Pawel Rokicki

Abstract:

Development of modern science and technologies increases demand on used materials. The use of different aircraft engine components and materials structures in aggressive environments or elevated temperature necessitate improvement of existing and development of new materials. They should be characterized by ease of production, high performance and physico-chemical properties. An important role in this field also concerns appropriately selected protective coatings and modification of surface layer that significantly affect the range of applicability. They are designed mainly to improve wear and corrosion resistance in elevated temperature of operation. The tendency in the development of surface layer engineering is thin coatings, based on small range diffusivity and pure coating systems. The development of new types of these materials systems will not only increase the efficiency of conventionally used elements but also introduce a new procedural methodology for the aviation industry. More and more attention in the field is paid to PVD techniques. Presented paper focuses on new types of materials systems obtained with this method. Authors focused their study on the investigation of coatings of TiN, TiAlN and TiCN types and their impact on properties of Titanium Grade 2 as a substrate. These materials are conventionally used for a production of aircraft engine compressors blades and are an excellent example for modification of elements performance parameters. Different coatings obtained on the same substrate allowed investigation of their impact on corrosion, erosion and wear resistance. Additionally, complex microstructure investigation has been performed in meaning to describe the substrate-coating materials system characteristic.