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http://dx.doi.org/10.7844/kirr.2018.27.5.30

Study on Manufacture of Tantalum Powder from Tantalum Scrap using Hydride-Dehydride Process (HDH Process)  

Lee, Ji-eun (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering)
Lee, Chan Gi (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering)
Park, Ji Hwan (Material Technical innovation Group (MTIG))
Yoon, Jin-Ho (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering)
Publication Information
Resources Recycling / v.27, no.5, 2018 , pp. 30-37 More about this Journal
Abstract
For recylcing of high purity tantalum (Ta) scrap, We investigated manufacture of tantalum powder using hydride-dehydride (HDH) process. Tantalum had excellent properties such as ductile, hardness and high melting point. Usually these properties made difficult to make a powder. In this study, Tantalum powder was manufactured using Tantalum hydride via hydridation. Tantalum hydride was formed at $500^{\circ}C$, 5 hr/$700^{\circ}C$, 3 hr and it is easy to make a tantalum hydride powder because hydrogen in the tantalum act as a defect dislocation and lattice expansion. The powder was pulverized to a size of less than $10{\mu}m$ under a condition of 1300 rpm, 30 min using a ring mill, and tantalum powder with less than 50 ppm hydrogen was prepared through dehydridation in an Ar and low vacuum atmosphere.
Keywords
Hydride-Dehydride process; tantalum powder; recycling; scrap;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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