Method for producing melt-infiltrated ceramic composites using formed supports
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United States of America Patent
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Jan 7, 2003
Grant Date -
Dec 5, 2002
app pub date -
May 30, 2001
filing date -
May 30, 2001
priority date (Note) -
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Abstract
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.
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