Articles - Properties and rapid consolidation of binderless titanium nitride by pulsed current activated sintering
- Wonbaek Kima, Je-Shin Parkb, Sung-Wook Choa, Na-Ri Kimb, In-Yong Kob and In-Jin Shonb,c,*
- a Mineral Resources Research Division, Korea Institute of Geoscienceand Mineral Resources, Daejeon 305-350, Republic of Korea b Division of Advanced Materials Engineering and Research Center for Advanced Materials Development, Engineering College, Chonbuk National University, 664-14 Deokjin-dong 1-ga, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea c Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Chonbuk National University, Chonbuk, 561-756, Republic of Korea
Abstract
A nanopowder of TiN was fabricated by explosion of Ti wire under a nitrogen pressure of 1 atmosphere. A dense pure TiN hard material with a relative density of up to 97% theoretical was produced with the simultaneous application of 80 MPa pressure and a pulsed current within 2 minutes. The hardness and fracture toughness of TiN sintered at 1600oC under 80 MPa pressure and 2800A are 1650 kg·mm−2 and 6 MPa·m1/2.
Keywords: Sintering, Nanopowder, Hardness, TiN.
This Article
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