Patent
High purity tantalum, products containing the same, and methods of making the same
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TLDR
In this paper, high purity tantalum metals and alloys containing the same properties are described and a process for making the high purity metal which includes the step of reacting a salt-containing tantalum with at least one compound capable of reducing this salt to tantalum powder and a second salt in a reaction container.Abstract:
High purity tantalum metals and alloys containing the same are described. The tantalum metal preferably has a purity of at least 99.995% and more preferably at least 99.999%. In addition, tantalum metal and alloys thereof are described, which either have a grain size of about 50 microns or less, or a texture in which a (100) intensity within any 5% increment of thickness is less than about 15 random, or an incremental log ratio of (111):(100) intensity of greater than about −4.0, or any combination of these properties. Also described are articles and components made from the tantalum metal which include, but are not limited to, sputtering targets, capacitor cans, resistive film layers, wire, and the like. Also disclosed is a process for making the high purity metal which includes the step of reacting a salt-containing tantalum with at least one compound capable of reducing this salt to tantalum powder and a second salt in a reaction container. The reaction container or liner in the reaction container and the agitator or liner on the agitator are made from a metal material having the same or higher vapor pressure of melted tantalum. The high purity tantalum preferably has a fine and uniform microstructure.read more
Citations
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Tantalum and its alloys
TL;DR: Tantalum is a versatile refractory metal used in many applications, such as superalloys, high temperatures, ballistics, capacitors, electronics, chemical processing, and medical applications as discussed by the authors.
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Tateo Ohhashi,Hideaki Fukuyo,Ichiroh Sawamura,Kenichirou Nakamura,Atsushi Fukushima,Masaru Nagasawa +5 more
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