Abstract Surface patterns can be used as a selective coating platform on metal surfaces, in particular, under various deformation conditions because they induce local strain gradients along with pattern geometry. In this study, hard and flexible coating materials were introduced to regions with small and large deformations, respectively, on patterned magnesium (Mg) surfaces. Despite significant deformation, a polymer-ceramic coating on patterned Mg maintained its protection, as opposed to a ceramic coating on a flat Mg surface. Our proposed approach can be implemented in various Mg-based medical-device platforms by optimizing surface patterns on Mg depending on their loading conditions for clinical use.

中文翻译：

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变形下镁植入物的无裂纹防腐涂层策略

摘要 表面图案可以用作金属表面上的选择性涂层平台，特别是在各种变形条件下，因为它们会随着图案几何形状引起局部应变梯度。在这项研究中，硬质和柔性涂层材料分别被引入到图案化镁 (Mg) 表面上具有小变形和大变形的区域。尽管有明显的变形，但与平坦镁表面上的陶瓷涂层相比，图案化镁上的聚合物陶瓷涂层仍能保持其保护作用。我们提出的方法可以通过根据临床使用的负载条件优化镁的表面图案，在各种基于镁的医疗器械平台中实施。