MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Microstructure of Ti-Cr Nanoparticles Prepared by Electrical Wire Explosion
Sujeong LeeWonbaek KimJe-shin ParkChang-yul SuhSung-wook Cho
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2011 Volume 52 Issue 2 Pages 135-138

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Abstract

The reaction products of electrical wire explosion with 25 at% Cr-coated Ti wire were identified as β-TiCr2, α-Ti, β(Ti,Cr) and α-TiCr2 based on the selected area electron diffraction patterns. There was a bimodal size distribution where Ti-Cr particles were 40–50 nm in size, and fine particles less than 10 nm were determined to be pure Ti or Cr. The Ti-Cr nanoparticles are not only a mixture of Ti-Cr phases but they are also heterogeneous themselves at a single particle level, due to the non-equilibrium effects of the EWE process. The very rapid collision and subsequent coalescence of Ti and Cr atom clusters are believed to have contributed to the formation of chemically segregated particles.

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© 2011 The Japan Institute of Metals and Materials
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