| Title |
The Properties and Manufacture of Porous Tantalum Powder for Capacitor |
| Authors |
이상일(Sang Il Lee); 이승영(Seung Young Lee); 원창환(Chang Whan Won) |
| DOI |
https://doi.org/10.3365/KJMM.2010.48.04.326 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
SHS; capacitor; tantalum powder; deoxidation; porous tantalum |
| Abstract |
Porous and net-shaped tantalum powder for a capacitor was formulated in a SHS (self-propagating high-temperature synthesis) process. However, this powder, which has weak strength among its particles and low flow ability, cannot be used for a capacitor. Therefore, this powder was sintered in a high-vacuum furnace to increase agglomeration to improve the flow ability, bonding strength among the particles, and shrinkage during pellet sintering. Finally, it was deoxidated with 2 wt% Mg powder to remove the increased surface oxygen that arose during the sintering process. The final product was analyzed in terms of its chemical and physical properties and was compared with a commercial powder used by a capacitor manufacturer. (Received October 29, 2009) |