Process for synthesizing compounds from elemental powders

Patent Application · Mon Jan 01 00:00:00 EST 1990

OSTI ID:5050898

Rabin, B H; Wright, R N

A process for synthesizing intermetallic compounds from elemental powders. The elemental powders are initially combined in ratio a which approximates the stoichiometric composition of the intermetallic compound. The mixed powders are then formed into a compact which is heat treated at a controlled rate of heating such that an exothermic reaction between the elements is initiated. The heat treatment may be performed under controlled conditions ranging from a vacuum (pressureless sintering) to compression (hot pressing) to produce a desired densification of the intermetallic compound. In a preferred form of the invention, elemental powders of Fe and Al are combined to form aluminide compounds of Fe{sub 3}Al and FeAl.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC07-76ID01570
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7603650
• Application Number: ON: DE92016211; PPN: US 7-603650
• OSTI ID: 5050898
• Resource Relation: Patent File Date: 26 Oct 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
SYNTHESIS
INTERMETALLIC COMPOUNDS
IRON COMPOUNDS
HOT PRESSING
INVENTIONS
PHASE DIAGRAMS
POWDER METALLURGY
POWDERS
SINTERING
ALLOYS
DIAGRAMS
FABRICATION
MATERIALS WORKING
METALLURGY
PRESSING
TRANSITION ELEMENT COMPOUNDS
360101* - Metals & Alloys- Preparation & Fabrication