Modellverschleißuntersuchungen an unterschiedlichen Schichtsystemen in Abhängigkeit von den herstellungsbedingten Charakteristika

薄膜技术提供了广泛的材料来生成耐磨涂层。有意参与涂层工艺允许涂层的不同设计，包括硬度、微结构和梯度层组成。新的高功率脉冲磁控溅射(HiPIMS)技术允许改变工艺参数，如脉冲功率，最高可达1兆瓦或脉冲长度。多层膜与基材的连接良好，顶层硬度增加。可以避免因残余应力引起的涂层剥落。高温应用场合，如热气扇，风扇叶片使用PVD涂层。冲蚀磨损造成的材料损失导致叶片尖端公差的增加。这降低了风扇的效率。涂层对于提高部件的使用寿命是必不可少的，尤其是在高温环境下，抗冲蚀、磨粒和粘着磨损的涂层的研制是本课题研究的重点。必须在这些条件下进行磨损试验，以确定磨损机制随温度的变化。对这些磨损机制的认识使人们能够改变涂层的微观结构，以获得更高的耐磨性。

Thin-film technology offers a broad spectrum of materials to generate wear-resistant coatings. Intentional engagement into the coating process allows a variable design of the coating which includes the hardness, microstructure and a graded layer composition. The new High Power Impulse Magnetron Sputtering (HiPIMS) technology allows to vary process parameters like pulse power up to one megawatt or pulse length. Multilayers have a good connection to the base material with increasing hardness to the top layer. Chipping off of the layer caused by residual stresses can be avoided.High temperature applications like hot gas fans use PVD-coatings for the fan blades. Material loss caused by erosive wear leads to increasing tolerances at the blade tips. This reduces the efficiency of the fans. Coatings are necessary to increase the life-time of components, especially for high temperature applications.The development of wear protection coatings against erosive, abrasive and adhesive wear under high temperature conditions is the focus of this research project. Wear tests with these conditions have to be executed to determine the change of wear mechanisms with increasing temperature. The appreciation of these wear mechanisms allows to modify the microstructure of the coatings for a higher wear resistance.