Evaluation the Effect of Vibration on the Corrosion Rate of Automotive Paints

Abstract

This paper studies the influence of temperature on the corrosion rate of coated AA6111 aluminum alloy used in vehicle bodies under static and vibration states. The vibration test system was collected laboratory and used for testing of five different types of paints (EASI, Numix, Lesonal, DENSO and Polaron paints) in the 5 % NaCl solution using immersion test method. Lesonal paint provided the best corrosion protection, while DENSO paints show large values of corrosion rate, other coatings exhibit moderate values. Model of paints corrosion was developed to characterize the corrosion processes occur at the surfaces. It is found that corrosion rate obtained at vibration cases is larger than static cases and vibration effect on the coating protection rate.

Effect of quenching treatment on corrosion behavior and mechanical properties of 6061 aluminum alloy

“…Also from Figure 5 and Table 3 the potentiodynamic polarization curves of oil quenching showed a decrease in values of corrosion current density compared with water quenching at the same aging times that which is evident the corrosion rate reduced. The reduction of current density in oil quenching is probably due to the formation of the Anti-abrasion layer more than water quenching with different aging times which may merely blocks the reactive sites over the surface [16][17][18][19].…”