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    Corrosion inhibition of copper with octadecylphosphonic acid (ODPA) in a simulated indoor atmospheric environment

    Year: 2021

    Journal: Corrosion Sci., Volume 192, NOV

    Authors: Zhao, Weijie; Chang, Tingru; Leygraf, Christofer; Johnson, C. Magnus

    Organizations: China Scholarship Council (CSC, China); Olle Engkvists stiftelse (Sweden) [2017/88 (180), 204-037]

    Keywords: Copper; ODPA (octadecylphosphonic acid); ODT (octadecylthiol); Nano-FTIR microscopy; Corrosion inhibition; Atmospheric corrosion

    The corrosion inhibition of self-assembled octadecylphosphonic acid (ODPA) layers on non-oxidized and pre oxidized copper and Langmuir-Blodgett deposited ODPA layers on pre-oxidized copper was investigated under a simulated indoor atmospheric corrosion environment containing 80% RH and 100 ppb formic acid. The corrosion process was monitored in-situ with infrared absorption/reflection spectroscopy, and the corrosion products were further characterised by grazing incidence X-ray diffraction. Nano-FTIR microscopy was used to reveal the nature, size, and distribution of the corrosion products on the nanoscale. The combination of preformed cuprite and ODPA layers, both with only some nanometres thickness, provided an excellent protection under this environment. Data availability: The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
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