Passivation and pitting corrosion of α‐brass (Cu/Zn: 63/37) in neutral buffer solutions containing chloride ions
作者： H. A. Abd El-Rahman
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摘要: The passivation behaviour and pitting corrosion of a commercial grade α-brass (Cu/Zn:63/37) in neutral buffer solutions (borate phosphate) the presence absence chloride ions were investigated by electrochemical techniques. results indicated dezincification at highly enough anodic potentials both ions. susceptibility was found to depend on composition solution, ion concentration nature passive layer metal surface before pitting. Current transients corresponding passivity, identified analyzed. Passivierung und Lochkorrosion von alpha-Messing (CuZn 63 37) neutralen chloridhaltigen Pufferlosungen Das Passivierungsverhalten die eines handelsublichen alpha-Messings neutraler Pufferlosung (Borat Phosphat) mit ohne Chlorid wurde elektrochemisch untersucht. Die Ergebnisse zeigen, das der chloridfreien Losung Entzinkung bei ausreichend hohen anodischen Potentialen auftritt, wahrend Anwesenheit Chloridionen sowohl als auch auftreten. Anfalligkeit fur ist abhangig Zusammensetzung Pufferlosung, Chloridionenkonzentration Art Passivierungsschicht auf dem Metall vor Beginn Lochkorrosion. Stromtransienten Passivitat, wurden identifiziert analysiert.
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