초록 ▼

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 r

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 Fe3Al and FeAl.

대표청구항 ▼

A process for synthesizing iron aluminides from elemental powders comprising: mixing Fe and Al powders in a ratio which approximates the stoichiometric composition of an iron aluminide compound; forming a compact from the mixed Fe and Al; and heat treating the compact by heating to near the melting

A process for synthesizing iron aluminides from elemental powders comprising: mixing Fe and Al powders in a ratio which approximates the stoichiometric composition of an iron aluminide compound; forming a compact from the mixed Fe and Al; and heat treating the compact by heating to near the melting temperature of aluminum such that an exothermic reaction is initiated characterized by melt formation of Al accompanied by exothermic heating due to chemical mixing of Fe and Al to form an iron-aluminide compound.