THE EFFECT OF TEMPERATURE AND ACID CONCENTRATION ON POLARIZATION RESISTANCE FOR A CORROSION REACTION UNDER ACTIVATION CONTROL

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منشور: 2009-06-01
DOI: https://doi.org/10.31026/j.eng.2009.02.21
الكلمات المفتاحية:
Inhibition, polarization resistance Betacrunch program,physical adsorption,Chemical adsorption,activation control

محتوى المقالة الرئيسي

Aprael Sarguis Yaro

الملخص

The effect of temperature ( 30,40,50,and 600C) on the polarization resistance (Rp) has been
analyzed for the corrosion of carbon steel in 1,3, and 5N HCl solution in absence & presence of
phenylthiourea(PHTU) as corrosion inhibitor.The polarization resistance was measured at above
mentioned conditions using BETACRUNCH program developed by Green and Gandi[Green,1982]. i.e; Values of applied current densities at potentials of +20,+10,-10 mv and then -20,+10,-10mV(SCE) from corrosion potentials were used to obtain corrosion parameters: iCorr ,ba bc followed by applying the equation: Rp = ( ba bc )/ 2.303 x iCorr.( ba + bc ).It is observed that: (i) for a certain acid concentration the polarization resistance decreased with increase in temperatureand/or decrease in inhibitor concentration.(ii) for a certain temperature, the polarization resistance decreases with an increase in acid concentration in presence and absence of inhibitor.

تفاصيل المقالة

إصدار

مجلد 15 عدد 2 (2009): journal of engineering

القسم

Articles
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كيفية الاقتباس

"THE EFFECT OF TEMPERATURE AND ACID CONCENTRATION ON POLARIZATION RESISTANCE FOR A CORROSION REACTION UNDER ACTIVATION CONTROL" (2009) مجلة الهندسة, 15(2), ص 3831–3839. doi:10.31026/j.eng.2009.02.21.

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