부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2008.11.140 Byline: H.I. Won, H.H. Nersisyan, C.W. Won Keywords: Ta; SHS; Capacitor Abstract: In this paper, the synthesis of capacitor-grade tantalum (Ta) powder via the self-propagating high-temperature synthesis (SHS) method is described. In addition, the sintering aspects and electrical characteristics of the powder are discussed. Ta powder was prepared via the combustion of a Ta.sub.2O.sub.5-xMg-kNaCl mixture, under argon pressure. The morphology and size of the final powder particles was controlled by adjusting the Mg-NaCl concentration. The final powder particles had nodular shapes and sizes ranging from 0.1 to 0.5[mu]m. A leakage current of a sintered Ta sample containing the smallest particle size was 10[mu]A; its capacitance was 92,738 CV, when a 40-V voltage was applied to the sample. Author Affiliation: Rapidly Solidified Materials Research Center (RASOM), Chungnam National University, Yuseong, Daejeon 305-764, South Korea Article History: Received 6 August 2008; Revised 26 November 2008; Accepted 28 November 2008