摘要 |
<p>Method of making a carbon-carbon composite article such as an aircraft brake disc. The method includes: selecting carbon fiber precursors, having limited shrinkage in the axial direction when carbonized, in the form of individualized chopped or cut fibers; placing the selected chopped or cut carbon fiber precursors into a preform mold configured in the form of a brake disc to form a fibrous matrix; and then needling the molded fibrous matrix to provide it with three-dimensional structural integrity and to reduce layering. The carbon fiber precursor matrix may subsequently be infused with liquid carbon matrix precursor, the impregnated matrix may be carbonized, e.g., at 700-1800°C for 1-1 0 hours to provide a preform having a density of at least about 1.1 g/cc, and the carbonized preform may be further densified to a density of at least about 1.6 g/cc by known liquid resin infiltration techniques and/or by conventional CVI/CVD processing.</p> |
申请人 |
HONEYWELL INTERNATIONAL INC.;SIMPSON, ALLEN, H.;JAMES, MARK, C.;FRYSKA, SLAWOMIR, T.;LA FOREST, MARK, L. |
发明人 |
SIMPSON, ALLEN, H.;JAMES, MARK, C.;FRYSKA, SLAWOMIR, T.;LA FOREST, MARK, L. |