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US 4,919,594 AGranted
Composite member, unitary rotor member including same, and method of making
AssigneeAllied-Signal Inc.
InventorsE. Scott Wright, James G. Kenehan
Life of this patent
Estimating the term…
Abstract
A composite member includes circumferentially extending ceramic fibers in a metallic matrix. A rotor member integrally includes such a ceramic fiber/metal matrix composite member to reinforce a homogeneous remainder portion of the rotor member with respect to centrifugally induced stresses. Method of making are included in the disclosure.
Claims14
The method of making a ceramic fiber/metal matrix composite member of desired annular configuration including the steps of:
- providing an elongate unidirectional mat of ceramic filaments;
- laminating said unidirectional mat of ceramic filaments between a pair of elongate metallic foils;
- consolidating said laminated unidirectional ceramic filament mat with said pair of metallic foils to form an elongate unitary composite ceramic fiber/metal matrix ribbon;
- circumferentially winding said elongate ceramic fiber/metal matrix ribbon to define an annular hoop form having multiple layers of said ribbon;
- enclosing said annular hoop form in a closed metallic can;
- consolidating said hoop form and said metallic can to form a unitary composite workpiece;
- and
- forming said workpiece to said desired annular configuration.
5 more elements
A method of making unidirectional ceramic fiber/metal matrix composite sheet material comprising the steps of:
- orienting elongate ceramic filaments into substantially parallel coplanar relationship to define an elongate planar ceramic fiber mat having a single coplanar layer of said filaments;
- providing a pair of elongate planar metallic foils, sandwiching said ceramic fibermat between said pair of foils, and consolidating said pair of metallic foils with said ceramic fiber mat to define as a unitary body said composite sheet material, wherein;
- said step of orienting elongate ceramic filaments into substantially parallel coplanar relationship to define said elongate planar ceramic fiber mat comprises the steps of providing a cylindrical radially outwardly disposed and axially extending surface, helically winding onto said cylindrical surface multiple spaced apart windings of an elongate ceramic filament progressively axially across said surface with adjacent ones of said filament windings being substantially parallel, providing a removable binder matrix material to said windings and cylindrical surface, cutting said windings along an axially extending line to define a mat of multiple elongate substantially parallel ceramic filaments bound in said binder matrix, and removing said mat from said cylindrical surface intact with said binder matrix;
- and
- wherein said step of consolidating said pair of metallic foils and said sandwiched ceramic fiber mat comprises the steps of providing an impermeable membrane, sealingly enclosing said pair of metallic foils and said sandwiched ceramic fiber mat within said impermeable membrane, removing said binder matrix;
- and employing heat, pressure applied perpendicularly to the plane of said pair of metallic foils and said sandwiched ceramic fiber mat, and time sufficient to effect consolidation.
3 more elements
Dependencies are inferred from the claim text.