Corrosion resistance of functionally graded TiN/Ti coatings for proton exchange membrane fuel cells - Silva, Felipe Carneiro da; Ramirez, Oscar Mauricio Prada; Tunes, Matheus Araujo; Edmondson, Philip D.; Sagás, Julio Cesar; Fontana, Luis César; Melo, Hercílio Gomes de; Schön, Cláudio Geraldo (International Journal of Hydrogen Energy, 2020)