Metal matrix composite

摘要

A metal matrix composite (MMC), such as a brake drum, includes a preform having ceramic particles and ceramic fibers and defining a plurality of voids. The metal matrix composite also includes a support element, such as a metal, disposed within the voids of the preform. The MMC has a wear surface defined by both the preform and the support element.

主权项

1. A brake drum for use in vehicle braking applications, said brake drum comprising:
a preform comprising ceramic particles and ceramic fibers with said preform having an inner surface and an opposing outer surface and defining a plurality of voids; a support element comprising a metal and disposed within said plurality of voids of said perform between said inner surface and said outer surface of said preform for forming a metal matrix composite with said support element terminating at said inner surface of said preform such that said inner surface of said preform remains exposed; and a wear surface defined by said exposed inner surface and said support element such that said wear surface is defined by both said preform and said support element; wherein said inner surface of said preform has a cylindrical configuration such that said wear surface is continuous along said inner surface of said preform.