083

摘要： A ceramic heater of required heating properties is made available in that adjusting elements made solid in an electric conductive element are added other than electric conductive elements of an heating resistor in a ceramic heater. Accordingly, resistance temperature coefficient is changed, not largely changing other properties of heating materials. The heating resistor may be used to a double frame ceramic heater, whereby deviations of baking conditions may be made little to heighten adherence and avoid breakage at grain boundaries

摘要翻译： 提供了所需加热性能的陶瓷加热器，其中在陶瓷加热器中除了加热电阻器的导电元件之外，还添加了导电元件中固体的调节元件。 因此，电阻温度系数发生变化，不会在很大程度上改变加热材料的其它性能。 加热电阻器可以用于双框架陶瓷加热器，由此可以减少烘烤条件的偏差，以增加附着力并避免在晶界处的断裂

公开(公告)号：US20130313244A1

公开(公告)日：2013-11-28

申请号：US13985221

申请日：2012-04-18

申请人： Kazuya Matsui ,  Shindo Watanabe

发明人： Kazuya Matsui ,  Shindo Watanabe

IPC分类号： F23Q7/00 ,  H01C17/02

CPC分类号： F23Q7/001 ,  F23Q2007/004 ,  H01C17/02 ,  H05B3/44 ,  Y10T29/49083

摘要： A ceramic heater including a columnar substrate and a heat generation resistor embedded in the substrate. A taper surface (12) having a contour L1 extending along an imaginary ellipse E is composed of a plurality of successively arranged curved surfaces which decrease in radius of curvature toward the forward end with respect to the direction of an axis P. The taper surface (12) is such that the distance between the end points M1 and M2 of the contour L1 is large in the direction of the axis P, and the angle between the axis P and a tangential line of the contour L1 on the side toward the forward end surface (11) is larger than the angle between the axis P and a tangential line of the contour L1 on the side toward the side circumferential surface (15).

摘要翻译： 一种陶瓷加热器，其包括嵌入基板中的柱状基板和发热电阻体。 具有沿着假想椭圆E延伸的轮廓L1的锥形表面（12）由相对于轴线P的方向朝向前端减小曲率半径的多个连续排列的曲面构成。锥形表面 12）使得轮廓L1的端点M1和M2之间的距离在轴线P的方向上大，并且轴线P与轮廓L1在向前端侧的切线之间的角度 表面（11）大于轴线P和侧面侧面（15）侧的轮廓L1的切线之间的角度。