Behaviour of welded and brazed joints in galvanized steels in a corrosive environment

Abstract

Investigations were carried out into the behaviour in a corrosive medium of joints in galvanized steels produced by arc welding and brazing without removal of the coating using welding materials based on iron, copper, zinc and aluminium. The topography of the electrode potentials and galvanic currents on the surface of the joints, coated with a thin layer of the electrolyte, is determined. The maximum width of the damaged coating in relation to the joint, ensuring efficient anodic shielding, is determined. The corrosion resistance of the joints is evaluated.

Keywords:

• welding
• galvanized steels
• corrosion resistance