A method for producing shaped articles of ceramic composites provides a high degree of dimensional tolerance to these articles. A fiber preform is disposed on a surface of a stable formed support, a surface of which is formed with a plurality of indentations, such as grooves, slots, or channels. Precursors of ceramic matrix materials are provided to the fiber preform to infiltrate from both sides of the fiber preform. The infiltration is conducted under vacuum at a temperature not much greater than a melting point of the precursors. The melt-infiltrated composite article substantially retains its dimension and shape throughout the fabrication process.
FEDERAL RESEARCH STATEMENT
This invention was first conceived or reduced to practice in the performance of work under contract DE-FC02-92CE41000 awarded by the United States Department of Energy. The United States of America may have certain rights to this invention.