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Abstract
A study has been conducted regarding the deposition of titanium nitride on stainless steel for potential uses in surgical applications. Titanium nitride was deposited from a gaseous mixture of TiCl 4, H 2 and N 2 using a CVD process at atmospheric pressure and a temperature of 1173 K employing a horizontal quartz reactor and linear flow velocities in the range 20 to 60 cm min −1. Adhesion of the coatings was measured by using the scratch adhesion test and their thickness by using the ball cratering method. The results have shown that at low linear flow velocities the deposits obtained are thin, inhomogeneous and have a poor adhesion to the substrate. In contrast, at high velocities (50 cm min −1) the coatings had better properties and characteristics.
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