Mechanism Of The Inhibition Afforded By Some Hydrazone Oxime Derivatives Towards Aluminium In 2m Naoh Solution

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Mechanism Of The Inhibition Afforded By Some Hydrazone Oxime Derivatives Towards Aluminium In 2m Naoh Solution

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Title: Mechanism Of The Inhibition Afforded By Some Hydrazone Oxime Derivatives Towards Aluminium In 2m Naoh Solution
Author: Fouda, A. S. [عبد العزيز السيد فوده]
Abstract: The effect of some hydrazone oxime derivatives on the corrosion of aluminium in 2M NaOH solution was studied by polarization and weight-loss techniques. Polarization data indicated that all inhibitors tested were of a mixed type, and appeared to function through adsorption following the Temkin adsorption isotherm. The results showed that addition of Ba2* ions enhanced inhibition action by being chemisorbed on aluminium surface. The effect of temperature on the rate of corrosion with and without inhibitors was studied using weight-loss measurements. Some thermodynamic functions were also computed.استخدمت بعض مشتقات هيدرازون - اكزيم كموانع لتاكل الألومنيوم في هحلول 2 ع هيدلوكسيد اسلوديوم وذلك باستخدام طريقة فقد الوزن وطريقة الاستقطاب . وقد دلت اشتائج أيضا أن ميل هذه المركبات للادمصاص على الأسطح المعدلية تزد اد فى الاتجا،اء ا ا اء ا 7>7 اء ا ا. - وقد وجد أن اضافة ايوثات الباريوم إلى الوسط تزيد من فعالية هذه المواد في منع التاكل وذلك بادمصاصها كيميائيا على سطح الألومنيوم . كلما درس أيخلا تأثير درجة الحرارة على معدل اللاكل في وجود وفي عدم وجود هذه الموانع ، حعا عينت ونوقشت بعض الدول اشيرموديناميكية لعملية الادمصاص .
URI: http://hdl.handle.net/10576/10266
Date: 1991

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