Process for production of intermetallic compoud-based composite material
AssigneeNGK Insulators, Ltd.
InventorMasahiro Kida
Life of this patent
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Abstract
There is provided a process for producing an intermetallic compound-based composite material containing a reinforcing material and an intermetallic compound. The process includes infiltrating a metal powder into the gaps of a reinforcing material to form a preform and impregnating the preform with an Al melt to give rise to a spontaneous combustion reaction between the metal powder and the Al melt to convert the Al melt into an aluminide intermetallic compound. The Al melt and the metal powder are used in such amounts that they do not remain after the spontaneous combustion reaction. The process can produce an intermetallic compound-based composite material of large size and complicated shape in reduced steps.
Claims18
A process for producing an intermetallic compound-based composite material comprising a reinforcing material and an intermetallic compound, which comprises:
- mixing a metal powder with a reinforcing material to obtain a mixed powder, fulfilling thus obtained mixed powder into a vessel, placing Al on an upper side of the mixed powder fulfilled into the vessel, and impregnating the mixed powder with an Al melt to give rise to a spontaneous combustion reaction between the metal powder and the Al melt to convert the Al melt into an aluminide intermetallic compound, wherein the Al melt and the metal powder are used respectively in such amounts that a mass ratio of a remaining Al after the spontaneous reaction to the intermetallic compound-based composite material is within a range from 0:10 to 3:7.
A process for producing an intermetallic compound-based composite material according to claim 11, wherein the reinforcing material is at least one member selected from the group consisting of Al2O3, AlN, SiC and Si3N4.
A process for producing an intermetallic compound-based composite material comprising a reinforcing material and an intermetallic compound:
- said process comprising;
- mixing a metal powder and an oxide powder reducible by Al with a reinforcing material to obtain a mixed powder, fulfilling thus obtained mixed powder into a vessel, placing Al on an upper side of the mixed powder fulfilled into the vessel, and impregnating the mixed powder with an Al melt to give rise to a spontaneous combustion reaction between the metal powder and the Al melt to convert the Al melt into an aluminide intermetallic compound, wherein Al, the metal powder and the oxide powder are used respectively in such amounts that a mass ratio of a remaining Al after the spontaneous combustion reaction to the intermetallic compound-based composite material is within a range from 0:10 to 3:7.
Dependencies are inferred from the claim text.