Abstract
In order to eliminate the temperature difference between center measurement points and surface temperature of the material samples with low thermal conductivity, this paper introduces a new hot airflow double-sided heating method for sample, and describes its principle, application, and the impact of the existing and novel methods on the measurement results of spectral emissivity. Also, we analyze and compare the results of two different samples obtained with these two heating methods. The new method for material samples with low thermal conductivity has outstanding advantages and potential applications.
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