The influence of inorganic inhibitors on the corrosion behavior of Al-Si alloys in aqueous chloride solutions

Abstract

Aluminum, as a metal which can alloy with the large number of elements, is very interesting from the point of its application, i.e. it should, in certain circumstances, in addition to mechanical, satisfy the corrosion characteristics. From this point of interest, the alloys based on Al-Si systems, whose behavior affects the chemical composition, allow, under certain conditions, the obtain ing of certain alloy structure that depends on the presence and concentration of other alloying elements. On this basis, it was assumed that the resulting alloy system Al-Si corrosion can 'fix' the addition of inhibitors, which will give some protection efficiency in 0.5M HCl solution, i.e. the corrosion stability of these alloys using inhibitors of Na2CO3 and Na2HPO4 NaNO2, bring to a higher level.