CERAMIC PREFORM AND METHOD

摘要

The present application discloses a ceramic preform, a method of making a ceramic preform and a metal matrix composite comprising a ceramic preform. In one exemplary embodiment, the ceramic preform comprises a ceramic compound compressed into the shape of a cylinder by rotational compression molding. The cylinder has an inner surface and an outer surface. A first liner may be attached to the inner surface of the cylinder and a second liner may attached to the outer surface of the cylinder. The metal matrix composite of the present application may be formed as a brake drum or a brake disc.

主权项

1. A method of making a ceramic preform for a vehicle component, the method comprising:
utilizing a compression molding apparatus having a first die portion having a first molding surface and a second die portion having a second molding surface; placing one or more porous liners between a ceramic compound and at least one of the first molding surface and second molding surface; compressing the ceramic compound between the first and second die portions to form a ceramic preform having the one or more liners disposed on an external surface of the ceramic preform; removing the ceramic preform from the compression molding apparatus, wherein the one or more porous liners are attached to the external surface of the ceramic preform; and wherein the ceramic compound comprises ceramic particles, reinforcing fibers, organic materials, and water; and wherein the one or more porous liners are absorbent and draw moisture away from the external surface of the ceramic preform, maintain the shape of the ceramic preform, and are capable of being burned off of the ceramic preform during heat treatment of the ceramic preform.