This friction
material is used in aircraft braking systems and
in motor-racing activity (Formula 1, Motorcycle
Grand Prix) because of its low weight and capacity
to absorb heat (an aircraft's brake is called a
"heat sink").
Ligne de production
fritté
This material is
a composite. It is made with fibres that give toughness
and a Carbon matrix that provides it with its friction
property. This material has a density of 1.8 compare
with that of 7.85 for steel.
The fibre is place in a mould and compressed to
produce a shape ready for densification.
The fibrons shape
is placed in a furnace at 1000°C. A gas is introduced
in the furnace and releases carbon that deposits
around the fibres.
After 500 to 800
hours, the compound is completely dense. It can
then undergo thermal treatments. It is machined
to final dimensions.
Both disc and brake
pads are made with carbon/carbon.
Carbon/carbon composite
can support temperatures of up to 1600°C temperature
use without deterioration. The carbon/carbon friction
level is not better than that of the sintered material
one, but is stable at very high temperatures.
THE
TECHNOLOGY
