Temperature dependence of electrical resistivity of the Al_4SiC_4 sintered bodies prepared by pulse electronic current sintering

摘要

Temperature dependence of the electricla resistivity of the Al_4SiC_4 sintered bodies in the range of 100-1000degC was studied in this paper. Curreten-voltage characteristics of the bodies showed a linear relationship ,and the characteristics have an ohmi cregion. Electrical resistivity,obtained fromthe current-voltage characteristics,exhibited insulation properties,and decreased with the porosity of the bodies. Further,the electrical resistivity varied significantly with temperature.However,any difference in activation energy for electrical resistivity among samples was rarely found despite the different porosity of them. COnsequently,the porosityof the bodies did not affect the temperature dependence of electrical resistivity.