Abstract
Corrosion properties of a bulk Cu <sub>0.5</sub> NiAlCoCrFeSi glassy alloy such as electrochemical corrosion potential (ECP), potentiodynamic polarization, and weight loss measurements were carried out for the first time in 288 °C high-purity (outlet conductivity < 0.07 μS cm <sup>- 1</sup> ) water. The change of ECP with dissolved oxygen (DO) showed a sigmoid curve. In addition, the Cu <sub>0.5</sub> NiAlCoCrFeSi alloy exhibited a wide passive region and the passive current density was ∼ 2 × 10 <sup>- 4</sup> A cm <sup>- 2</sup> in deaerated water containing 0.01 N sodium sulfate (Na <sub>2</sub> SO <sub>4</sub> ) at 288 °C. A very low weight loss of ∼ 4.5 μg mm <sup>- 1</sup> was also found for the Cu <sub>0.5</sub> NiAlCoCrFeSi alloy after immersion in deaerated 288 °C water for 12 weeks. © 2006 Elsevier B.V. All rights reserved.