H Eivaz Mohammadloo - Faculty of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O.Box 15875-4413, Tehran, Iran
A.A Sarabi - Faculty of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O.Box 15875-4413, Tehran, Iran
A.A Sabbagh Alvani - Color and Polymer Research Center, Amirkabir University of Technology, P.O.Box 15875-4413, Tehran, Iran
H SAMEIE - Faculty of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O.Box 15875-4413, Tehran, Iran

Surface pretreatments are used on metal surfaces before application of organic paints for better adhesion and improved corrosion protection [1]. One such pretreatment process is theapplication of chemical conversion coatings. The advantages of Hexafluorozirconic acid based conversion thin film incomparison with former commonly used phosphate are: no need for frequent desludging, the energy input is lower because the solution temperature is near to room and lack ofdetrimental effect on ground water sources.