Applied Titanium Carbide Nanostructure Coating by Pulsed Plasma CVD and Study its Corrosion Behavior in 3.5% NaCl Solution

TiCx coatings are well known for a very high melting point, high hardness, good corrosion and wear resistance, so, these properties have made them of particular interest for a broadrange of application industries. In this research, nanostructured TiC was coated onto H11 hot-working steel at three different operating temperatures, such as 470, 490 and 510 (as a thermodynamic- kinetic parameter), by the pulsed DC plasma-assisted chemical vapor deposition (PACVD) method. The phase and structure properties and corrosion behavior of thin film were studied by X-Ray direction, X-ray photoelectron spectroscopy (XPS), raman spectroscopy, SEM, Polarization test and EIS. The results indicate that coating which was applied at 490 °C shows the formation of a homogeneous and uniform layer with particle size of about 7 nm and high corrosion resistance, and its corrosion behaviors possessed the positive open circuit potential (OCP) of about 10 mV vs. Standard calomel electrode (SCE) and lowest current density of about 0.43 (μA/Cm-2) in 3.5% NaCl solution.