公开(公告)号：US5171374A

公开(公告)日：1992-12-15

申请号：US276748

申请日：1988-11-28

申请人： Nack J. Kim ,  Eui W. Lee

发明人： Nack J. Kim ,  Eui W. Lee

IPC分类号： C22F1/04

CPC分类号： C22F1/04 ,  Y10S420/902

摘要： A rapidly solidified aluminum base lithium containing alloy is subjected to at least one overaging treatment and a plurality of rolling passes. Upon completion of the process, the alloy is comprised of grains having an ultrafine grain size. A predominant number of the grains have grain boundaries pinned by the precipitation of Al.sub.3 Zr phase. The alloy has an elongation greater than 500% at temperature above about 500.degree. C. and a strain rate above about 4.times.10.sup.-2 /s.

摘要翻译： 快速凝固的含铝基锂的合金经受至少一次过时效处理和多次轧制。 在该工艺完成后，该合金由具有超细晶粒尺寸的晶粒构成。 主要数量的晶粒具有通过Al 3 Zr相析出固定的晶界。 该合金在高于约500℃的温度下的伸长率大于500％，应变速率高于约4×10 -2 / s。

公开(公告)号：US4671827A

公开(公告)日：1987-06-09

申请号：US786623

申请日：1985-10-11

申请人： Gareth Thomas ,  Nack J. Kim ,  Ramamoorthy Ramesh

发明人： Gareth Thomas ,  Nack J. Kim ,  Ramamoorthy Ramesh

IPC分类号： C21D8/00 ,  C22C38/18

CPC分类号： C21D8/005

摘要： A high-strength, tough alloy steel is formed by heating an alloy steel comprising iron, 0.1-0.4 weight % carbon, 1-3 weight % manganese and 1-13 weight % chromium and optionally containing microalloying amounts of other metals to about 1150.degree. C. to form a stable homogeneous austenite phase, control rolling the steel at about 900.degree. C.-1100.degree. C., followed by rapid cooling to 950.degree. C. and again rolling at that temperature and then quenching the thusly rolled steel in liquid or by air cooling. Tempering at temperatures up to about 300.degree. C. may be effected to further increase the toughness of the steel.

摘要翻译： 通过加热包括铁，0.1-0.4重量％碳，1-3重量％锰和1-13重量％铬并且任选地含有微合金量的其它金属至约1150℃的合金钢来形成高强度，坚韧的合金钢 C.形成稳定的均质奥氏体相，控制钢在约900℃〜1100℃，然后快速冷却至950℃，再次在该温度下进行轧制，然后使液体中的钢材淬火 或通过空气冷却。 可以在高达约300℃的温度下回火以进一步提高钢的韧性。

公开(公告)号：US08217562B2

公开(公告)日：2012-07-10

申请号：US12525398

申请日：2007-09-21

申请人： Dae Yeol Ohm ,  Nack J. Kim ,  Jun Ho Bae ,  Seok Ki Song ,  Hyun Joong Kim ,  Jong Hyun Im

发明人： Dae Yeol Ohm ,  Nack J. Kim ,  Jun Ho Bae ,  Seok Ki Song ,  Hyun Joong Kim ,  Jong Hyun Im

IPC分类号： H01T13/20

CPC分类号： H01T13/39

摘要： Provided is an ignition plug used for an internal-combustion engine. The ignition plug includes: a center electrode; an insulator disposed outside the center electrode; a metal housing disposed outside the insulator; a ground electrode having an end connected to the metal housing and the other end facing the center electrode; and an electrode tip fixed to one or more of the center electrode and the ground electrode. The electrode tip is made of an alloy of iridium Ir, hafnium Hf, and niobium Nb. Therefore, the ignition plug with the low-cost iridium can have high resistance to prevent an iridium element from oxidizing and vaporizing in high speed driving conditions.

摘要翻译： 提供一种用于内燃机的火花塞。 火花塞包括：中心电极; 设置在中心电极外侧的绝缘体; 设置在绝缘体外部的金属壳体; 接地电极，其端部连接到金属壳体，另一端面向中心电极; 以及固定到中心电极和接地电极中的一个或多个的电极头。 电极头由铱Ir，铪Hf和铌Nb的合金制成。 因此，具有低成本铱的火花塞可以具有高的阻力，以防止铱元件在高速行驶条件下氧化和汽化。