Researches on the Corrosion Behavior for a Drawing Steel that Went through Natural Ageing - POTECAŞU, Florentina; POTECAŞU, Octavian; IONIŢĂ, Elena; CIUBOTARIU, Alina (The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2009)