Corrosion failure analysis on the copper alloy flange by experimental and numerical simulation

This paper reports the failure analysis of a leaked copper flange used in diesel engine cooling system of a ship after less than one year of service. The failure flange was subjected to optical microscopy, and SEM, and corrosion product was analyzed by XPS. The failure cause is that polytetrafluoroethylene on the monel gasket can't go into to pores formed by dezincification corrosion inside copper alloy because of limited deformation of...