Abstract: Specific heat capacity is an important physical parameter of SiC ceramics, which is directly related to its thermal conductivity and thermal diffusivity. It is an important basis for evaluating its thermal properties. Due to the wide application temperature range of SiC ceramics, which can be up to more than 1 000 ℃, it is necessary to study its specific heat capacity in a wide temperature range. To solve this problem，a drop calorimetry method was used to study the specific heat capacity of SiC ceramics in the range from 400 ℃ to 1 000 ℃. The high-temperature specific heat capacity tester for measuring solid materials was calibrated by using sapphire standard reference material. The results show that the error of specific heat capacity of sapphire standard reference material is less than 2%，which ensures the accuracy of the test equipment. The specific heat capacity of SiC sample increases with the temperature increasing. The measured results are basically consistent with the reference values provided in Refs.\[21-22\]， and the relative deviation is in the range from 1.8% to 2.9%. It shows that the drop calorimetry method has high accuracy in determining the specific heat capacity of SiC material at high temperature，and it is a feasible method to determine the specific heat capacity of SiC material at high temperature in addition to the mixing method.

Key words: SiCceramic, dropcalorimetry, high-temperaturespecificheatcapacity, sapphire