Tungsten-rhenium filament and method for producing same
    21.
    发明申请
    Tungsten-rhenium filament and method for producing same 有权
    钨铼丝及其制造方法

    公开(公告)号:US20020145373A1

    公开(公告)日:2002-10-10

    申请号:US09812010

    申请日:2001-03-19

    CPC classification number: H01K1/08

    Abstract: A tungsten-rhenium filament for an operation temperature between 2900 and 3200null K is disclosed. The filament comprises an aluminum-potassium-silicon (AKS) additive. The filament has a grain microstructure comprising substantially exclusively elongated interlocking grains with a Grain Aspect Ratio (GAR) not less than 12. The rhenium content of the filament is between 0,2-0,4% by weight. A method for manufacturing a rhenium-tungsten filament is also disclosed. The method comprises the following steps. An AKS doped tungsten-rhenium alloy powder is prepared with a rhenium content of 0,2-0,4% by weight. The alloy powder is pressed and presintered, and thereafter sintered with direct current. A rhenium-tungsten filament is formed, which has a metastable crystal structure. The filament is annealed below the recrystallisation temperature, and recrystallised above the recrystallisation temperature. There is also provided a halogen incandescent lamp with a glass envelope enclosing a tungsten-rhenium filament.

    Abstract translation: 公开了一种操作温度在2900和3200K之间的钨 - 铼丝。 长丝包括铝 - 钾 - 硅(AKS)添加剂。 细丝具有包含基本上仅具有不小于12的晶粒长宽比(GAR)的细长互锁晶粒的晶粒微结构。细丝的铼含量在0.2-0.4重量%之间。 还公开了一种制造铼钨丝的方法。 该方法包括以下步骤。 制备铼含量为0.2-0.4%(重量)的AKS掺杂钨 - 铼合金粉末。 将合金粉末压制并预烧结,然后用直流电烧结。 形成具有亚稳晶体结构的铼 - 钨丝。 丝在低于再结晶温度下退火,并在再结晶温度以上重结晶。 还提供了一种卤素白炽灯,其中包围有钨 - 铼灯丝的玻璃信封

    Vehicle lamps with improved filament and filament support configurations
    22.
    发明申请
    Vehicle lamps with improved filament and filament support configurations 审中-公开
    具有改进的灯丝和灯丝支撑配置的车灯

    公开(公告)号:US20020008452A1

    公开(公告)日:2002-01-24

    申请号:US09818322

    申请日:2001-03-27

    CPC classification number: H01K1/18 F21S41/164 H01K1/26 H01K9/08

    Abstract: A lamp capsule for use in a vehicle headlamp includes a lamp envelope having a tubular portion. First and second spaced-apart filaments are mounted in the lamp envelope for emitting light when energized by electrical energy. The lamp capsule further includes one or more light-attenuating axial stripes on the lamp envelope. The axial stripes are positioned on the lamp envelope for blocking light emitted by the first filament and reflected by the second filament. The lamp capsule may further include light-attenuating rings at or near opposite ends of the lamp envelope for defining upper and lower boundaries of a clear region of the lamp envelope. A filament support structure may include support leads located in the plane of the filaments for limiting light blockage and stray reflections.

    Abstract translation: 用于车辆前照灯的灯壳包括具有管状部分的灯壳。 第一和第二间隔开的细丝安装在灯外壳中,用于在通过电能激励时发光。 灯胶囊还包括在灯泡上的一个或多个光衰减的轴向条纹。 轴向条纹位于灯壳上,用于阻挡由第一灯丝发射并被第二灯丝反射的光。 灯胶囊还可以包括在灯壳的两端或附近的光衰减环,用于限定灯壳的透明区域的上边界和下边界。 灯丝支撑结构可以包括位于灯丝平面中的支撑引线,用于限制光线阻塞和杂散反射。

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