Archives of Metallurgy and Materials

Abstract

The paper presents the influence of ZrO 2 coating on Ti6Al7Nb titanium alloy depending on the method of deposition. The coatings were made by sol-gel method and atomic layer deposition (ALD). Wettability tests, pitting corrosion assessment and electrochemical impedance spectroscopy (EIS) were carried out in the paper. Complementary macro-and microscopic observations, roughness analysis by profilometric method and atomic force microscopy (AFM) were made. Based on the results obtained, it can be concluded that the type of method of depositing the layer on the surface of the material has a significant influence on its properties and that it should be taken into account during the process of the material improvement. Drawing on the findings presented, it can be inferred that roughness has a significant impact upon the surface wetttability of the tested surfaces and their related corrosion resistance. The obtainment of hydrophobic surfaces is for smaller rougidity values.

Archives of Metallurgy and Materials

“…Material with lower density, higher strength and good properties at elevated temperatures is highly needed in the aerospace and defence industries. titanium alloy is the one which is best suited to the requirements mentioned above [1][2][3]. ti-6Al-4V is the most used material in the available titanium alloys with higher resistance to thermal and corrosion [4].…”