In this study, we explored how pH, dissolved inorganic carbon (DIC), and water flow affect the surface chemistry of lead–brass joints during early stages of corrosion using microelectrodes. Our findings revealed significant heterogeneity in water chemistry at metal surfaces. Under stagnant water conditions at pH 7, the pH difference between anodic (leaded-solder) and cathodic (brass) regions reached up to 7.5 units. High DIC levels in flowing water showed minimal surface pH changes, while low DIC levels exhibited a pH range of 7.6 to 5.4. Free chlorine consumption was higher near the lead–brass surface during stagnation, regardless of bulk pH. Flow conditions were found to disperse the low pH plume from the anode. This study provides direct evidence of localized galvanic corrosion in chlorinated drinking water environments.-Scientific Journal cover by scapiens
[Scientific Journal cover design] Low-Thermal-Budget Fluorite-Structure Ferroelectrics for Future Electronic Device Applications
In article number 2100028, Jiyoung Kim, Si Joon Kim, and their team review key factors involved in developing fluorite-structure ferroelectrics
