TB5钛合金表面的激光打标着色性能及应用研究

目的 通过TB5钛合金表面激光着色后不同的颜色表面结构及成分研究，探讨颜色变化的机理，为同类金属着色控制提供参考。方法 在钛合金表面使用纳秒激光诱导着色，通过改变激光器参数在材料表面生成不同颜色，使用扫描电镜对不同颜色的表面结构及成分表征，探讨颜色变化的机理，再使用接触角测量仪探讨不同颜色表面润湿性的变化，为其应用奠定基础。结果 实验表明，改变激光参数后实验得到蓝、紫、黄色等多种颜色，未着色前的钛合金表面接触角为46.77°，呈亲水性，着色后得到的颜色样本表现为疏水性。结论 在TB5钛合金表面通过激光打标着色技术得到了不同颜色样本与处理后金属表面润湿性之间的关系，证明了通过调节激光参数集可同时改变金属的着色效果以及润湿性。

Coloring Performance and Application of Laser Marking on Surface of TB5 Titanium Alloy

The work aims to study the color surface structure and composition of the TB5 titanium alloy surface following laser coloring, and explore the mechanism of color change of alloy surface to provide a reference for similar metal coloring control. A range of colors were generated on the material surface by nanosecond laser-induced coloring of titanium alloy and varying the laser parameters. The surface structure, composition and surface characteristics of these colors were characterized using scanning electron microscopy to elucidate the underlying mechanisms of color change. Furthermore, the surface wettability of these colors was explored with a contact angle meter, laying the foundation for their potential applications. The experiments demonstrated that following alterations to the laser parameters, a spectrum of colors was observed, including blue, purple and yellow. Prior to coloring, the contact angle of the titanium alloy surface was found to be 46.77°. This indicated that the alloy was hydrophilic. However, the color samples obtained after coloring exhibited hydrophobicity. The relationship between different color samples and the wettability of the treated metal surface is obtained by the laser marking and coloring technique on the surface of TB5 titanium alloy. This demonstrates the possibility of tailoring the coloring as well as the wettability of the metal at the same time by adjusting the set of laser parameters.