ASTM D6744 Determination of the Thermal Conductivity of Anode Carbons 

Scope:

The ASTM D6744 test method is important in determining a carbon material’ thermal conductivity and thermal resistance. This method provides a standard for the determination of the thermal properties of carbon materials along with their reliability and normal conductance level. This helps specify their application and use. Quality control and research can be conducted with the aid of the results obtained.

Procedure:

The ASTM D6744 test specimen is placed between the plan with a Heat Flux Transducer (HFT), and a specific temperature is applied. The temperature is measured by using temperature sensors and the output of HFT is detected. There exists a proportional relationship between the output voltage and the heat flow through the specimen. The contact resistance is made reproducible by obtaining proportionality by measuring the specimens with known thermal resistance. The operating and calibration procedures vary for different devices.

Video 01: Thermal Conductivity

Specimen Size:

The specimen size is taken as per the requirements. 25 µm thick specimens are taken for the performance of the ASTM D6744 test. The diameter of the specimen should be 50.8 ± 0.25 mm.

Data:

The Fourier heat Rois calculated by applying the equation. The polynomial relationship between N and temperature is set up by combining the equations where f1 (T) is the temperature-dependent value of N, and f2 (T) is the temperature-dependent value of  Ro.

Conclusion:

The ASTM D6744 test method is important in determining carbon materials’ thermal conductivity and thermal resistance.