Corrosion properties of a novel bulk Cu0.5NiAlCoCrFeSi glassy alloy in 288 °C high-purity water

Corrosion properties of a bulk Cu0.5NiAlCoCrFeSi 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− 1) water. The change of ECP with dissolved oxygen (DO) showed a sigmoid curve. In addition, the Cu0.5NiAlCoCrFeSi alloy exhibited a wide passive region and the passive current density was ∼ 2 × 10− 4 A cm− 2 in deaerated water containing 0.01 N sodium sulfate (Na2SO4) at 288 °C. A very low weight loss of ∼ 4.5 μg mm− 1 was also found for the Cu0.5NiAlCoCrFeSi alloy after immersion in deaerated 288 °C water for 12 weeks.