Today, innovative coatings must ensure wear protection and corrosion resistance for engineering materials with high corrosion susceptibility, e.g. mild steels, as well as the current sustainability criteria in terms of environment protection and health.

PVD technology fulfils most of these demands, but unfortunately, the corrosion protection performance is unsatisfactory due to the typically low coating thicknesses of only few micrometres.

One solution to overcome the corrosion problem are TiMgREN (RE = Rare Earth) based coatings, which were developed by the authors. Even with 5 μm thick monolithic TiMgGdN coatings a corrosion resistance of at least 800 h could be achieved in the salt spray test without any macroscopic corrosion attack.

In the present work, the influence of the coating composition, the substrate material and the surface roughness on the corrosion properties was examined. Besides, the application of Gd as alloying element, the influence and the effect of other rare earth metals (La, Ce) on the corrosion performance were investigated.

As benchmark, the TiMgGdN coatings were compared with industrial standard PVD coatings, DLC and electroplated Cr regarding the corrosion and the wear performance.

The coatings were characterized concerning their microstructural, mechanical and chemical properties. Salt spray tests as well as electrochemical measurements were carried out to examine the corrosion properties of the coated specimens. Furthermore, ball on disk wear tests were conducted by reciprocal dry sling tests by using a SRV 3 tribometer.

It was shown that by variation of the deposition parameters, the coating properties could be improved concerning both, corrosion and wear performance. Furthermore, the effect of the used rare earth metal type and the rare earth metal content on the coating properties was investigated. The TiMgGdN coatings exhibit superior corrosion properties in comparison to the industrial standard coatings.

如今，创新的涂料必须确保对高腐蚀敏感性的工程材料（例如低碳钢）的耐磨性和耐腐蚀性，以及当前在环境保护和健康方面的可持续性标准。

PVD技术可以满足大多数这些要求，但不幸的是，由于通常只有几微米的低涂层厚度，因此腐蚀防护性能不能令人满意。

克服腐蚀问题的一种解决方案是作者开发的基于TiMgREN（RE =稀土）的涂层。即使使用5μm厚的整体式TiMgGdN涂层，在盐雾试验中也可以达到至少800 h的耐腐蚀性，而不会产生宏观的腐蚀。

在本工作中，研究了涂料组成，基底材料和表面粗糙度对腐蚀性能的影响。此外，还研究了Gd作为合金元素的应用，以及其他稀土金属（La，Ce）对腐蚀性能的影响和影响。

作为基准，将TiMgGdN涂层与工业标准PVD涂层，DLC和电镀Cr的腐蚀和磨损性能进行了比较。

对涂层的微观结构，机械和化学性能进行了表征。进行了盐雾测试以及电化学测量，以检查涂层样品的腐蚀性能。此外，使用SRV 3摩擦计通过往复干吊索测试进行了圆盘磨损试验。

结果表明，通过改变沉积参数，可以在腐蚀和磨损性能方面提高涂层性能。此外，研究了使用的稀土金属类型和稀土金属含量对涂层性能的影响。与工业标准涂层相比，TiMgGdN涂层具有优异的腐蚀性能。