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首页> 外文期刊>International Journal of Electrochemical Science >Effect of Al2O3 Particle Concentration on the Characteristics of Microarc Oxidation Coatings Formed on Pure Titanium
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Effect of Al2O3 Particle Concentration on the Characteristics of Microarc Oxidation Coatings Formed on Pure Titanium

机译：Al 2 O 3 颗粒浓度对纯钛微弧氧化膜特性的影响

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摘要

Microarc oxidation coatings were successfully fabricated on pure titanium substrates by microarcoxidation (MAO) in electrolytes with Al2O3 particles of varying concentrations, which ranged from 0to 4 g·L-1 (0, 1, 2, 3, 4 g·L-1). The voltage versus time curves, surface and cross-sectionalmorphologies, thicknesses, microhardnesses, phase compositions, coating adhesive strengths, thermalshock resistances and polarization curves of MAO coatings were investigated. The results revealed thatthe voltage, the microhardness and the thickness of the coatings increased with the addition of Al2O3particles. Both the number and size of sintered discs on the coating surface increased gradually withthe ascending concentration of Al2O3 particles. The XRD results indicated that the MAO coatingsmainly consisted of α-Al2O3, SiO2 and rutile. The corrosion resistance of the coatings was improved,while the addition of Al2O3 particles had less effect on the adhesive strength of the MAO coatings. Thestudy revealed that an appropriate addition of Al2O3 particles in electrolytes is beneficial to promotethe performance of coatings.
机译：通过在具有不同浓度范围为0至4 g·L-1（0、1、2、3、4 g·L-1）的Al2O3颗粒的电解质中进行微弧氧化（MAO），在纯钛基底上成功制备了微弧氧化涂层。 。研究了MAO涂层的电压-时间曲线，表面和截面形态，厚度，显微硬度，相组成，涂层粘合强度，抗热震性和极化曲线。结果表明，随着Al2O3颗粒的加入，涂层的电压，显微硬度和厚度增加。随着Al2O3颗粒浓度的增加，涂层表面烧结盘的数量和尺寸均逐渐增加。 XRD结果表明，MAO涂层主要由α-Al2O3，SiO2和金红石组成。改善了涂层的耐腐蚀性，而添加Al2O3颗粒对MAO涂层的粘合强度影响较小。研究表明，在电解质中适当添加Al2O3颗粒有利于提高涂层的性能。

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