Máy đo độ khuếch tán và dẫn nhiệt LFA 457 MicroFlash NETZSCH
LFA 457 MicroFlash®
Laser Flash Apparatus
State-of-the-art technology for thermophysical properties
The NETZSCH LFA 457 MicroFlash® complies with the latest technology for modern laser flash systems. The table-top instrument allows measurements from -125°C to 1100°C using two different user-exchangeable furnaces.
The innovative infrared sensor technology employed in the system enables measurement of the temperature increase on the back surface of the sample, even at temperatures of -125°C.
The instrument can be used for small and large sample sizes of up to 25.4 mm diameter and, with the integrated sample changer, measurements can be run on several samples at the same time.
The vacuum-tight design enables tests under defined atmospheres.
The vertical arrangement of the sample holder, furnace and detector simplifies sample placement and, at the same time, guarantees an optimum signal-to-noise ratio of the detector signal.
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Temperature range:
-125°C to 500°C, RT to 1100°C, (2 exchangeable furnace types) -
Heating- and cooling rates:
0.01 K/min to 50 K/min -
Laser pulse energy:
up to 18 J/pulse, (adjustable power) -
Measuring range:
0.01 mm2/s to 1000 mm2/s (thermal diffusivity) -
Measuring range:
0.1 W/mK to 2000 W/mK (thermal conductivity) -
Sample dimensions:
10 mm to 25.4 mm diameter (also 8x8 mm and 10x10 mm, square) 0.1 mm to 6 mm thickness - Sample holder: SiC, graphite
Liquid metal holder: sapphire
Sample holder for liquids: platinum -
Atmosphere:
inert, oxidizing, reducing, static, dynamic -
Vacuum-tight assembly
up to 10-2 mbar (1 Pa)
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