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    • 2. 发明授权
    • Tungsten-rhenium filament and method for producing same
    • 钨铼丝及其制造方法
    • US06624577B2
    • 2003-09-23
    • US09812010
    • 2001-03-19
    • István MészárosTamás GálGyörgy NagyBéla Szeles
    • István MészárosTamás GálGyörgy NagyBéla Szeles
    • H01J1704
    • H01K1/08
    • A tungsten-rhenium filament for an operation temperature between 2900 and 3200° 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 crystallization temperature. There is also provided a halogen incandescent lamp with a glass envelope enclosing a tungsten-rhenium filament.
    • 公开了一种操作温度在2900和3200°K之间的钨 - 铼丝。 长丝包括铝 - 钾 - 硅(AKS)添加剂。 细丝具有包括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。
    • 3. 发明授权
    • Tungsten-rhenium filament and method for producing same
    • 钨铼丝及其制造方法
    • US06597107B1
    • 2003-07-22
    • US09683510
    • 2002-01-11
    • István MészárosTamás GálGyörgy NagyZita Fábián
    • István MészárosTamás GálGyörgy NagyZita Fábián
    • H01J162
    • H01K1/08B22F5/12C22C1/045
    • A tungsten-rhenium filament is disclosed. The filament has a re-crystallization temperature above 2000° C., and it comprises an aluminum-potassium-silicon (AKS) additive. The potassium content of the filament is between 80-110 ppm, and the rhenium content is between 0.05-0.19% 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 0.05-0.19% by weight, and a potassium content between 80-110 ppm. 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 wound on a mandrel, and it is annealed on the mandrel below the re-crystallization temperature. The filament is finally re-crystallized above the re-crystallization temperature. A halogen incandescent lamp with an envelope enclosing a tungsten-rhenium filament is also provided.
    • 公开了钨 - 铼丝。 长丝具有高于2000℃的再结晶温度,并且其包含铝 - 钾 - 硅(AKS)添加剂。 长丝的钾含量在80-110ppm之间,铼含量在0.05-0.19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AKS掺杂的钨 - 铼合金粉末,铼含量为0.05-0.19重量%,钾含量在80-110ppm之间。 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。 将丝缠绕在心轴上,并且在心轴上在再结晶温度下退火。 最终在再结晶温度之上重新结晶细丝。 还提供了一种带有包围钨 - 铼丝的信封的卤素白炽灯。