01906nab a2200193 4500 20260520000857.0 260224s2009 xxu Corrosion Products Formed on Confined Hot-Dip Galvanized Steel in Accelerated Cyclic Corrosion Tests nov. 2009 07/07/2010 ; 07/07/2010 8 p. ; 718-725 Transcripción del resumen del autor. Different cyclic accelerated corrosion tests have been performed on perforation coupons made of hot-dip galvanized steel (e.g., in confined configuration). Two designs of experiments (DOE) made of nine accelerated tests each were used to study the influence of a selection of important climatic parameters such as the concentration of sodium chloride (NaCl, 1 wt% and 0.5 wt%), the drying level (45% and 70% relative humidity [RH]), the basic humidity cycle (12 h and 24 h), the frequency of salt spray (two and seven times per week), and the temperature (35°C and 45°C). The nature of the corrosion products collected from the perforation coupons has been determined using Fourier transform infrared spectroscopy (FTIR). The three main phases formed after exposure to different corrosion tests were Zn5(OH)8Cl2·H2O (simonkolleite), Zn5(OH)6(CO3)2 (hydrozincite), and ZnO (zincite). A statistical analysis of the results has shown that large amounts of zinc oxide were correlated to parameters that increased the corrosion rate of hot-dip galvanized steel such as the frequency of salt spray resulting in the formation of red rust. A possible mechanism is discussed. From the results, it is also obvious that the amount of ZnO may be a valuable tracer of the severity of the test for confined hot-dip galvanized steel. 11 Corrosion 65 ARTICULO Thierry, D. 27401 LeBozec, N. 32361 171825 171825 0 0 0 0 239644 BAAB BAAB 2026-03-05 200046700 0 200046700 2026-03-05 15:14:12 2026-03-05 ARTICULO