The Effect of Sintering Soaking Time on Microstructural and Properties of CaCu3Mn4012System


The synthesis of CaCu~n4012 (CCMO) has been accomplished via solid-state reaction. The mixture was calcined at 850 DC for 12 hours. Temperature of 1090 °c has been chosen with 6 differ soaking time ranging from 1 hour to 24 hours. The CCMO formation was confirmed using X-ray diffraction (XRD). The microstructure analysis was carried out using field emission scanning electron microscopy (FESEM), while electrical properties have been studied using AutoLab POSTAT 30 Frequency Analyser. Results shows that differ soaking time for sintering introduce unique properties for CCMO. Microstructural analysis reveal that soaking time more than 12 hours produce grains with almost uniform shape. The physical densification of the sintered pellets promotes the creation of new conduction channels and increase of intergrain effective area for transport current under conductivity properties. Results for bulk conductivity vary from 0.2148 x 10-4to 0.5825 X 10-4Stcm. Keywords: CaCu3Mil4012'solid-state reaction, bulk conductivity. A.R. Mohd Warikh1, A.Z. Ahmad Zahirani2, S.D. Hutagalung2, A. Zainal Ahmad2 IDepartment of Engineering Material, Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Locked Backed 1200, Ayer Keroh, 75450 Melak, Malaysia. 2 School of Materials and Mineral Resources Engineering, Engineering Campus,University Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia