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 Temperature
range: -180°C to 2000°C
Exchangeable
furnaces
- 180°C ... 500°C
Low temperature furnace
RT ... 1500°C High temperature furnace
RT ... 1600°C High temperature furnace
RT ... 2000°C Highest temperature furnace
Special
sample holders for molten metals, powders, single fibers, etc.
Automatic
pushrod adjustment
Vacuum
tight
c-DTA®
The development
of new high-tech ceramic, powdered metal and composite materials
requires exact knowledge of the thermal expansion and sintering
behavior. Investigations into reactions and phase transitions
are often required under extreme measurement conditions, such
as very high temperatures. The NETZSCH Dilatometer 402 C can
be equipped with different sample holders and furnaces to fulfill
almost all possible requirements of the system. For example,
one of the furnaces available for the Dilatometer 402 C allows
measurements from room temperature to 2000°C, under inert
conditions or in a vacuum, with a high degree of precision.
The DIL 402 C combines many years of experience with the newest technology,
a modern, efficient design and easy operation.
Sample Holder
For determination of: linear
thermal expansion, coefficients of thermal expansion (CTE),
sintering temperatures, sintering steps, phase transformations,
decomposition temperatures, glass transition temperatures,
softening points and density changes.
Because
of its excellent thermal and mechanical properties silicon
nitride is used more and more for high-tech applications (e.g.
valves in automobile engines). Of course, the properties of
the final parts are strongly dependent on the production/sintering
process. Depicted in this figure are the thermal expansion
and rate of expansion of a silicon nitride green body. The
sintering step starting at 1201°C is due to the influence
of the sintering additives. The main shrinkage step occurred
at 1424°C (extrapolated onset). The effect above 1760°C
is most probably due to evaporation of additives.
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