Factors affecting morphology and geometry of Arc-PVD coatings on complex part geometries

影响复杂零件几何形状的 Arc-PVD 涂层形态和几何形状的因素

• 批准号: 258797921
• 负责人: Professor Dr.-Ing. Christoph Leyens
• 金额: --
• 依托单位: Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/258797921?language=en
• 关键词: Factors; affecting; morphology; geometry; Arc

Due to the high degree of ionization in the plasma, microstructure and morphology of Arc-PVD coatings can be widely varied when bias voltages are used. On flat substrates this variability offers an advantageous toolbox for coating property modifications. However, for complex substrates, such as milling tools, the geometry dependence of electrical field density leads to local variations in coating structures and properties. Particularly sharp edges tend to be rounded, causing problems in practical applications since leading to less sharp tools. Costly post-coating mechanical treatments are necessary to maintain tool sharpness after coating.The aim of the project is an in-depth understanding of the interplay between geometry-dependent physical and chemical effects, microstructure and geometry of the resulting coatings and their properties. The scientific results will lay the foundation for knowledge-based geometry and property adjustment of coatings during deposition for complex component geometries.

由于等离子体中的高度电离，当使用偏压时，Arc-PVD 涂层的微观结构和形态可能会发生很大的变化。在平坦基材上，这种可变性为涂层性能修改提供了有利的工具箱。然而，对于复杂的基材，例如铣削工具，电场密度的几何依赖性会导致涂层结构和性能的局部变化。特别锋利的边缘往往会被倒圆，从而导致工具不太锋利，从而在实际应用中引起问题。为了在涂层后保持刀具锋利度，需要进行昂贵的涂层后机械处理。该项目的目的是深入了解几何形状相关的物理和化学效应、所得涂层的微观结构和几何形状及其性能之间的相互作用。科学成果将为复杂部件几何形状沉积过程中基于知识的几何形状和涂层性能调整奠定基础。

项目成果

Nano‐Design für Makroschichten

宏观层的纳米设计

• DOI: 10.1002/vipr.201800687
• 发表时间: 2018
• 期刊: Vakuum in Forschung und Praxis
• 影响因子: 0.1
• 作者: Krülle; T.;Kaulfuß; F. Zimmer; O.;Leyens; C.
• 通讯作者: C.