Cogged component for the mechanical transmission of force
AssigneeDeutsches Zentrum für Luft- und Raumfahrt e.V.
InventorsWalter Krenkel, Richard Kochendoerfer
Life of this patent
Estimating the term…
Abstract
A cogged component, especially a wheel, rack, pinion, spline, or similar structure, intended for the mechanical transmission of force. The body is of a composite reinforced with carbon fibers. The body is, in accordance with the invention, of fiber-reinforced ceramic comprising a lattice of essentially continuous carbon fibers and a matrix that contains carbon. The fibers in the lattice are sheathed in silicon carbide formed essentially by liquid silicon infiltrating the lattice and reacting with the carbon in the matrix. The cogs are constructed either of a similar fiber-reinforced ceramic with a load-accommodating fiber orientation or of a monolithic ceramic.
Claims20
In a cogged component intended for the mechanical transmission of force and with a body of a composite reinforced with carbon fibers, the improvement wherein said body is of fiber-reinforced ceramic comprising a lattice of essentially continuous carbon fibers and a matrix that contains carbon, whereby the fibers in the lattice are sheathed in silicon carbide formed essentially by liquid silicon infiltrating the lattice at temperatures of at least 1450.degree. C. in vacuum and reacting said silicon with the carbon in the matrix to form said silicon carbide, and wherein the cogs are constructed either of a similar fiber-reinforced ceramic with a load-accommodating fiber orientation or of a monolithic silicon carbide based ceramic.
Dependencies are inferred from the claim text.