Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass
The influence of sintering time on the microstructure and electrical properties of ZnO-CoO-SLS (soda lime silica) glass varistor based ceramics has been investigated. With increased sintering time, the density of the sintered pellets increased from 5.060 to 5.644 g/cm3 resulting in an increase of th...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
International Institute for the Science of Sintering
2021
|
| _version_ | 1825937787372699648 |
|---|---|
| author | Ismail, Nur Quratul Aini Sa’at, Nor Kamilah Mohd Zaid, Mohd Hafiz |
| author_facet | Ismail, Nur Quratul Aini Sa’at, Nor Kamilah Mohd Zaid, Mohd Hafiz |
| author_sort | Ismail, Nur Quratul Aini |
| collection | UPM |
| description | The influence of sintering time on the microstructure and electrical properties of ZnO-CoO-SLS (soda lime silica) glass varistor based ceramics has been investigated. With increased sintering time, the density of the sintered pellets increased from 5.060 to 5.644 g/cm3 resulting in an increase of the nonlinear coefficient and barrier height of the ZnO-CoOSLS glass varistor ceramics from 6.742 to 8.252 and 0.846 to 0.955 eV, respectively. The breakdown voltage is inversely proportional to the leakage current. The breakdown voltage increases from 183.7 to 278.6 V/cm and the leakage current decreases from 5.832 to 4.324 μA/cm2 as the sintering time is increased from 60 to 150 minutes but as the increase sintering time of 150 minutes their value decreases to 222.8 V/cm and increases to 5.078 μA/cm2. The high nonlinearity of 7.366 with lowest leakage current of 4.324 μA/cm2 has been achieved from the varistor sintered at 150 minutes, breakdown voltage of 278.6 V/cm and barrier height of 0.954 eV. |
| first_indexed | 2024-03-06T11:04:49Z |
| format | Article |
| id | upm.eprints-96937 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-03-06T11:04:49Z |
| publishDate | 2021 |
| publisher | International Institute for the Science of Sintering |
| record_format | dspace |
| spelling | upm.eprints-969372023-04-19T04:07:26Z http://psasir.upm.edu.my/id/eprint/96937/ Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass Ismail, Nur Quratul Aini Sa’at, Nor Kamilah Mohd Zaid, Mohd Hafiz The influence of sintering time on the microstructure and electrical properties of ZnO-CoO-SLS (soda lime silica) glass varistor based ceramics has been investigated. With increased sintering time, the density of the sintered pellets increased from 5.060 to 5.644 g/cm3 resulting in an increase of the nonlinear coefficient and barrier height of the ZnO-CoOSLS glass varistor ceramics from 6.742 to 8.252 and 0.846 to 0.955 eV, respectively. The breakdown voltage is inversely proportional to the leakage current. The breakdown voltage increases from 183.7 to 278.6 V/cm and the leakage current decreases from 5.832 to 4.324 μA/cm2 as the sintering time is increased from 60 to 150 minutes but as the increase sintering time of 150 minutes their value decreases to 222.8 V/cm and increases to 5.078 μA/cm2. The high nonlinearity of 7.366 with lowest leakage current of 4.324 μA/cm2 has been achieved from the varistor sintered at 150 minutes, breakdown voltage of 278.6 V/cm and barrier height of 0.954 eV. International Institute for the Science of Sintering 2021 Article PeerReviewed Ismail, Nur Quratul Aini and Sa’at, Nor Kamilah and Mohd Zaid, Mohd Hafiz (2021) Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass. Science of Sintering, 53 (4). pp. 1-10. ISSN 0350-820X; ESSN: 1820-7413 http://147.91.97.5/index.php/scisint/article/view/887 10.2298/SOS2104509I |
| spellingShingle | Ismail, Nur Quratul Aini Sa’at, Nor Kamilah Mohd Zaid, Mohd Hafiz Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass |
| title | Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass |
| title_full | Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass |
| title_fullStr | Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass |
| title_full_unstemmed | Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass |
| title_short | Effect of sintering time on microstructure and electrical properties of varistor ceramics ZnO-CoO-SLS glass |
| title_sort | effect of sintering time on microstructure and electrical properties of varistor ceramics zno coo sls glass |
| work_keys_str_mv | AT ismailnurquratulaini effectofsinteringtimeonmicrostructureandelectricalpropertiesofvaristorceramicsznocooslsglass AT saatnorkamilah effectofsinteringtimeonmicrostructureandelectricalpropertiesofvaristorceramicsznocooslsglass AT mohdzaidmohdhafiz effectofsinteringtimeonmicrostructureandelectricalpropertiesofvaristorceramicsznocooslsglass |