Borgwarner Inc.

Deanna L Miller Higgins

Robert C Lam

Feng Dong

A friction material has a first outermost surface and a second outermost surface spaced apart from the first outermost surface. The friction material includes a base which forms at least a portion of the first outermost surface. The base includes fibers present in an amount of from 20 to 80 weight percent, a filler present in an amount of from 20 to 80 weight percent, and a deposit which forms at least a portion of the second outermost surface and includes a friction adjusting agent. The friction material further includes a resin disposed throughout the friction material. The deposit is disposed in the friction material in a gradated pattern. At least a portion of the deposit is exposed to the environment and the second outermost surface has a surface roughness of from 2 to 11 micrometers as determined by non-contact laser measurement according to ISO 25178.

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Berkley, MI, United States of America

Deanna L Miller Higgins