Additive Manufacturing (AM) has enabled the realization of custom products with intricate geometric features that are either too complex or even intractable for subtractive manufacturing processes. On the other hand, owing to their relatively poor roughness, functional surfaces generated in AM have to be often finish machined. This research explored the prospect of turning this limitation around by pursuing a novel concept of Additive Texturing (AT) wherein the topography of an AM part is tailored in-process to entail textures that further enhance the functionality of an AM product. In this context, the limits of the selective laser melting process in printing metallic surface microfeatures were investigated as a precursor to realizing texture patterns comprising pillars, channels, and re-entrant structures. Following on from this, the efficacy of such textures in controlling the wetting behaviour of stainless steel AM surfaces was examined. The notion of AT is demonstrated in terms of its capability to generate hydrophobic AM surfaces with water contact angles exceeding 140°.

通过增材制造（AM），可以实现具有复杂几何特征的定制产品，这些特征对于减法制造过程而言过于复杂甚至难以处理。另一方面，由于其相对较差的粗糙度，在AM中生成的功能性表面必须经常进行精加工。这项研究探索了通过追求一种新概念的“加性纹理化”（AT）来克服这一局限性的前景，其中在加工过程中对AM零件的形貌进行了定制，以包含进一步增强AM产品功能的纹理。在此背景下，作为实现包括支柱，通道和凹入结构的纹理图案的前提，对印刷金属表面微观特征中选择性激光熔化工艺的局限性进行了研究。接下来，检验了这种织构在控制不锈钢AM表面润湿行为方面的功效。AT的概念是通过其产生水接触角超过140°的疏水性AM表面的能力得到证明的。