PANG Ran, ZUO Yu, TANG Yuming, et al. Failure behaviors of epoxy/acrylic polyurethane organic coatings in corrosive media by EIS[J]. CIESC Journal, 2010, (10): 2656-2661.
PANG Ran, ZUO Yu, TANG Yuming, et al. Failure behaviors of epoxy/acrylic polyurethane organic coatings in corrosive media by EIS[J]. CIESC Journal, 2010, (10): 2656-2661.DOI:
zinc-rich epoxy primer/epoxy coating with mica iron/acrylic polyurethane topcoat
in corrosive media
including 3.5% NaCl solution
3.5% NaCl solution + UV radiation
moist heat and salt spray
were studied with electrochemistry impedance spectra (EIS).The relationships between coating resistance and phase angle were analyzed.The results indicated that phase angle at middle frequency of 10 Hz and coating resistance showed similar decreasing tendencies
hence these phase angle parameters may be used as quick measurements to evaluate coating performance.The order of the damaging effect of the four corrosive environments on carbon steel was 3.5% NaCl solution < salt spray < moist heat < 3.5% NaCl solution + UV radiation.