
Electrolytic Preparation of Zirconium and Hafnium ...
Zirconium and hafnium diborides are synthesized in pure form from a molten cryolite bath under atmospheric conditions by electrolysis at 950 deg.1050 Deg. C at a cathode current density of 10225 a/dm2. The bath also contains small amounts of naoh or na2co3 and a sodium borate. Source compounds may ...