- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
The Effect of Temperature and Acid Concentration on Polarization Resistance for a Corrosion Reaction Under Activation Control | ||
| Journal of Engineering | ||
| Article 1, Volume 15, Issue 2, 2009, Pages 3831-3839 | ||
| Author | ||
| Aprael Sarguis Yaro | ||
| Abstract | ||
| The effect of temperature ( 30,40,50,and 60°C) 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 temperature and/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. | ||
| Keywords | ||
| inhibition; polarization resistance Betacrunch program; physical adsorption; Chemical adsorption; activation control | ||
|
Statistics Article View: 200 PDF Download: 177 |
||