| Author Name | Affiliation | Postcode | | Swagatika Mishra | Department of Mechanical Engineering,Veer Surendra Sai University of Technology,Burla | 768018 | | Punyapriya Mishra* | Department of Mechanical Engineering,Veer Surendra Sai University of Technology,Burla | 768018 | | Punyatoya Mishra | Department of Physics,Parala Maharaja Engineering College,Berhampur | 761003 | | Dinesh Kumar Mishra | Department of Metallurgical and Materials Engineering,Veer Surendra Sai University of Technology,Burla | 768018 | | Krushna Prasad Shadangi | Department of Chemical Engineering,Veer Surendra Sai University of Technology,Burla | 768018 | | Deepak Kumar Mohapatra | Department of Mechanical Engineering,Veer Surendra Sai University of Technology,Burla | 768018 |
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| Abstract: |
| In the current study, the calcium copper titanate (CCTO)/epoxy, barium titanate (BT)/epoxy and CCTO-BT/epoxy composite samples with variable volume fractions of CCTO and BT are fabricated using hand lay-up and compression moulding process. The composite samples are characterized for the frequency dependence on dielectric properties, conductivity, impedance spectroscopy and electrical modulus. X-ray diffraction (XRD) representation of CCTO-BT/epoxy composite samples confirmed the presence of both CCTO and BT ceramic samples separately. The dielectric characteristics of hybrid CCTO-BT/epoxy composite samples with CCTO: BT ratio of 40:60, 60:40, and 50:50 was found relatively better than those of single ceramic filler reinforced epoxy composites. AC conductivity analysis shows improvement in the results of hybrid filler-filled CCTO-BT/epoxy composites in comparison with single filler-filled epoxy composite. 50:50 CCTO-BT/epoxy composite shows the best AC conductivity value of ~ ohm-1?m-1 at a higher frequency of 1 MHz. The impedance analysis confirms the higher insulating properties for hybrid 40:60 and 60:40 CCTO-BT/epoxy composites with respect to the single and other hybrid ceramic epoxy composites. The analysis suggests the hybrid CCTO-BT/epoxy composites to be adopted as a potential dielectric material for energy storage devices and other electronic applications. |
| Key words: ceramic filler dielectric characterization hybrid Composite AC conductivity impedance analysis |
| DOI：10.11916/j.issn.1005-9113.2023012 |
| Clc Number:TQ174,TB332 |
| Fund: |
