Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites
Abstract Epoxy nano Al composites were prepared using epoxyresin, hardener, and Al nanoparticles with required proportions and irradiated with gamma rays of required dosage. Surface potential measurements and space charge studies were employed to investigate the charge trapping properties of gamma‐i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-02-01
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| Series: | SPE Polymers |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/pls2.10028 |
| _version_ | 1811257927924711424 |
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| author | Naresh Chillu Ramanujam Sarathi Rengaswamy Jayaganthan |
| author_facet | Naresh Chillu Ramanujam Sarathi Rengaswamy Jayaganthan |
| author_sort | Naresh Chillu |
| collection | DOAJ |
| description | Abstract Epoxy nano Al composites were prepared using epoxyresin, hardener, and Al nanoparticles with required proportions and irradiated with gamma rays of required dosage. Surface potential measurements and space charge studies were employed to investigate the charge trapping properties of gamma‐irradiated specimens. The surface potential decay with DC voltage was sluggish for the gamma‐aged specimens irrespective of the polarity of the applied voltage. Trap distribution characteristics showed that trapped charge carriers occupy the energy range from 0.7 to 0.9 eV and revealed the existence of deep traps for the gamma‐irradiated samples. The mean lifetime and trap depth have followed the direct correlation. Space charge accumulation increased with the dosage of gamma irradiation but did not vary when space charge accumulation reached saturation. Space charge decay rate as well as saturated space charge density is higher for gamma‐aged specimens vs. unaged counterparts. Deep traps inhibited the space charge decay process. Permittivity and loss tangent measurements indicate that dielectric properties were altered with nanofiller inclusions and gamma irradiation. |
| first_indexed | 2024-04-12T18:05:04Z |
| format | Article |
| id | doaj.art-483de2e1caeb4d1caaf3ae56cc520587 |
| institution | Directory Open Access Journal |
| issn | 2690-3857 |
| language | English |
| last_indexed | 2024-04-12T18:05:04Z |
| publishDate | 2021-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | SPE Polymers |
| spelling | doaj.art-483de2e1caeb4d1caaf3ae56cc5205872022-12-22T03:22:00ZengWileySPE Polymers2690-38572021-02-0121384910.1002/pls2.10028Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocompositesNaresh Chillu0Ramanujam Sarathi1Rengaswamy Jayaganthan2Department of Electrical Engineering Indian Institute of Technology Madras Chennai IndiaDepartment of Electrical Engineering Indian Institute of Technology Madras Chennai IndiaDepartment of Engineering Design Indian Institute of Technology Madras Chennai IndiaAbstract Epoxy nano Al composites were prepared using epoxyresin, hardener, and Al nanoparticles with required proportions and irradiated with gamma rays of required dosage. Surface potential measurements and space charge studies were employed to investigate the charge trapping properties of gamma‐irradiated specimens. The surface potential decay with DC voltage was sluggish for the gamma‐aged specimens irrespective of the polarity of the applied voltage. Trap distribution characteristics showed that trapped charge carriers occupy the energy range from 0.7 to 0.9 eV and revealed the existence of deep traps for the gamma‐irradiated samples. The mean lifetime and trap depth have followed the direct correlation. Space charge accumulation increased with the dosage of gamma irradiation but did not vary when space charge accumulation reached saturation. Space charge decay rate as well as saturated space charge density is higher for gamma‐aged specimens vs. unaged counterparts. Deep traps inhibited the space charge decay process. Permittivity and loss tangent measurements indicate that dielectric properties were altered with nanofiller inclusions and gamma irradiation.https://doi.org/10.1002/pls2.10028and surface potentialcharge trapdielectric propertiesgamma‐irradiationnanocompositesspace charge |
| spellingShingle | Naresh Chillu Ramanujam Sarathi Rengaswamy Jayaganthan Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites SPE Polymers and surface potential charge trap dielectric properties gamma‐irradiation nanocomposites space charge |
| title | Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites |
| title_full | Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites |
| title_fullStr | Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites |
| title_full_unstemmed | Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites |
| title_short | Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites |
| title_sort | impact of gamma irradiation on space charge and charge trap characteristics of al epoxy nanocomposites |
| topic | and surface potential charge trap dielectric properties gamma‐irradiation nanocomposites space charge |
| url | https://doi.org/10.1002/pls2.10028 |
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