In this paper, a quaternary system of Mn0.43Ni0.9CuFe0.67O4 negative temperature coefficient (NTC) thermistor ceramic prepared by solid/solid reaction was sintered by microwave and conventional method, respectively. To characterize the sinterability of the samples, the densification parameter, porosity and grain size distribution of the bulk were determined. The crystal structure, phase compositions, morphology and impedance of the samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS) and impedance analysis. The experimental results confirmed that the sinterability and electrical properties of ceramics were homogenously improved by microwave sintering.
CAS, Xinjiang Key Lab Elect Informat Mat & Devices, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Jin Xianjing,Chang Aimin,Zhang Huimin,et al. a comparison study of sinterability and electrical properties for microwave and conventional sintered mn0.43ni0.9cufe0.67o4 ceramics[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2010,26(4):344-350.