The Acid-resistivity of Iron Alloys, (3rd. Report)

The Acid-resistivity of Fe-Ni-Cu Alloys

Abstract

A series of corrosion tests of Fe-Ni-Cu alloys containing 50%, 60%, 70% and 90% Ni with varying Cu content 1.00-10.09% and a trace of carbon, were carried out by the dip method. The corrosion was examined in 10% aqueous solutions of HNO₃, HCl and H₂SO₄ at 25° by measuring the loss in weight, and the extent of corrosion was expressed as mg/cm² hour. The results were discussed by referring equilibrium diagram of the Fe-Ni-Cu system.