Articles - Pulsed current activated combustion synthesis and consolidation of nanostructured TaSi2
- In-Yong Koa , Jeong-Hwan Parka,b, Kee-Seok Namc and In-Jin Shona,b*
- a Division of Advanced Materials Engineering, the Research Center of Advanced Materials Development, Chonbuk National University, 664-14 Deokjin-dong 1-ga, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea b Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Chonbuk National University, 664-14 Deokjin-dong 1-ga, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea c Korea Institute of Materials Science 531 Changwondaero, Changwon, Gyeongnam, 641-831, Korea
Abstract
Dense nanostructured TaSi2 was synthesized by a pulsed current activated combustion synthesis (PCACS) method within 2 minunites in a one step front mechanically activated powders of Ta and Si. Simultaneous combustion synthesis and densification were accomplished under the combined effects of a pulsed current and mechanical pressure. Highly dense TaSi2 with a relative density of up to 98% theoretical was produced under simultaneous application of a 60 MPa pressure and the pulsed current. The average grain size and mechanical properties (hardness and fracture toughness) of the compound were investigated.
Keywords: Pulsed current activated combustion; Intermetallic; Nanophase; TaSi2
This Article
Copyright 2019 International Orgranization for Ceramic Processing. All rights reserved.Clean-Energy Research Institute(CRI), Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
E-mail: jcpr@hanyang.ac.kr