Powder treatment process

Patent · Tue Feb 09 00:00:00 EST 1988

OSTI ID:7073230

Weyand, J D

Disclosed are: (1) a process comprising spray drying a powder-containing slurry, the slurry containing a powder constituent susceptible of oxidizing under the temperature conditions of the spray drying, while reducing the tendency for oxidation of the constituent by including as a liquid constituent of the slurry an organic liquid; (2) a process comprising spray drying a powder-containing slurry, the powder having been pretreated to reduce content of a powder constituent susceptible of oxidizing under the temperature conditions of the spray drying, the pretreating comprising heating the powder to react the constituent; and (3) a process comprising reacting ceramic powder, grinding the reacted powder, slurrying the ground powder, spray drying the slurried powder, and blending the dried powder with metal powder. 2 figs.

• DOE Contract Number: FC07-80CS40158
• Assignee: Aluminum Co. of America, Pittsburgh, PA (United States)
• Patent Number(s): US 4724121; A
• Application Number: PPN: US 6-727377
• OSTI ID: 7073230
• Resource Relation: Patent File Date: 25 Apr 1985
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
POWDERS
FABRICATION
CERAMICS
GRINDING
HEAT TREATMENTS
METALS
ORGANIC COMPOUNDS
OXIDATION
SLURRIES
SPRAY DRYING
CHEMICAL REACTIONS
COMMINUTION
DISPERSIONS
DRYING
ELEMENTS
MACHINING
MIXTURES
SUSPENSIONS
360101* - Metals & Alloys- Preparation & Fabrication
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360601 - Other Materials- Preparation & Manufacture