Production of zirconium diboride powder in a molten salt bath
US4414188A · kind A · utility
11Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1982 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | Apr 23, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B35/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for production of ZrB.sub.2 powder in a molten salt bath by reaction of ZrCl.sub.4 or ZrCl.sub.2 with a boron halide and Al or Mg. In a preferred embodiment the salt bath comprises ZrCl.sub.4, KCl and NaCl maintained at a temperature of about 540.degree. to 660.degree. C. and solid Al powder is reacted with ZrCl.sub.4 and BCl.sub.3. The ZrB.sub.2 powder produced in a particularly preferred embodiment has a median particle size of about 1.1 microns, is equiaxed, and has only a single phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.