Saturated aircraft brake preform including coal tar pitch and preparation thereof

摘要

A method of making a saturated aircraft brake preform placing a carbon fiber preform; under a vacuum heating the carbon fiber preform; introducing coal tar pitch having a softening point in the range of about 160°C-240°C into the carbon fiber preform; pressurizing the coal tar pitch saturated carbon fiber preform with nitrogen; cooling the saturated carbon fiber; processing the saturated carbon fiber preform by chemical vapor infiltration.