Machinable metal matrix composite and method for making the same
AssigneeDsc Materials LLC
InventorsFrank V Nolfi, JR., Simon John Barnes, William John Frederick Morgan
Life of this patent
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Abstract
A metal matrix composite comprises and/or consists of a uniform distribution of calcined ceramic particles having an average particle size of between 0.30 and 0.900 microns and a metal or alloy uniformly distributed with the ceramic particles and wherein the ceramic particles include oxides of two separate metals selected from the group consisting of Al, Li, Be, Pb, Fe, Ag, Au, Sn, Mg, Ti, Cu, and Zn, and in which said ceramic particles comprise at least 15 volume percent of the metal matrix sintered together and wherein said metal-matrix being machinable with a high speed steel (HSS) bit for greater than about one minute without excessive wear to the bit.
Claims18
A metal-matrix composite comprising a uniform distribution of calcined ceramic particles having an average particle size of between 0.35 and 0.900 microns and a metal or alloy substantially uniformly distributed with said ceramic particles and in which said ceramic particles comprise at least about 15 volume percent of the metal matrix and said metal-matrix composite being machinable with a high speed steel (HSS) bit for greater than about one (1) minute without excessive wear to said bit.
A metal-matrix composite comprising a uniform distribution of calcined ceramic particles having an average particle size of between 0.35 and 0.900 microns and a metal or alloy substantially uniformly distributed with said ceramic particles and in which said ceramic particles include oxides of two (2) separate metals selected from the group consisting of Al, Li, Be, Pb, Fe, Ag, Au, Sn, Mg, Ti, Cu, and Zn, and in which said ceramic particles comprise at least 15 volume percent of the metal matrix and wherein said metal-matrix composite being machinable with a high speed steel (HSS) bit for greater than about one (1) minute without excessive wear to said bit.
A metal-matrix composite comprising a uniform distribution of calcined ceramic particles having an average particle size of greater than about one (1) micron and a metal or alloy substantially uniform and distributed with said ceramic particles in which said ceramic particles comprise at least about 15 volume percent of the metal-matrix and in which said ceramic particles are thermally stable in the metal-matrix.
A metal-matrix composite comprising a uniform distribution of calcined ceramic particles having an average particle size of between 0.35 and 0.90 microns and a metal or alloy substantially uniform and distributed with said ceramic particles and in which said ceramic particles comprise at least 15 volume percent of the metal-matrix and said metal-matrix composites being machinable with a high-speed steel (HSS) for greater than about one (1) minute without excessive wear to said bit and in which said metal is selected from the group consisting of aluminum and magnesium and mixtures thereof;
- and wherein at least 80% of said ceramic particles are uniformly distributed on a scale of three times the particle size;
- and
- in which said ceramic particle have an aspect ratio of no greater than about 3:1.
Dependencies are inferred from the claim text.