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微弧氧化对阳极氧化微结构和介电性质的影响

Liyang Qin¹, Zhongyou Fu¹, Lin Liu²

¹Key Laboratory of Soft Chemistry and Functional Materials of Education Ministry, Nanjing University of Science and Technology, Nanjing, 210094, China.

Scientific reports

|October 10, 2024

概括

微弧氧化 (MAO) 在阳极氧化膜中产生更大的孔径,与传统阳极氧化 (CAO) 相比,显著减少泄漏电流,以提高介电性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
表面工程是什么?表面工程是什么?

背景情况:

阳极膜对于电解电容器至关重要.
提高介电性能对于电容器的效率和寿命至关重要.
传统的阳极氧化 (CAO) 在薄膜结构和特性方面存在局限性.

研究的目的:

通过微弧氧化 (MAO) 和CAO产生的阳极氧化膜的微结构和介电性质进行比较.
评估MAO在电容器应用中增强介电性能方面的潜力.
了解薄膜微观结构与电气性能之间的关系.

主要方法:

使用MAO和CAO技术制造阳极氧化膜.
氧化物薄膜的微结构分析以描述孔径大小和分布.
在不同的电解质条件下测量介电性质,特别是泄漏电流.

主要成果:

与CAO膜相比,MAO治疗导致氧化膜的密度更高,内部孔更大.
在MAO膜中形成较大的孔隙是由于氧气泡的产生和等离子体火花活动.
对四种不同的电解质 (Y1-Y4) 进行MAO处理的薄膜,观察到漏电流的显著减少,与CAO相比减少了56%至74%.

结论:

氧化 (MAO) 是一种生产具有增强介电性质的阳极氧化薄膜的优质方法.
修改后的微观结构,以更大的孔隙为特征,直接有助于减少泄漏电流.
经MAO处理的薄膜在改善电解电容器的性能方面显示出显著的前景.

关键词:

传统的阳极氧化方式.电子电流电子电流电子电流微弧氧化过程中的微弧氧化.微观结构的微观结构

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