Researchers Submit Patent Application, "Ceramic Matrix Composite Component and a Method of Attaching a Static Seal to a Ceramic Matrix Composite Component", for Approval
The patent's assignee is
News editors obtained the following quote from the background information supplied by the inventors: "A number of techniques have been used in the past to manufacture turbine engine components, such as turbine blades or nozzles using ceramic matrix composites (CMC). One method of manufacturing CMC components relates to the production of silicon carbide matrix composites containing fibrous material that is infiltrated with molten silicon, herein referred to as the Silcomp process. The fibers generally have diameters of about 140 micrometers or greater, which prevents intricate, complex shapes, such as turbine blade components, to be manufactured by the Silcomp process.
"Another technique of manufacturing CMC turbine blades is the method known as the slurry cast melt infiltration (MI) process. In one method of manufacturing using the slurry cast MI method, CMCs are produced by initially providing plies of balanced two-dimensional (2D) woven cloth comprising silicon carbide (SiC)-containing fibers, having two weave directions at substantially 90.degree. angles to each other, with substantially the same number of fibers running in both directions of the weave.
"Generally, such turbine components require attachment to adjoining metallic hardware and/or metallic surfaces. Two disadvantages associated with attaching a CMC to metallic hardware are the wear of the metallic hardware by the hard, abrasive ceramic material surface, and the lack of load distribution in the CMC. Load distribution is critical in the interfaces between the CMC components and metal surfaces, such as shrouds. Typically, metallic shims or ceramic cloths have been interposed between the CMC and metallic surfaces to improve load distribution. Wear is typically reduced by the application of coatings to the metallic hardware or coatings to the nozzle attachment surfaces.
"Therefore, a ceramic matrix composite (CMC) component and a method of attaching a metal seal to a CMC component that do not suffer from the above drawbacks is desirable in the art."
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "According to an exemplary embodiment of the present disclosure, a ceramic matrix composite component is provided. The ceramic matrix composite component includes a first end and a second end. The ceramic matrix composite component includes a CMC metal interface member attached to the second end. The CMC metal interface member is operable to join to a static seal in a gas turbine.
"According to another exemplary embodiment of the present disclosure, a method of attaching a static seal to a ceramic matrix composite component is provided. The method includes providing a ceramic matrix composite component having a first end and a second end. The method includes providing a CMC metal interface member. The method includes attaching the CMC metal interface member to the second end of the ceramic matrix composite component. The method includes providing a static seal and joining the static seal to the CMC metal interface member. The CMC metal interface member forms a plenum for purging rotor air.
"Other features and advantages of the present invention will be apparent from the following more detailed description of the preferred embodiment, taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
"FIG. 1 is a perspective schematic section view of a CMC component of the present disclosure.
"FIG. 2 is a perspective schematic section view of a CMC component of the present disclosure.
"FIG. 3 is a schematic top partial view of a CMC component of the present disclosure.
"FIG. 4 is a flow chart of the method of attaching a static seal to a CMC component of the present disclosure.
"Wherever possible, the same reference numbers will be used throughout the drawings to represent the same parts."
For additional information on this patent application, see: GROOMS, II,
Keywords for this news article include: Silicon, Nanotechnology, Emerging Technologies,
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