Abstract

RAMIREZ-RAMOS, Marco Antonio; OLAYA-FLORES, John Jairo  and  TRAVA-AIROLDI, Vladimir Jesús. Tribological Evaluation of Nbc and Vc Coatings on Steel AISI D2 Produced by the Thermo-Reactive Deposition Difusion Technique. Ing. invest. y tecnol. [online]. 2015, vol.16, n.2, pp.287-294. ISSN 2594-0732.

In this work vanadium carbides (VC) and niobium carbide (NbC) coatings were produced on AISI D2 tool steels system using the thermo reactive deposition diffusion technique (TRD). The experiments were performed in a salt bath (borax) with dissolution of ferro-niobium, ferro-vanadium and aluminium at temperature treatment of 1000°C during 3 hours. The coatings obtained were characterized by scanning electron microscopy and X-ray diffraction. The tribological behavior was studied by the technique of pin on disc to define the coefficient of friction and scratch technique to determine the adhesion level. Results were compared with uncoated substrates, a decrease of the friction coefficient and an increase in the hardness was observed.

Keywords : niobium carbide; vanadium varbide; wear; coefficient of friction; thermo-reactive deposition diffusion; coating.

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