Abstract:
This invention relates generally to a novel process for making self-supporting polymer matrix composite bodies, and the novel products produced thereby. More specifically, an appropriate filler material is caused to be placed within a particular polymer material, whereby the polymer material functions as a matrix and the filler material synergistically interacts with the polymer to form a novel composite body. By combining specific polymer matrix materials with specific filler or reinforcing materials, very desirable wear parts can be fabricated.
Abstract:
There is disclosed a method for producing a self-supporting ceramic body by oxidation of a molten precursor metal with a vapor-phase oxidant to form an oxidation reaction product and inducing a molten flux comprising said molten precursor metal through said oxidation reaction product. A second metal is incorporated into said molten flux during the oxidation reaction. The resulting ceramic body includes sufficient second metal such that one or more properties of said ceramic body are at least partially affected by the presence and properties of said second metal in the metallic constituent.
Abstract:
The present invention relates to a novel process for forming metal matrix composite bodies. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material or a preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the filler material or preform. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum. The molten matrix metal is provided in a unique manner which enhances the spontaneous infiltration process.
Abstract:
This invention relates to novel macrocomposite bodies and methods for making the same. More particularly, it has been discovered that the properties of a ceramic, ceramic matrix composite or metal matrix composite body may be improved by providing on at least a portion of the surface of the body a polymer-based material which serves to protect the body from damage which might occur in the absence of the polymer-based material. Furthermore, it may be desirable to place the polymer-based materials on the outer surfaces of, for example, a ceramic material in order to protect the ceramic material from chipping, and so forth, when the ceramic body need only provide wear resistance on its inner surface. Additionally, the presence of the polymer-based material may facilitate installation, external machining, etc.
Abstract:
The present invention relates to a novel process for forming metal matrix composite bodies. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material or a preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the filler material or preform. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum. The molten matrix metal is provided in a unique manner which enhances the spontaneous infiltration process.
Abstract:
This invention relates to novel macrocomposite bodies and methods for making the same. More particularly, it has been discovered that the properties of a ceramic, ceramic matrix composite or metal matrix composite body may be improved by providing on at least a portion of the surface of the body a polymer-based material which serves to protect the body from damage which might occur in the absence of the polymer-based material. Furthermore, it may be desirable to place the polymer-based materials on the outer surfaces of, for example, a ceramic material in order to protect the ceramic material from chipping, and so forth, when the ceramic body need only provide wear resistance on its inner surface. Additionally, the presence of the polymer-based material may facilitate installation, external machining, etc.