Gm Global Technolgoy Operations, Inc.

Ronnie T Brown

Michael D Hanna

Richard Murray Kleber

James A Webster

Michael L Holly

Kee Hyuk Im

Lisa G Devoe

Donna Y Sekulovski

Charon L Morgan

A ferritically nitrocarburized rotational member of a vehicle brake is disclosed, including a rotational member having a friction surface configured for braking engagement with a corresponding friction material. A compound zone is disposed at the friction surface. An exposed surface of the compound zone is exposed to an atmosphere. The area of the exposed surface includes from about 0 percent to about 14 percent graphite.

Friction brake component and method for manufacturing the same

One exemplary embodiment of a brake rotor includes a cheek member, an intermediate portion, and a hub member. The intermediate portion may be located between the cheek and hub members, and may extend from either the cheek member or the hub member. The intermediate portion may have an exposed section with multiple openings located in the exposed section. The intermediate portion may also have multiple blades extending from inner surfaces of all or some of the openings. The blades cause airflow to pass through the openings to cool the intermediate portion.

Brake rotor with intermediate portion

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Bloomfield Hills, MI, United States of America

Ronnie T Brown