Study on Corrosion Behavior of Alloy 600 in NaCl Solution

Abstract

Alloy 600 was studied in NaCl solution for its pitting corrosion behavior in this paper. According to Tafel polarization, impedance analysis, specimen morphological analysis and metal dissolving analysis by AAS, there must be selective de-alloy corrosion happened in localized concentrated environment; corrosion velocity reaches maximum when Cl- concentration was 100mmol/L.

Study on High Temperature Corrosion of Alloy 600 in NaOH Solution

“…It was clearly that high concentration of NaOH solution can exist at least for more than 36 hours. In comparison with research in NaCl solution [4] , even low concentration (0.1mol/L) sodium chloride can cause Alloy 600 corrode seriously, 0.1mol/L NaCl solution may lead to intergranular corrosion of Alloy 600. So NaCl concentration must be highly warned for protection 600 tubes of SG.…”

Study on Corrosion Process of Nickel-Based Alloy in Na₂SO₄ Solutions

“…Alloy 600 was mainly used as heat transfer tubes of steam generator (SG) in nuclear power plant in world for its high corrosive resistance in harsh conditions [1][2] . However, the corrosion behaviour of Alloy 600 was far not enough studied, especially in all kinds of salts mediums.…”