| Conductivity |
| Thermal
/
Electric |
 |
Only
a small portion of Alulight's cross-section is
conductive. These are the pore walls with the conductivity value of
the base alloy. The pore walls are continuously covered with
non-conductive alumina. The main part of the cross section is formed
by the pores filled with air which is non-conductive. Alulight®
is therefore far less conductive than bulk aluminum.
|
|
|
| Test method: The
electric conductivity was calculated from the geometry and the
resistance of the sample. The resistance measurement was
preformed by the four point method |
|
| Summary of Results /
Electrical Conductivity: |
|
|
- function of density and
obeys the power-law dependence with an exponent of 1.5
|
|
|
| Test
method:Comparative method for different temperatures up to
400°C.
Trial sample:Cylindrical
specimens of Alulight with different densities prepared from
various Al-alloys were used. The outer surface of the samples
(Ø 25mm, Länge 20 mm) was removed by electric discharge
machining. |
|
| Summary
of Results:
Thermal Conductivity: |
Main
Applications: |
- Thermal
conductivity of Alulight is only 1/10
of that of base aluminum
|
- recyclable
heat shields
- boxes
for electronic devices, where also electromagnetic shielding
or crash energy absorption are important
|
