公开(公告)号：US20170072458A1

公开(公告)日：2017-03-16

申请号：US15125491

申请日：2015-03-23

申请人： TANAKA KIKINZOKU KOGYO K.K.

发明人： Akira YOSHIKAWA ,  Yuui YOKOTA ,  Muneki NAKAMURA ,  Kunihiro TANAKA ,  Tatsuya NAKAZAWA ,  Koichi SAKAIRI

IPC分类号： B22D11/00 ,  B22D21/00 ,  C30B29/52 ,  C30B15/08 ,  C30B29/02 ,  C22C5/04 ,  B22D11/11

CPC分类号： B22D11/005 ,  B22D11/00 ,  B22D11/001 ,  B22D11/11 ,  B22D21/005 ,  C22C1/02 ,  C22C5/04 ,  C22F1/18 ,  C30B15/08 ,  C30B29/02 ,  C30B29/52

摘要： The present invention provides a metal wire rod composed of iridium or an iridium alloy, wherein the number of crystal grains on any cross-section in a longitudinal direction is 2 to 20 per 0.25 mm2, and the Vickers hardness at any part is 200 Hv or more and less than 400 Hv. The iridium wire rod is a material which is produced by a μ-PD method, and has low residual stress and which has a small change in the number of crystal grains and hardness even when heated to a temperature equal to or higher than a recrystallization temperature (1200° C. to 1500° C.). The metal wire rod of the present invention is excellent in oxidative consumption resistance under a high-temperature atmosphere, and mechanical properties.

摘要翻译： 本发明提供一种由铱或铱合金构成的金属线材，其中纵向方向的任何截面上的晶粒数为2〜20 / 0.25mm 2，任何部分的维氏硬度为200Hv或 多于400 Hv。 铱线棒是通过μ-PD法制造的材料，残留应力低，即使在加热到再结晶温度以上的温度下，晶粒数和硬度也有小的变化 （1200℃〜1500℃）。 本发明的金属线棒在高温环境下的耐氧化消耗性优异，机械性能优良。