Coatings for corrosion prevention based on rare earths

Synthesis, structure, and corrosion inhibiting properties of REIII 3-thiophenecarboxylate complexes

“…19 Over the past two decades, many rare earth carboxylates have been synthesized 20,21 and a number of them have been tested for corrosion inhibition. 10,19,[22][23][24][25][26] Previous studies have found that cerium salicylate, 26 lanthanum 4-hydroxycinnamate 7 and yttrium 3-(4 0 -methylbenzoyl)propionates 27 are excellent inhibitors for mild steel in sodium chloride solutions.…”

Assessment of Self-Healing Epoxy-Based Coatings Containing Microcapsules Applied on Hot Dipped Galvanized Steel

“…In general, the literature agrees that rare earths behave as cathodic corrosion inhibitors for many metal alloys when added to a corrosive electrolyte (de Damborenea et al, 2014;Hughes et al, 2014;O'Keefe et al, 2014;Yasakau et al, 2014). In particular, the process of inhibiting corrosion through the lanthanide salts for various materials is a consequence of the inhibition of cathodic regions by the precipitation of an oxide/ hydroxide film.…”

Cerium-based conversion films developed on LiAl-layered double hydroxide coatings for corrosion protection of AA7075 aluminum alloys

“…The development of alternative surface pretreatments and pigmented coatings on Al and its alloys to eliminate the health hazards and toxicity of soluble hexavalent chromium has been pursued for many years. Especially in the aeronautical industry, the replacement or elimination of hexavalent chromium has been and still is a major challenge [1][2][3][4][5]. Chromate-containing conversion coatings (CCs) are among the most developed and large-scale applied to protect Al alloys with superior performance.…”