Publication: Effects of Concentration and Temperature on Corrosion and Scale Inhibitive Behavior of Uncaria gambir Extract for Low-Carbon Steel in Cooling-Water Solution
Issued Date
2020-11-01
Resource Type
ISSN
19348002
10683755
10683755
Other identifier(s)
2-s2.0-85098445276
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Surface Engineering and Applied Electrochemistry. Vol.56, No.6 (2020), 746-753
Suggested Citation
Jiraphan Pleanteangthume, Manthana Jariyaboon Effects of Concentration and Temperature on Corrosion and Scale Inhibitive Behavior of Uncaria gambir Extract for Low-Carbon Steel in Cooling-Water Solution. Surface Engineering and Applied Electrochemistry. Vol.56, No.6 (2020), 746-753. doi:10.3103/S1068375520060137 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/60929
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Effects of Concentration and Temperature on Corrosion and Scale Inhibitive Behavior of Uncaria gambir Extract for Low-Carbon Steel in Cooling-Water Solution
Author(s)
Other Contributor(s)
Abstract
© 2020, Allerton Press, Inc. Abstract: The corrosion inhibition property of the Uncaria gambir extract (UGE) for the low-carbon steel was investigated in a prepared cooling-water solution using gravimetric analysis and potentiodynamic polarization measurements. Anticorrosive effectiveness was tested at the UGE concentrations of 0–1500 ppm and temperatures of 40–60°C. The CaCO3 scale inhibition performance was evaluated following NACE standard TM 0374-2007 and ASTM D511-03. The surface morphology was analyzed by scanning electron microscopy. It was found that increasing the UGE concentration increased its anticorrosive effectiveness. A 70% corrosion inhibition efficiency and a 31% CaCO3 scale inhibition efficiency were observed during the use of 1500 ppm UGE. A change in the morphology of CaCO3 precipitate was observed due to the adsorption of the UGE, which suppressed the regular growth process. Increasing temperature decreased the effectiveness of the UGE. A higher corrosion potential and a reduction of anodic reactivity were also observed. The UGE acted as anodic inhibitor and conformed the Langmuir adsorption isotherm.