TRIGUS – Tribologically induced changes of boundary surfaces and bulk structures in dry lubricated systems under defined atmospheres

表面的摩擦磨损行为受摩擦学诱导的边界表面和结构的改变的影响很大，并且在很大程度上取决于环境条件。表面涂层可以对这些摩擦学特性进行有针对性的修改，特别是在能源效率和资源节约等全球性挑战方面。这项建议的重点是了解干摩擦接触中的基本物理和化学过程，这些过程将用四面体无定形碳(ta-C)和二硫化钼(MoS_2)的均匀涂层进行分析。这两种材料都代表了与科学和技术相关的涂层系统，它们在结构上经历了特征变化，并显示出与摩擦、磨损和大气影响有关的补充性能。这两种材料的异质结构涂层系统有可能将极低摩擦(MoS_2)和最高耐磨性(TA-C)结合在一起，这将是首次在这里进行研究。在系统的实验中，将研究涂层性能、对应体材料、真空度和大气气体对均相和非均相涂层体系的影响。该项目的实验和分析基础是一种新的、在世界范围内独一无二的实验装置，它结合了通用真空摩擦试验机和集束式工具。团簇仪器包括卢瑟福背散射(RBS)、弹性反冲探测(ERD)、反射光谱椭偏光谱和拉曼光谱。因此，它为元素特定深度分析、涂层厚度以及光学和结构分析提供了必要的在线仪器，允许在不破坏真空或暴露在环境空气中的情况下表征摩擦学诱导的过程。这项提议以前所未有的方式将新涂层系统在特定气氛下的摩擦学表征与复杂的在线分析联系在一起。真空摩擦试验机的安装和鉴定是作为重大研究仪器计划的一部分进行的，并基于德累斯顿工业大学制造技术研究所(TUD)和位于赫姆霍兹-德累斯顿-罗森多夫中心(HZDR)的离子束中心(HZDR)的长期合作。

The friction and wear behavior of surfaces is significantly influenced by tribologically induced modification of the boundary surface and structure and depends on environmental conditions to a great extent. Coating of a surface allows targeted modification of these tribological properties, particularly with regard to global challenges like energy efficiency and conservation of resources. The emphasis of this proposal is to access the essential physical and chemical processes in dry running fric-tion contacts, which will be analyzed using homogeneous coatings of tetra-hedral amorphous carbon (ta-C) and Molybdenum(IV)-disulfides (MoS2). Both materials represent scientifically and technically relevant coating systems that undergo a characteristic change in structure and exhibit com-plementary properties concerning friction, wear and the influence of the atmosphere. A heterogeneous, structured coating system of both materials opens the potential to combine very low fric-tion (MoS2) and highest wear resistance (ta-C) and will be investigated here for the first time. In systematic experiments the influence of coating properties, counter body material, vacuum, and atmospheric gases will be studied for homo-geneous and heterogeneous coating systems. The experimental and analytical foundation of this project is based on a new, worldwide unique experimental setup that combines a universal vacuum tribometer with a cluster tool. The cluster tool comprises Rutherford backscattering (RBS), elastic recoil detection (ERD), spectroscopic ellipsometry of reflectometry, and Raman spectroscopy. Thereby, it provides the necessary in-line instrumentation for element specific depth profiling, coating thickness, and optical and structural analysis, allowing the characterization of tribologically induced processes without breaking vacuum or exposure to ambient air. In an unprecedented way, this proposal links tribological characterization of new coating systems in defined atmospheres with complex in-line analysis. Setup and qualification of the vacuum tribometer have been carried out as a part of a Major Research Instrumentation Program and based on a long lasting cooperation of the Institute of Manufacturing Technology at Technische Universität Dresden (TUD) and the Ion Beam Center at Helmholtz-Zentrum Dresden-Rossendorf (HZDR).