Effect of Low Temperature Nitriding of 100Cr6 Substrates on TiN Coatings Deposited by IBAD
AUTOR(ES)
Vales, Sandra dos Santos, Becerra, Erika Abigail Ochoa, Brito, Pedro Paiva, Droppa Junior, Roosevelt, Garcia, Jose Luis, Alvarez, Fernando, Pinto, Haroldo Cavalcanti
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
2015-02
RESUMO
In this paper we studied the influence of pre-treating the surface of 100Cr6 steel by ion beam nitriding at low temperature (380°C) on the surface topography and wear resistance of thin TiN coatings deposited by reactive ion beam assisted deposition. The specimens were characterized by grazing incidence X-ray diffraction, scanning electron microscopy and atomic force microscopy. The wear resistance of the TiN-coated specimens was evaluated by means of ball on disc tests. The results showed that application of a preliminary ion beam nitriding treatment slightly increased the surface roughness but improved the wear resistance of the 100Cr6 steel due to the formation of a diffusion zone containing the γ'-Fe4N nitride combined with the TiN coating.
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