TY - JOUR
T1 - The effects of flow rate on impedance measurements of marine coatings using a rotating cylinder electrode
AU - Musabikha, Siti
AU - Priyotomo, Gadang
AU - Nikitasari, Arini
AU - Prifiharni, Siska
AU - Kusumastuti, Rahayu
AU - Satrio, Dendy
AU - Utama, I. Ketut Aria Pria
AU - Mukhtasor, Mukhtasor
AU - Junianto, Sony
AU - Ismail, Mokhtar Che
N1 - Publisher Copyright:
© American Coatings Association 2024.
PY - 2024/11
Y1 - 2024/11
N2 - The vertical axis turbine used in the maritime energy sector must rotate and deal with turbulent flows in order to generate electricity. Structural failures and operational problems like corrosion can occur and lower turbine efficiency. Thus, additional surface protection through coatings is required for metal corrosion prevention. In these studies, the effects of turbulent flow on polyamine epoxy and fluoropolymer marine coatings were examined using electrochemical impedance spectroscopy (EIS). To simulate the flow effect, a rotating cylinder electrode (RCE) sample was placed in an aqueous solution containing 3.5 wt% sodium chloride, along with additional treatments of neutral salt spray to speed up the aging process. The fluoropolymer coating exhibits the best coating properties and provides robust corrosion protection with an impedance value of 8.7 Ω·cm2. However, the results also show that turbulent flow, at a maximum speed of 5400 rpm, has an impact on coating corrosion resistance and reduces the protective properties of coatings of polyamine epoxy by up to 19% and fluoropolymer by up to 33%.
AB - The vertical axis turbine used in the maritime energy sector must rotate and deal with turbulent flows in order to generate electricity. Structural failures and operational problems like corrosion can occur and lower turbine efficiency. Thus, additional surface protection through coatings is required for metal corrosion prevention. In these studies, the effects of turbulent flow on polyamine epoxy and fluoropolymer marine coatings were examined using electrochemical impedance spectroscopy (EIS). To simulate the flow effect, a rotating cylinder electrode (RCE) sample was placed in an aqueous solution containing 3.5 wt% sodium chloride, along with additional treatments of neutral salt spray to speed up the aging process. The fluoropolymer coating exhibits the best coating properties and provides robust corrosion protection with an impedance value of 8.7 Ω·cm2. However, the results also show that turbulent flow, at a maximum speed of 5400 rpm, has an impact on coating corrosion resistance and reduces the protective properties of coatings of polyamine epoxy by up to 19% and fluoropolymer by up to 33%.
KW - Coating
KW - Fluoropolymer
KW - Polyamine epoxy
KW - Rotating cylinder electrode
KW - Turbulent flow
UR - http://www.scopus.com/inward/record.url?scp=85197749995&partnerID=8YFLogxK
U2 - 10.1007/s11998-024-00957-w
DO - 10.1007/s11998-024-00957-w
M3 - Article
AN - SCOPUS:85197749995
SN - 1547-0091
VL - 21
SP - 2093
EP - 2104
JO - Journal of Coatings Technology Research
JF - Journal of Coatings Technology Research
IS - 6
ER -
