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

Autor: H.C. Shih, T. Duval, U.T. Hong, J.C. Oung, L.H. Wang, Jien-Wei Yeh, Yao-Hsiang Chen
Rok vydání: 2007
Předmět:
Zdroj: Materials Letters. 61:2692-2696
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2006.03.158
Popis: Corrosion properties of a bulk Cu 0.5 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 − 1 ) water. The change of ECP with dissolved oxygen (DO) showed a sigmoid curve. In addition, the Cu 0.5 NiAlCoCrFeSi 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 (Na 2 SO 4 ) at 288 °C. A very low weight loss of ∼ 4.5 μg mm − 1 was also found for the Cu 0.5 NiAlCoCrFeSi alloy after immersion in deaerated 288 °C water for 12 weeks.
Databáze: OpenAIRE