Materials Transactions Online

Materials Transactions, Vol.50 No.12 (2009) pp.2897-2899
© 2009 The Japan Institute of Metals

Synthesis of TiN Nanoparticles by Explosion of Ti Wire in Nitrogen Gas

Wonbaek Kim1, Je-shin Park1, Chang-yul Suh1, Sung-wook Cho1, Sujeong Lee1 and In-Jin Shon2

1Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources, 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Korea
2Division of Advanced Materials Engineering, Chonbuk National University, Chonbuk 561-756, Korea

Nano-sized Titanium nitride powders were synthesized by electrical explosion of Ti wire under nitrogen atmosphere ranging from 0.2 to 1.5 atm. Electron microscopy and X-ray diffraction studies revealed that the reaction products are cube-shaped single phase TiN nanoparticles. The lattice parameter of TiN nanoparticles increased with nitrogen pressure in the chamber. The nitrogen content of nanoparticles was estimated from their lattice parameter being comparable to the stoichiometric composition of TiN. Small amount of TiN0.3 phase was formed when nitrogen pressure in the chamber was low.

(Received 2009/8/26; Accepted 2009/9/24; Published 2009/11/25)

Keywords: wire explosion, TiN, nanoparticle

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