LIU Xinhua, WANG Wenjing, ZHAO Xinqiang, et al. Corrosion inhibition performance and mechanism of PESA and its derivative[J]. CIESC Journal, 2015, (2): 695-702.
LIU Xinhua, WANG Wenjing, ZHAO Xinqiang, et al. Corrosion inhibition performance and mechanism of PESA and its derivative[J]. CIESC Journal, 2015, (2): 695-702.DOI: 10.11949/j.issn.0438-1157.20141095.
The corrosion inhibition and adsorption behavior of PESA and CSN-PESA were investigated as corrosion inhibitors for A3 carbon steel corrosion in tap-water by static mass loss and electrochemical methods. Inhibition mechanism of PESA and CSN-PESA was studied with quantum chemistry theory. PESA and CSN-PESA both showed corrosion inhibition performance in tap-water corrosion environment. The inhibition efficiency of CSN-PESA was better than PESA. The adsorption belonged to mix-type adsorption mainly dominated by chemisorption and physisorption
and followed Langmuir isotherm. PESA and its derivative had inhibitory effect on the cathode and anode. Quantum chemistry calculation showed that the main reason for better inhibition efficiency of CSN-PESA was that molecular orbital densities were mainly distributed in near the O