โ Scribed by Florian Mansfeld
No coin nor oath required. For personal study only.
The effect o f relative humidity ( R H ) on atmospheric corrosion rates r has been studied in laboratory experiments for rust covered steel in air and air + 1 ppm SOz. The expression:
describes the experimental results, where is the corrosion rate at the critical relative humidity RHcdt and b" is the normalized corrosion rate at R H = 100%. While a large effect o f NaCl impurities in rust was found, no effect o f SO2 was observed. Time-of-wetness was determined in outdoor exposure using the previously described atmospheric corrosion monitor (ACM). It was found that for exposure at a site in Thousand Oaks, California, the time-of-wetness corresponds to R H > 40%.
๐ SIMILAR VOLUMES
Once corrosion of reinforcing steel has been initiated, the internal relative humidity and electrical resistivity of the concrete cover are two of the factors controlling active corrosion. To determine this influence, simultaneous measurements of corrosion rate, electrical resistivity and internal r
The corrosion of mdd steel and cast iron m cleaning solutions with dflerent mhlbltors (ahphatlc and aromatic aads) was studed by measurements of corrosion potentials, I-U curves and the geometnc shape of the pits The mdustnal conditions were sunulated by tap water (TW) with 50mM borate (pH 9 4, 70ยฐC