1. Introduction
Zirconium diboride (ZrB2) is a potential advanced ceramic material for use at high temperatures requiring resistance to wear, oxidation, and corrosion. It has a very good thermal and electrical conductivity [1] and [2]. However, there have been few reports on the composition, structure and physical properties of the ZrB2 nanocrystallites, indicating that there is a great challenge in synthesis and characterization of nanocrystalline ZrB2.