Refine
Year of publication
- 2016 (1)
Document Type
Language
- English (1)
Keywords
- physical vapour deposition (1) (remove)
Institute
Multi-layer constructions become more and more relevant in lightweight applications due to their high strength to
weight ratio. They offer excellent crash, damping and recycling properties. Also, the morphology of thermoplastic
carbon fibre reinforced plastics (CFRP) render them interesting for large scale manufacturing processes.
Nevertheless, a major disadvantage results in a poor resistance against wear and tear, e.g. erosion, which is
attributed to weak hardness properties. Hence, this work deals with tribological investigations on orthotropic
carbon fibre reinforced polymers (PA 6) either with protective ceramic coating or without. The chosen coating
system is a well-known protective covering of metal components, e.g. metal cutting tools, produced by physical
vapor deposition (PVD). To characterize the coating system on thermoplastic CFRP, standard analyzing methods are utilized, like optical and scanning electron microscopy (SEM). The tribological investigations are conducted by the tribological ball on disk method to generate wear tracks on the sample surfaces and hence to calculate the
wear rates. These results are compared to literature findings with respect to a certain protective coating system (TiN) and a second nano-structured gel coating system, where both systems are deposited on a thermosetting
material, i.e. carbon fibre reinforced epoxy resin, respectively. For this purpose the feasibility of depositing a protective ceramic layer on thermoplastic CFRP is demonstrated. First results on suitable surface pre-treatments have shown a significant influence on the coating quality. The improved performance regarding the wear behavior with respect to tribology compared to the poor substrate and existing technologies is shown additionally.