11058

10189

كارشناسي ارشد

شيمي معدني

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1394

سيزده، 76ص.: مصور

فاطمه داور

علي اشرفي

حسن حدادزاده، علي حسين كيانفر

1394/12/03

شيمي

ID10189

76 Synthesis and Characterization of ZrO2 MgO Nanocomposites Prepared by the Modified Sol Gel Technique and Investigation of Its Corrosive Resistance Properties Nasrin Shayan n shayan@ch iut ac ir Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi F Davar Assistant Prof davar@cc iut ac ir Abstract In this study ZrO2 MgO nanocomposites with different molar ratio have been prepared with organic additivessuch as sucrose and tartaric acid for the first time using sol gel method Sucrose and its derivated components areknown as chelating agent for metal cations and fuel for the combustion process In this process sucrose used as agelatin agent to arise stability of Zr OH 4 in a solution The particle sizes morphology of surface and types ofcrystalline structure have been investigated by FE SEM and XRD analysis To identifying of the functionalgroups and elements FT IR and EDX analysis have been used The particle size was reached in ranges about 35 5 nm Also the optical properties of these nanocomposites have investigated by UV Vis analysis and amaximum wave length of 284 nm 4 36 eV was achieved On the other hands the synthesized nanocompositeswere used as anti corrosive coating In this way the 316L type steel electrods were coated by deep coatingmethod and corrosive properties were investigated by potentiostat device The results showed the appropriate corrosion stability for steel electrods with three and five layer coatings which were calcinated in 300 500 and 700 C KeywordsNanocomposite zirconia magnesia sol gel corrosive resistance

فاطمه داور

علي اشرفي

حسن حدادزاده، علي حسين كيانفر