Open AccessElectric arc spray coatings for the naval industry
Author(s) -
Laura Marcela Dimaté Castellanos,
José Alfredo Morales Torres,
Jhon Jairo Olaya Flórez
Publication year - 2011
Publication title -
ship science and technology/ciencia y tecnologia de buques/el aprendiz
Language(s) - English
Resource type - Journals
eISSN - 2619-645X
pISSN - 1909-8642
DOI - 10.25043/19098642.44
Subject(s) - materials science , microstructure , abrasive , scanning electron microscope , metallurgy , thermal spraying , corrosion , coating , carbon steel , optical microscope , polarization (electrochemistry) , electric arc , electrolyte , composite material , electrode , chemistry
Carbon and stainless steel, as well as Fe-Nb-Cr-W coatings were deposited on steel substrates by using electric arc spray, and its possibility of applying such coatings in the naval industry was analyzed. In order to achieve this, the coating microstructure was characterized before and after the corrosion, abrasive wear, and thermal barrier tests. Corrosion resistance was analyzed via potenciodynamic polarization test using a NaCl electrolyte at 3%; abrasive wear resistance was measured by using a three-component system following ASTM G-65 recommendations, while quality control as thermal barriers was studied by using EIS tests. Scanning Electron Microscopy, optical microscopy and X-ray diffraction were used to characterize the microstructure of the coatings.