Process for synthesizing compounds from elemental powders and product

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:869062

Rabin, Barry H ^[1]; Wright, Richard N ^[1]

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1. Idaho Falls, ID

A process for synthesizing intermetallic compounds from elemental powders. The elemental powders are initially combined in a ratio 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 & G IDAHO INC
• DOE Contract Number: AC07-76ID01570
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5269830
• OSTI ID: 869062
• Country of Publication: United States
• Language: English

Related Subjects

process
synthesizing
compounds
elemental
powders
product
intermetallic
initially
combined
ratio
approximates
stoichiometric
composition
compound
mixed
formed
compact
heat
treated
controlled
rate
heating
exothermic
reaction
elements
initiated
treatment
performed
conditions
ranging
vacuum
pressureless
sintering
compression
hot
pressing
produce
desired
densification
preferred
form
aluminide
feal
controlled rate
exothermic reaction
heat treatment
heat treated
intermetallic compound
hot pressing
preferred form
pressureless sintering
controlled conditions
elemental powders
intermetallic compounds
hot press
stoichiometric composition
metallic compound
/75/419/