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Laser Flash Analysis
Laser Flash Analysis
LINSEIS LFA L51
LINSEIS LFA L51
Laser flash analysis uses a short pulse to heat one side of a sample. An infrared detector records the temperature rise on the other side to determine thermal diffusivity (α).
Thermal conductivity requires separate specific heat capacity (Cp) and density (ρ) data:
λ(T) = α(T) × Cp(T) × ρ(T)
Ask the lab about the PerkinElmer DSC 8000 (Cp) and AccuPyc (ρ) if thermal conductivity is needed.
Measurement scope
Measurement scope
Thermal diffusivity of solid samples. Powders, pastes and layered materials require compatible modules or fixtures. Isothermal and temperature-dependent measurements are available; vacuum testing depends on the instrument configuration.
Key specifications
Key specifications
Temperature: 25–500 °C (LT configuration).
Thermal diffusivity: 0.01–2000 mm²/s; accuracy ±2.4%; repeatability ±1.9%.
Infrared detector: InSb at or above room temperature, or MCT over 25–500 °C.
Samples: circular Ø3, Ø6 or Ø12.7 mm, or square 6 × 6 mm; thickness 1–5 mm. In-plane circular samples: Ø10.7 mm; thickness 0.5–1 mm.
Vacuum environment: up to 10⁻⁵ mbar, subject to configuration.
Requesting a test
Requesting a test
Provide the material name and main composition, sample dimensions and thickness, target temperature range, test environment and requested thermal diffusivity data (α).
Samples should be flat, polished, dry and free of oil. A graphite coating may be needed according to the material's absorption and emission properties.
Unknown, flammable, volatile, toxic, corrosive or highly reactive materials must be reviewed in advance. Only trained personnel operate the instrument. Confirm the fixture, testing procedure and fees with the laboratory before submitting samples.
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