Effect of the layer architectures on the tribological performance of high-performance, additive manufactured sliding layers

近十年来，增材制造这一新兴工艺技术越来越受到科学领域和实际应用领域的关注。增材制造已经成功地应用于原型和备件的生产，甚至是小批量生产。熔融长丝制造（FFF）也称为熔融沉积建模（FDM）是制造热塑性塑料部件最常用的技术之一，与传统技术相比，它在节省昂贵的工具和生产具有复杂几何形状的定制部件方面具有显着优势。此外，这种新颖的加工技术使设计和制造适应负载路径的高效组件成为可能。本课题的目的是制造和研究在不同层结构的金属基板上制备的熔丝滑动层的摩擦磨损性能。为此，高性能热塑性摩擦复合材料的滑动层将被印刷在不同的金属基板上，然后通过在干滑动条件下使用不同的测试配置进行摩擦学检查。摩擦磨损特性将与摩擦学机制相关联，从而可以深入了解印刷滑动层的摩擦学性能。此外，3D打印层的摩擦学性能将与注塑样品的摩擦学性能进行比较，以评估增材制造滑动层的可靠性。期望该项目的成功将有助于理解金属基板上熔丝制造的滑动层的摩擦磨损行为，从而为制造具有优异摩擦学性能的元件铺平新的道路。

Over the past decade, the novel process technology, i.e. additive manufacturing, has attracted more and more attention from both the scientific field and practical applications. Additive manufacturing has been successfully utilized for production of prototypes and spare parts or even small series production. Fused filament fabrication (FFF) also known as fused deposition modeling (FDM) is one of the mostly used technique for fabricating thermoplastic-based components, which provides significant advantages in terms of saving expensive tools and production of customized parts with complex geometry compared to the traditional technologies. Additionally, this novel processing technique enables the design and manufacturing of highly efficient components adapted to the load paths. The aim of this project is to manufacture and study the friction and wear performance of fused filament fabricated sliding layers on metallic substrates with different layer architectures. For this purpose, sliding layers of high-performance thermoplastic-based tribocomposites will be printed on different metallic substrates and then tribologically examined by using different testing configurations under dry sliding conditions. The friction and wear characteristics will be correlated with the tribological mechanisms, so that a deep understanding of the tribological performance of the printed sliding layers can be achieved. In addition, the tribological performance of the 3D printed layers will be compared with those of injection-molded samples, in order to assess the reliability of the additive manufactured sliding layers. It is expected that a successful project will contribute to the understanding of the friction and wear behavior of fused filament fabricated sliding layers with metallic substrate and thus pave a novel route for fabricating such components with excellent tribological performance for practical applications.