Corrosion and scale inhibition of admiralty brass in cooling water system by aminotris-(methylenphosphonic) acid

Water is the most commonly used cooling fluid to remove unwanted heat from heat transfer surfaces [۱,۲]. Two of the main problems of cooling systems are corrosion and scale phenomena. Using phosphonates, R۳C–P(O)(OH)۲, as inhibitors is one method of preventing mineral scale and corrosion in these systems. Phosphonates are generally considered to be CaCO۳ and CaSO۴ scale inhibitors and react stoichiometrically with the calcium ions and form insoluble Ca–phosphonate precipitates which share some of the same harmful effects as the other forms of scale being inhibited [۳]. In this work, the corrosion and scale inhibition property of the aminotris-(methylenephosphonic) acid (ATMP) have been studied by using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques plus weighing.

کلیدواژه ها:

corrosion inhibitor ، Antiscale efficiency ، Admiralty brass ، EIS ، cooling water