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Corrosion resistance of TiN films in 3% NaCl solution

The paper examines the corrosion behavior of textured polycrystalline and amorphous TiN films in 3% NaCl solution. It is shown that TiN films are oxidized by pitting corrosion. The main cause of corrosion instability of the textured polycrystalline films is interaction with impurities (in particular...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2013-07, Vol.52 (3-4), p.223-227
Main Authors: Dranenko, A. S., Lavrenko, V. A., Talash, V. N.
Format: Article
Language:English
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Summary:The paper examines the corrosion behavior of textured polycrystalline and amorphous TiN films in 3% NaCl solution. It is shown that TiN films are oxidized by pitting corrosion. The main cause of corrosion instability of the textured polycrystalline films is interaction with impurities (in particular, oxygen and carbon) that form “clouds” around the grain boundaries. In case of the amorphous–crystalline films, the clouds are observed around associated interfaces. The corrosion resistance of textured polycrystalline films decreases with higher thermal stresses resulting from different coefficients of thermal expansion of the film and substrate. The corrosion resistance of amorphous–crystalline TiN films is about 700 times higher than that of bulk TiN powder material and 2 to 10 times higher than that of textured polycrystalline films.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-013-9516-8