Variation of the shape and morphological properties of silica and metal oxide powders by electro homogeneous precipitation
The present invention provides a method for preparing irreversible linear aggregates (fibrils) of metal oxide powders by utilizing static or pulsed DC electrical fields across a relatively non-conducting liquid solvent in which organometal compounds or silicon alkoxides have been dissolved. The electric field is applied to the relatively non-conducting solution throughout the particle formation and growth process promoting the formation of either linear aggregates (fibrils) or spherical shaped particles as desired. Thus the present invention provides a physical method for altering the size, shape and porosity of precursor hydrous metal oxide or hydrous silicon oxide powders for the development of advanced ceramics with improved strength and insulating capacity. 3 figs.
- Research Organization:
- Lockheed Martin Energy Syst Inc
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- US 5,603,819/A/
- Application Number:
- PAN: 8-257,423
- OSTI ID:
- 441870
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method for extracting metals from aqueous waste streams for long term storage
Method for extracting metals from aqueous waste streams for long term storage