Floating zone growth and high-temperature hardness of NbB 2 and TaB 2 single crystals
Abstract
Single crystals of NbB 2 and TaB 2, the Va group diborides, were prepared by the floating zone method. The crystals, free of subgrain boundaries, were obtained by controlling the molten zone composition. The crystals did not have preferential growth directions, though the IVa and VIa group diboride crystals preferentially grow normal and parallel to the c-axis of the hexagonal lattice, respectively. Their growth directions were consistent with anisotropy in their high-temperature hardness.
- Publication:
-
Journal of Crystal Growth
- Pub Date:
- January 1998
- DOI:
- 10.1016/S0022-0248(98)00691-5
- Bibcode:
- 1998JCrGr.194..430O