Peculiarities of the Inhibiting Effect of Cadmium Chloride on the Corrosion of Aluminum in Hydrochloric Solutions

V. V. Bartenev* and O. I. Barteneva**

* South Federal University, Rostov State University, ul. Zorge 7, Rostov-on-Don, 344007 Russia

** South Federal University, Research Institute of Physical and Organic Chemistry,
pr. Stachki, 194/2, Rostov-on-Don, 344090 Russia

E-mail: Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script

Received May 10, 2006

Abstract — The concentration effect of cadmium chloride on the corrosion rate of aluminum under conditions of the contact deposition of cadmium in hydrochloric acid solutions is studied. At changes in the contact deposition rate of the metal, in the surface area of the cadmium deposit, and the character of the deposits formed, the inhibiting effect of cadmium cations is shown to transform into the stimulating effect with an increase in the cadmium concentration in the solution. The reasons for the nonmonotonic character of the concentration dependence of the corrosion rate of aluminum are discussed.