Resumo

MONTES DE OCA, J. et al. Aplicación de un recubrimiento de TiAIN para el incremento de la resistencia al desgaste de una compuerta de paso fabricada en acero T9. Rev. mex. fis. [online]. 2009, vol.55, n.5, pp.378-386. ISSN 0035-001X.

The present work reports a study to increase wear resistance of a ball passage floodgate (steel type T9) trough the application of a thick film (coating). This study have included a material and process selection, synthesis of the coating on steel plates as substrates and spherical device, assembling of the coated floodgate on the ball valves, and finally an evaluation of the valves in the process of a thermoelectric power station. Taking into account the different requirements, a TiAIN coating prepared by cathodic arc evaporation was finally retained. The crystal structure, morphology and chemical composition of the coating were evaluated by x-ray diffraction (XRD) and scanning electron microscopy equipped with an energy dispersive spectrometer (SEM-EDS). Finally, mechanical properties such as hardness and Young modulus were determined by nanoindentation.

Palavras-chave : Wear resistance; TiAIN coating; cathodic arc evaporation.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )