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Influence of Laser Colour Marking on the Corrosion Properties of Low Alloyed Ti

机译：激光打标对低合金钛腐蚀性能的影响

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摘要

In the field of surface treatment, laser colour marking can be used to produce coloured marks on the surfaces of metals. Laser colour markings can be applied to various materials, but on titanium alloys a wide spectra of vivid colours can be achieved. This study presents an analysis of the corrosion properties of laser treated surfaces that were exposed to aggressive environments. Different samples were prepared with laser light of various power intensities and processing speeds. The samples were prepared on low alloyed Ti. Electrochemical, spectroscopic and microstructural analyses were conducted in order to study the properties of the laser treated surfaces. Corrosion testing showed different effects of laser power and production speed on the properties of the laser treated surfaces. It was shown that a high intensity and slow processing rate affect the surfaces by forming oxides that are relatively stable in a corrosive environment of 0.1 M NaCl. Spectroscopic investigations including scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses showed the differences in chemical structure of the surface layer formed after laser treatment. Similarly, microstructural investigations showed different effects on the surface and sub-surface layer of the laser treated samples.
机译：在表面处理领域，可以使用激光彩色标记在金属表面上产生彩色标记。激光颜色标记可以应用于各种材料，但是在钛合金上可以实现多种鲜艳的颜色。这项研究对暴露于侵蚀性环境中的激光处理表面的腐蚀性能进行了分析。用各种功率强度和处理速度的激光制备了不同的样品。样品是在低合金Ti上制备的。为了研究经激光处理的表面的性质，进行了电化学，光谱和显微结构分析。腐蚀测试表明，激光功率和生产速度对激光处理过的表面的性能有不同的影响。结果表明，高强度和较慢的加工速度会通过形成在0.1 M NaCl腐蚀性环境中相对稳定的氧化物来影响表面。包括扫描电子显微镜（SEM）和X射线光电子能谱（XPS）分析在内的光谱研究表明，激光处理后形成的表面层的化学结构存在差异。同样，微观结构研究表明，对激光处理过的样品的表面和亚表层有不同的影响。

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