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US 8,530,363 B2Granted
Cermets from molten metal infiltration processing
AssigneeLawrence Livermore National Security, LLC
InventorRichard L. Landingham
Life of this patent
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Abstract
New cermets with improved properties and applications are provided. These new cermets have lower density and/or higher hardness than B4C cermet. By incorporating other new ceramics into B4C powders or as a substitute for B4C, lower densities and/or higher hardness cermets result. The ceramic powders have much finer particle size than those previously used which significantly reduces grain size of the cermet microstructure and improves the cermet properties.
Claims13
A cermet, comprising:
- a porous ceramic preform matrix comprising ceramic powder that includes nano-powder size particles, wherein said ceramic powder comprises a blend of boron carbide, aluminum boride and magnesium boride, wherein said material comprises a density that is greater than 55%;
- and
- metal alloy located in the pores of said porous ceramic perform matrix.
Dependencies are inferred from the claim text.