4.7 Article

Corrosion inhibition of pre-formed mussel adhesive protein (Mefp-1) film to magnesium alloy

Journal

CORROSION SCIENCE
Volume 164, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2019.108309

Keywords

Magnesium; Mussel adhesive protein; Scanning reference electrode technique; EIs

Funding

  1. National Natural Science Foundation of China [51571169]
  2. State Key Project of Research and Development [2016YFC1100300]
  3. International Science & Technology Cooperation Program of China [2014DFG52350]
  4. Vinnova project of Sweden [20132102073]
  5. Swedish Foundation for International Cooperation in Research and Higher Education (STINIT project for Swedish-China collaboration) [CH2017-7255]

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A range of ex situ and in situ analytical techniques were applied to gain insights into the formation and properties of the pre-formed Mefp-1 film on magnesium-1.0 wt.% calcium (Mg-1.0Ca) alloy. The results revealed that the Mefp-1 film pre-formed at pH 4.6 shows a net-like structure, whereas it is more packed at pH 8.5. in situ scanning micro-reference electrode technique results demonstrated the Mefp-1 films formed at both pH can effectively inhibit the localised corrosion of Mg-1.0Ca alloy. Moreover, the film pre-formed at pH 4.6 provides an increasing corrosion inhibition to Mg-1.00a alloy during 7 days of exposure.

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