Silicon-carbide reinforced composites of titanium aluminide
AssigneeGeneral Electric Company
InventorPaul A. Siemers
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Abstract
A method of forming a composite of fibers having high strength at high temperatures in a high temperature metal matrix is taught. The high strength fibers may be silicon carbide fibers. The fibers are aligned and disposed on a substrate surface. A metal to serve as a matrix is provided in powder form with relatively larger particles of the order of more than 100 .mu.m. The powder is plasma spray deposited on the fiber coated substrate surface to cause the metal to at least partially envelop the fibers. The composite is then separated from the substrate.
Claims15
The method of forming filaments reinforced metal matrix materials which comprises
- disposing an array of aligned high strength high temperature filaments on a receiving surface
- providing, in powdered form, a particulate titanium base metal of average particle size of at least 100 .mu.m to serve as a matrix to said fibers,
- radio frefquency plasma spray depositing said metal particles onto said array of filaments to at least partially impregnate said array and embed said filaments in the metal foil deposit formed by said plasma spray.
A composite structure comprising
- a plurality of aligned high strength, high temperature filaments,
- said filaments being directly embedded in a host metal formed by low pressure RF plasma spray depostion around said filaments of rapidly solidified particulate titanium base alloy metal of average particle size of at least 100 .mu.m.
A composite structure comprising
- a plurality of layers of aligned high strength, high temperature filaments,
- said filaments being embedded in a host titanium base matrix material formed by low pressure RF plasma spray deposition of particles of said titanium base metal of average particle size of at least 100 .mu.m,
- said host titanium base matrix metal being made up from layers which are consolidated at high temperature and pressure, and
- the interfaces at which said layers are joined lying generally along tangent lines extending from aligned filaments, said tangents lying generally parallel to each other.
Dependencies are inferred from the claim text.