Study of the Effect of Current Pulse Frequency on Ti-6Al-4V Alloy Coating Formation by Micro Arc Oxidation

被引：48

作者：

Sobolev, Alexander ^{[1
]}

Kossenko, Alexey ^{[1
]}

Borodianskiy, Konstantin ^{[1
]}

机构：

[1] Ariel Univ, Dept Chem Engn, IL-40700 Ariel, Israel

来源：

MATERIALS | 2019年 / 12卷 / 23期

关键词：

micro arc oxidation; current pulse frequency; Ti-6Al-4V alloy; titanium oxide; corrosion resistance; PLASMA ELECTROLYTIC OXIDATION; CORROSION-RESISTANCE; PURE TITANIUM; PEO COATINGS; DUTY CYCLE; TI6AL4V; TI;

D O I：

10.3390/ma12233983

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The micro arc oxidation (MAO) process has been applied to produce ceramic oxide coating on Ti-6Al-4V alloy. The MAO process was carried out at the symmetric bipolar square pulse in electrolyte containing Na2CO3 and Na2SiO3. The effect of current frequency on the surface morphology, the chemical and the phase compositions as well as the corrosion resistance was examined. Morphology and cross-sectional investigation by electron microscopy evaluated more compacted and less porous coating produced by high current frequency (1000 Hz). This alloy also exhibited a high corrosion resistance in comparison with the untreated alloy. Additionally, the alloy subjected to MAO treatment by a current frequency of 1000 Hz showed a higher corrosion resistance in comparison with alloys obtained by lower current frequencies. This behavior was attributed to more compacted and less porous morphology of the coating.

引用

页数：11

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