When steel and aluminium are riveted together, an insulating material is required at the joint, as corrosion occurs between any two dissimilar metals which are in contact, because of what is known as electrolytic action .
Xa intsimbi kunye ne-aluminiyam zidityaniswe kunye, isigqubuthelo siyafuneka kwindawo ezidityaniswe kuyo, xa kusenzeka ikhoroshini phakathi kwazo naziphina iintsimbi ezingafaniyo ezidibeneyo, ngenxa yento ebizwa ngokuba yi-elektrolytiki.