Analysis of machinable structures and their wettability of rotary ultrasonic texturing method
Analysis of machinable structures and their wettability of rotary ultrasonic texturing method
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DOI：
10.3901/cjme.2016.0910.112
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发表时间：
2016-10
影响因子：
4.2
通讯作者：
Shaolin Xu;K. Shimada;M. Mizutani;T. Kuriyagawa
中科院分区：
文献类型：
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作者：
Shaolin Xu;K. Shimada;M. Mizutani;T. Kuriyagawa
在微米或纳米尺度上定制的表面纹理被广泛用于获得所需的功能性能。旋转超声毛化（RUT）技术已被证明是能够制造周期性的微和纳米结构。在本研究中，金刚石工具的几何定义的切削刃设计用于制造不同类型的定制表面纹理使用RUT方法。分析了RUT工艺的曲面生成机理和可加工结构，并利用三维CAD程序进行了仿真。构造了使用三棱锥切削尖生成的纹理表面。实验结果表明，合理的双前刀面设计能够沿着正弦轨迹有效地去除切屑。本文还讨论了织构化表面的技术应用。结合表面粗糙度特征的测试，对织构化铝表面的润湿性能进行了评价。结果表明，织构化铝表面的真实的表面积比平整表面增加了近一倍，且由于具有明显的方向性织构特征，其润湿性能具有各向异性。
Tailored surface textures at the micro- or nanoscale dimensions are widely used to get required functional performances. Rotary ultrasonic texturing (RUT) technique has been proved to be capable of fabricating periodic micro- and nanostructures. In the present study, diamond tools with geometrically defined cutting edges were designed for fabricating different types of tailored surface textures using the RUT method. Surface generation mechanisms and machinable structures of the RUT process are analyzed and simulated with a 3D-CAD program. Textured surfaces generated by using a triangular pyramid cutting tip are constructed. Different textural patterns from several micrometers to several tens of micrometers with few burrs were successfully fabricated, which proved that tools with a proper two-rake-face design are capable of removing cutting chips efficiently along a sinusoidal cutting locus in the RUT process. Technical applications of the textured surfaces are also discussed. Wetting properties of textured aluminum surfaces were evaluated by combining the test of surface roughness features. The results show that the real surface area of the textured aluminum surfaces almost doubled by comparing with that of a flat surface, and anisotropic wetting properties were obtained due to the obvious directional textural features.