Different multilayer coatings consisting of NiO and Ni layers supporting a 1H,1H,2H,2H-perfluorooctyltriethoxysilane/1,8-bis(triethoxysilyl)octane (PFOS) layer have been studied as possible alternatives for typical injection moulding tools. The NiO layer has been obtained by thermal annealing of an electroless Ni layer, whereas the PFOS layer was deposited by dip-coating. The physical and chemical properties of the as-coated steel have been studied by FIB-SEM-EDX, AFM, contact angle, Raman spectroscopy, X-ray photoelectron spectroscopy and PM-IRRAS. Furthermore, cyclic voltammetry, linear-sweep voltammetry, EIS and Mott-Schottky analyses were performed to determine the electrochemical properties of the coatings. Thermally grown NiO leads to a nanoporous surface layer with n-semiconducting properties, whereas the addition of the PFOS induced a decrease in the roughness of the studied samples. The corrosion resistance of the thermally grown NiO is strongly improved in comparison to the non-oxidised Ni-coating. Contact angles showed an effective reduction in surface energy on adsorbed PFOS-film. Injection-moulding tests using polyamide (PA6) and polyamide with 30% glass fibre content (PA6-GF30) were performed on a tool coated with PFOS/Ni to assess the anti-adhesive properties of this coating. After 150 cycles, the PFOS/Ni coating displayed remarkable stability, improved wear resistance and anti-adhesion properties to the studied polymers compared with the uncoated and TiN-coated tool.

已经研究了由NiO和Ni层组成的不同多层涂层，这些涂层支撑1H，1H，2H，2H-全氟辛基三乙氧基硅烷/ 1,8-双（三乙氧基甲硅烷基）辛烷（PFOS）层，作为典型注塑工具的可能替代品。通过化学镀Ni层的热退火获得了NiO层，而通过浸涂沉积了PFOS层。通过FIB-SEM-EDX，AFM，接触角，拉曼光谱，X射线光电子能谱和PM-IRRAS对镀层钢的物理和化学性质进行了研究。此外，进行了循环伏安法，线性扫描伏安法，EIS和Mott-Schottky分析，以确定涂层的电化学性能。热生长的NiO导致具有n的纳米多孔表面层-半导体性质，而全氟辛烷磺酸的加入导致所研究样品的粗糙度降低。与未氧化的Ni涂层相比，热生长的NiO的耐腐蚀性得到了极大的提高。接触角表明吸附的PFOS膜表面能有效降低。在涂有PFOS / Ni的工具上进行了使用聚酰胺（PA6）和玻璃纤维含量为30％的聚酰胺（PA6-GF30）的注塑测试，以评估该涂层的抗粘性能。经过150次循环后，与未涂覆和TiN涂覆的工具相比，PFOS / Ni涂层对研究的聚合物表现出了显着的稳定性，改善的耐磨性和抗粘附性能。