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Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes
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| Zeitschriftentitel: | Materials |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Materials, 12, 2019, 14, S. 2286 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
MDPI AG
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| Schlagwörter: |
| author_facet |
Yang, Kai Huang, Haisong Chen, Jiadui Cao, Biao Yang, Kai Huang, Haisong Chen, Jiadui Cao, Biao |
|---|---|
| author |
Yang, Kai Huang, Haisong Chen, Jiadui Cao, Biao |
| spellingShingle |
Yang, Kai Huang, Haisong Chen, Jiadui Cao, Biao Materials Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes General Materials Science |
| author_sort |
yang, kai |
| spelling |
Yang, Kai Huang, Haisong Chen, Jiadui Cao, Biao 1996-1944 MDPI AG General Materials Science http://dx.doi.org/10.3390/ma12142286 <jats:p>Micro-arc discharge events and dielectric breakdown of oxide films play an important role in the formation process of plasma electrolytic oxidation coating. Single pulse anodization of micro-electrodes was employed to study the discharge behavior and dielectric breakdown of oxide films deposited on aluminum in an alkaline silicate electrolyte. Voltage and current waveforms of applied pulses were measured and surface morphology of micro-electrodes was characterized from images obtained using scanning electron microscope (SEM). A feasible identification method for the critical breakdown voltage of oxide film was introduced. Different current transients of voltage pulses were obtained, depending on applied pulse voltage and duration. In addition, the active capacitive effect and complex non-linear nature of plasma electrolytic oxidation process is confirmed using dynamic electrical characteristic curves. A good correlation between the pulse parameters and shape of discharge channels was observed. Circular opened pores were found to close with increasing potential and pulse width. Finally, the characteristic parameters of a single discharge event were estimated.</jats:p> Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes Materials |
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| title |
Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_unstemmed |
Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_full |
Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_fullStr |
Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_full_unstemmed |
Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_short |
Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_sort |
discharge behavior and dielectric breakdown of oxide films during single pulse anodizing of aluminum micro-electrodes |
| topic |
General Materials Science |
| url |
http://dx.doi.org/10.3390/ma12142286 |
| publishDate |
2019 |
| physical |
2286 |
| description |
<jats:p>Micro-arc discharge events and dielectric breakdown of oxide films play an important role in the formation process of plasma electrolytic oxidation coating. Single pulse anodization of micro-electrodes was employed to study the discharge behavior and dielectric breakdown of oxide films deposited on aluminum in an alkaline silicate electrolyte. Voltage and current waveforms of applied pulses were measured and surface morphology of micro-electrodes was characterized from images obtained using scanning electron microscope (SEM). A feasible identification method for the critical breakdown voltage of oxide film was introduced. Different current transients of voltage pulses were obtained, depending on applied pulse voltage and duration. In addition, the active capacitive effect and complex non-linear nature of plasma electrolytic oxidation process is confirmed using dynamic electrical characteristic curves. A good correlation between the pulse parameters and shape of discharge channels was observed. Circular opened pores were found to close with increasing potential and pulse width. Finally, the characteristic parameters of a single discharge event were estimated.</jats:p> |
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| author | Yang, Kai, Huang, Haisong, Chen, Jiadui, Cao, Biao |
| author_facet | Yang, Kai, Huang, Haisong, Chen, Jiadui, Cao, Biao, Yang, Kai, Huang, Haisong, Chen, Jiadui, Cao, Biao |
| author_sort | yang, kai |
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| description | <jats:p>Micro-arc discharge events and dielectric breakdown of oxide films play an important role in the formation process of plasma electrolytic oxidation coating. Single pulse anodization of micro-electrodes was employed to study the discharge behavior and dielectric breakdown of oxide films deposited on aluminum in an alkaline silicate electrolyte. Voltage and current waveforms of applied pulses were measured and surface morphology of micro-electrodes was characterized from images obtained using scanning electron microscope (SEM). A feasible identification method for the critical breakdown voltage of oxide film was introduced. Different current transients of voltage pulses were obtained, depending on applied pulse voltage and duration. In addition, the active capacitive effect and complex non-linear nature of plasma electrolytic oxidation process is confirmed using dynamic electrical characteristic curves. A good correlation between the pulse parameters and shape of discharge channels was observed. Circular opened pores were found to close with increasing potential and pulse width. Finally, the characteristic parameters of a single discharge event were estimated.</jats:p> |
| doi_str_mv | 10.3390/ma12142286 |
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| imprint_str_mv | MDPI AG, 2019 |
| institution | DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229 |
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| mega_collection | MDPI AG (CrossRef) |
| physical | 2286 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| publisher | MDPI AG |
| record_format | ai |
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| series | Materials |
| source_id | 49 |
| spelling | Yang, Kai Huang, Haisong Chen, Jiadui Cao, Biao 1996-1944 MDPI AG General Materials Science http://dx.doi.org/10.3390/ma12142286 <jats:p>Micro-arc discharge events and dielectric breakdown of oxide films play an important role in the formation process of plasma electrolytic oxidation coating. Single pulse anodization of micro-electrodes was employed to study the discharge behavior and dielectric breakdown of oxide films deposited on aluminum in an alkaline silicate electrolyte. Voltage and current waveforms of applied pulses were measured and surface morphology of micro-electrodes was characterized from images obtained using scanning electron microscope (SEM). A feasible identification method for the critical breakdown voltage of oxide film was introduced. Different current transients of voltage pulses were obtained, depending on applied pulse voltage and duration. In addition, the active capacitive effect and complex non-linear nature of plasma electrolytic oxidation process is confirmed using dynamic electrical characteristic curves. A good correlation between the pulse parameters and shape of discharge channels was observed. Circular opened pores were found to close with increasing potential and pulse width. Finally, the characteristic parameters of a single discharge event were estimated.</jats:p> Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes Materials |
| spellingShingle | Yang, Kai, Huang, Haisong, Chen, Jiadui, Cao, Biao, Materials, Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes, General Materials Science |
| title | Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_full | Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_fullStr | Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_full_unstemmed | Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_short | Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| title_sort | discharge behavior and dielectric breakdown of oxide films during single pulse anodizing of aluminum micro-electrodes |
| title_unstemmed | Discharge Behavior and Dielectric Breakdown of Oxide Films during Single Pulse Anodizing of Aluminum Micro-Electrodes |
| topic | General Materials Science |
| url | http://dx.doi.org/10.3390/ma12142286 |