Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy
To decrease energy consumption and improve the performance of micro-arc oxidation (MAO) films on 6063 Al alloy, a policy of K<sub>2</sub>TiF<sub>6</sub> additive and electrolyte temperature control was adapted. The specific energy consumption relied on the K<sub>2</s...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-02-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/5/1830 |
| _version_ | 1797614986911023104 |
|---|---|
| author | Xiaomeng Xie Erhui Yang Ziying Zhang Wu Wei Dong Li Xiaolian Zhao Ruixia Yang Weizhou Li |
| author_facet | Xiaomeng Xie Erhui Yang Ziying Zhang Wu Wei Dong Li Xiaolian Zhao Ruixia Yang Weizhou Li |
| author_sort | Xiaomeng Xie |
| collection | DOAJ |
| description | To decrease energy consumption and improve the performance of micro-arc oxidation (MAO) films on 6063 Al alloy, a policy of K<sub>2</sub>TiF<sub>6</sub> additive and electrolyte temperature control was adapted. The specific energy consumption relied on the K<sub>2</sub>TiF<sub>6</sub> additive and more particularly on the electrolyte temperatures. Scanning electron microscopy demonstrates that electrolytes with 5 g/L K<sub>2</sub>TiF<sub>6</sub> can effectively seal the surface pores and increase the thickness of the compact inner layer. Spectral analysis shows that the surface oxide coating consists of γ-Al<sub>2</sub>O<sub>3</sub> phase. Following 336 h of the total immersion process, the impedance modulus of the oxidation film, prepared at 25 °C (Ti5-25), remained 1.08 × 10<sup>6</sup> Ω·cm<sup>2</sup>. Moreover, Ti5-25 has the best performance/energy-consumption ratio with a compact inner layer (2.5 ± 0.3 μm). This research found that the time of the big arc stage increased with the temperature, resulting in producing more internal defects in the film. In this work, we employ a dual-track strategy of additive and temperature providing an avenue to reduce the energy consumption of MAO on alloys. |
| first_indexed | 2024-03-11T07:20:04Z |
| format | Article |
| id | doaj.art-e37258952bda437aba0fd7bdbf72513a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T07:20:04Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e37258952bda437aba0fd7bdbf72513a2023-11-17T08:03:28ZengMDPI AGMaterials1996-19442023-02-01165183010.3390/ma16051830Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum AlloyXiaomeng Xie0Erhui Yang1Ziying Zhang2Wu Wei3Dong Li4Xiaolian Zhao5Ruixia Yang6Weizhou Li7School of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaSchool of Resources Environment and Materials, Guangxi University, Nanning 530004, ChinaTo decrease energy consumption and improve the performance of micro-arc oxidation (MAO) films on 6063 Al alloy, a policy of K<sub>2</sub>TiF<sub>6</sub> additive and electrolyte temperature control was adapted. The specific energy consumption relied on the K<sub>2</sub>TiF<sub>6</sub> additive and more particularly on the electrolyte temperatures. Scanning electron microscopy demonstrates that electrolytes with 5 g/L K<sub>2</sub>TiF<sub>6</sub> can effectively seal the surface pores and increase the thickness of the compact inner layer. Spectral analysis shows that the surface oxide coating consists of γ-Al<sub>2</sub>O<sub>3</sub> phase. Following 336 h of the total immersion process, the impedance modulus of the oxidation film, prepared at 25 °C (Ti5-25), remained 1.08 × 10<sup>6</sup> Ω·cm<sup>2</sup>. Moreover, Ti5-25 has the best performance/energy-consumption ratio with a compact inner layer (2.5 ± 0.3 μm). This research found that the time of the big arc stage increased with the temperature, resulting in producing more internal defects in the film. In this work, we employ a dual-track strategy of additive and temperature providing an avenue to reduce the energy consumption of MAO on alloys.https://www.mdpi.com/1996-1944/16/5/1830micro-arc oxidationdipotassium titanium hexafluorideelectrolyte temperatureenergy-consumptioncorrosion resistance |
| spellingShingle | Xiaomeng Xie Erhui Yang Ziying Zhang Wu Wei Dong Li Xiaolian Zhao Ruixia Yang Weizhou Li Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy Materials micro-arc oxidation dipotassium titanium hexafluoride electrolyte temperature energy-consumption corrosion resistance |
| title | Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy |
| title_full | Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy |
| title_fullStr | Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy |
| title_full_unstemmed | Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy |
| title_short | Effects of K<sub>2</sub>TiF<sub>6</sub> and Electrolyte Temperatures on Energy Consumption and Properties of MAO Coatings on 6063 Aluminum Alloy |
| title_sort | effects of k sub 2 sub tif sub 6 sub and electrolyte temperatures on energy consumption and properties of mao coatings on 6063 aluminum alloy |
| topic | micro-arc oxidation dipotassium titanium hexafluoride electrolyte temperature energy-consumption corrosion resistance |
| url | https://www.mdpi.com/1996-1944/16/5/1830 |
| work_keys_str_mv | AT xiaomengxie effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT erhuiyang effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT ziyingzhang effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT wuwei effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT dongli effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT xiaolianzhao effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT ruixiayang effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy AT weizhouli effectsofksub2subtifsub6subandelectrolytetemperaturesonenergyconsumptionandpropertiesofmaocoatingson6063aluminumalloy |