TY - GEN
T1 - Anticorrosive behavior of propolis as a green corrosion inhibitor for aluminum
AU - Islami, Lazuardi Akmal
AU - Sembodo, Suryo
AU - Anawati, Anawati
N1 - Funding Information:
This work was fully financed by Hibah Publikasi Internasional Terindeks untuk Tugas Akhir Mahasiswa B (PITTA-B) Universitas Indonesia with contract no. NKB-0610/UN2.R3.1/HKP.05.00/2019.
Publisher Copyright:
© 2020 Author(s).
PY - 2020/4/21
Y1 - 2020/4/21
N2 - Propolis, which contained polyphenol as an anticorrosive agent, is proposed as an alternative green corrosion inhibitor for Al. The inhibitor efficiency was evaluated by conducting a weight loss test in 3.5 wt.% NaCl solution on a commercially pure Al coupon. At neutral pH, in the absence of propolis, Al surface underwent uniform corrosion. Propolis with the concentrations of 400 and 800?ppm effectively inhibited corrosion reaction on Al surface with efficiency 99.9 % for up to 8 days immersion. The efficiency decreased slightly between 80-90 % with prolonging immersion time. Pits were detected on the surface as a result of corrosion. At high concentration of 1200?ppm, the inhibition efficiency was somewhat lower, below 60 %. The viscous propolis was probably agglomerated when presented at a high concentration. The inhibition mechanism was likely to involve adsorption of the propolis on the metal surface, forming a thin layer. In an acid environment, the inhibition efficiency dropped down below 40 %. Propolis was believed to release hydrogen ion that contributed to lowering the surrounding pH and increased the danger of corrosion. Nevertheless, the high inhibition efficiency of propolis, especially at the neutral environment, shows promise as a green corrosion inhibitor for Al.
AB - Propolis, which contained polyphenol as an anticorrosive agent, is proposed as an alternative green corrosion inhibitor for Al. The inhibitor efficiency was evaluated by conducting a weight loss test in 3.5 wt.% NaCl solution on a commercially pure Al coupon. At neutral pH, in the absence of propolis, Al surface underwent uniform corrosion. Propolis with the concentrations of 400 and 800?ppm effectively inhibited corrosion reaction on Al surface with efficiency 99.9 % for up to 8 days immersion. The efficiency decreased slightly between 80-90 % with prolonging immersion time. Pits were detected on the surface as a result of corrosion. At high concentration of 1200?ppm, the inhibition efficiency was somewhat lower, below 60 %. The viscous propolis was probably agglomerated when presented at a high concentration. The inhibition mechanism was likely to involve adsorption of the propolis on the metal surface, forming a thin layer. In an acid environment, the inhibition efficiency dropped down below 40 %. Propolis was believed to release hydrogen ion that contributed to lowering the surrounding pH and increased the danger of corrosion. Nevertheless, the high inhibition efficiency of propolis, especially at the neutral environment, shows promise as a green corrosion inhibitor for Al.
UR - http://www.scopus.com/inward/record.url?scp=85113480716&partnerID=8YFLogxK
U2 - 10.1063/5.0001481
DO - 10.1063/5.0001481
M3 - Conference contribution
AN - SCOPUS:85113480716
T3 - AIP Conference Proceedings
BT - Proceedings of the 3rd International Seminar on Metallurgy and Materials, ISMM 2019
A2 - Darsono, Nono
A2 - Thaha, Yudi Nugraha
A2 - Ridhova, Aga
A2 - Rhamdani, Ahmad
A2 - Utomo, Muhammad Satrio
A2 - Ridlo, Faried Miftahur
A2 - Prasetyo, Mukhlis Agung
PB - American Institute of Physics Inc.
T2 - 3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019
Y2 - 23 October 2019 through 24 October 2019
ER -