Abstract
This paper presents properties of TiOx-DLC (titanium oxides incorporated diamond like carbon) coatings deposited by RF PECVD (Radio Frequency Plasma Enhanced Chemical Vapour Deposition) method using combination of methane (CH4) and titanium(IV) isopropoxide (Ti[OCH(CH3)2]4) atmospheres. The obtained results show that the deposition process of TiOx-DLC coatings is strongly affected by the concentration of TTIP (titanium (IV) isopropoxide) precursor in working atmosphere. The proposed technology allows to obtain TiOx-DLC coatings with Ti concentration up to 10 at.%. Higher concentrations of Ti in the coating (5 and 10 at.%) result in twice the concentration of oxygen. As the results of the investigation it was noticed, stable TiOx-DLC coatings showing acceptable hardness and residual stress, as well as good optical properties contain up to 1.5 at.% of Ti and can be deposited at 400 V of the negative self-bias using 0.05 of TTIP partial pressure ratio.
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