|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||Growth of Iridium and Iridium Alloy Fibers from the Melt by Alloy-micro-pulling-down Method
||Yuui Yokota, Takayuki Nihei, Yuji Ohashi, Shunsuke Kurosawa, Kei Kamada, Akira Yoshikawa
|On-Site Speaker (Planned)
Iridium (Ir) and Ir alloys products with various configurations have been used in wide fields due to the high melting point, high chemical stability and high resistance to oxidation. However, the Ir and Ir alloys are difficult workability and the prices of products increases by increasing the cost of forming processes. Therefore, we have developed the growth method of shape-controlled metal and alloy fibers from the melt by an alloy-micro-pulling-down method using a developed ceramics crucible with high durability at the melting point of the Ir (~2447°C). We grew the Ir and Ir alloys fibers from the melt using the crucible and their fibers with φ1 mm diameter and more than 10 m length could be obtained. The domain structures of the grown fibers were observed by the scanning electron microscope and the fibers were composed of some domains stretched along to the growth direction.