Carbon-Carbon-Ceramic Ceramic BrakesBrakes

Pho

to C

redi

t: ht

tp://

new

s.ca

radi

siac

.com

Carbon Fiber Reinforced Silicon Carbon Fiber Reinforced Silicon Carbide Carbide (C/SiC)(C/SiC)

•C/C Brakes were introduced in aircraft

•Suffered serious dissadvantages

•Low coefficient of friction below 450 C

•High rate of wear for the pads

•C/C-SiC

•Woven carbon reinforced carbon core material

•Thin surface layer of SiC

ManufactureManufacture

Preparation of a C/C composite Preparation of a C/C composite corecore

Liquid silicon infiltrationLiquid silicon infiltration VacuumVacuum High temperatureHigh temperature

SiC layer is formed on the SiC layer is formed on the surface of C/C coresurface of C/C core

Grinding of the sliding surface Grinding of the sliding surface of diskof disk

BenefitsBenefits•High and consistent frictional coefficients (even with high thermal stress)

•High efficiency on a functional temperature range

•Weight advantage over conventional cast iron components (65%)

•Reduction of unsprung mass (5 Kg/wheel) exceptional driving behavior

•Not affected by corrosion

•Superior response in all driving conditions

•Long life span ( in excess of 300,000 Km)

•No disk distortion or judder

•Early and consistent brake response

•Reduction of the stopping distance

ApplicationsApplications

Imag

e c

red

it:

R. L.

Hech

t, M

ate

rials

Sci

en

ce D

ep

art

men

t, F

ord

Rese

arc

h L

ab

ora

tory

•Super-sport vehicles

•Luxury SUVs

•Aircraft

•Elevators

•Trains