Application of wet process plating and ion plating.

Yokoyama, Fumio

doi:10.4139/sfj.40.1087

Cited by 1 publication

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“…The so-called pulse anodizing, a type of alternating current, gained great attention over the last decades. 7,8 However, the understanding of influences of pulse voltage and the resulting oxide properties is often empirical. Particularly, the interdependencies between the applied pulse parameters and the relaxation time constants of mass, heat and charge transport are hardly discussed to date.…”

Section: Introductionmentioning

confidence: 99%

Development of the local proton concentration during pulse anodizing

Lämmel

Heubner

Schneider

et al. 2018

Surface & Interface Analysis

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The literature describes various beneficial effects of the pulse anodizing of aluminum related to the corrosion resistance, hardness, and electronic properties of the oxide layer, the thermal impact during the anodizing process as well as reduced energy consumption. In spite of the considerable improvements, the understanding of basic mechanisms and the specific impact of the applied pulse parameters are still under discussion. Herein, the local development of the electrolyte concentration during pulse anodizing in sulfuric acid is investigated by means of finite element computations. The impact of the thickness of the porous oxide, the applied current density, and the pulse frequency are examined systematically. The results suggest that the electrolyte concentration at the oxide/electrolyte interface can be effectively controlled by applying tailored pulse parameters.

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Section: Introductionmentioning

confidence: 99%