Abstract: Electrophoretically active sol-gel processes to fill, seal, and/or density porous, flawed, and/or cracked coatings on electrically conductive substrates. Such coatings may be dielectrics, ceramics, or semiconductors and, by the present invention, may have deposited onto and into them sol-gel ceramic precursor compounds which are subsequently converted to sol-gel ceramics to yield composite materials with various tailored properties.

Abstract: A method for forming extremely homogeneous metal and ceramic composites wherein a dispersion of metal and/or ceramic powders in a polymer solution, such as a solution of an organic binder, is precipitated by the addition of a second, miscible solvent in which the polymer is insoluble. The resulting precipitated second phase is compacted, dried and processed to form an extremely uniform composite with excellent physical properties. The method has advantages over other processes since it is relatively flexible and inexpensive yet yields a high quality product.