Infiltration processing of boron carbide-, boron-, and boride-reactive metal cermets
Patent
·
OSTI ID:5542343
This patent describes a method of fabricating metal-ceramic composites from previously formed ceramic precursor starting constituents selected from boron-carbide, boron and borides and metals reactive therewith selected from reactive metals, alloys thereof, and compounds thereof which reduce to reactive metals or alloys thereof. It comprises: chemically pretreating the previously formed starting constituents of a ceramic precursor; consolidating the chemically pretreated starting constituents into a porous ceramic precursor; infiltrating molten reactive metal into the chemically pretreated ceramic precursor; wherein the step of chemically pretreating the starting constituents of the ceramic precursor alters the surface chemistry to enhance infiltration of the precursor by the molten reactive metal by slowing the kinetics of reaction relative to the kinetics of densification.
- Assignee:
- The Regents of the Univ. of California, Berkeley, CA (USA)
- Patent Number(s):
- A; US 4718941
- Application Number:
- PPN: US 6-875419A
- OSTI ID:
- 5542343
- Country of Publication:
- United States
- Language:
- English
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