Corrosion-Resistant Zeolite Coatings

Inhibition of corrosion-driven organic coating disbondment on galvanised steel by smart release group II and Zn(II)-exchanged bentonite pigments

“…Recent studies on the corrosion protection of steel using organic coatings containing dispersed Ca 2+ -SiO 2 pigments, have shown that under certain circumstances an equivalent level of inhibition to conventional chromate pigments can be achieved [14]. Other cation-exchange systems such as zeolites are currently under investigation both as chromate-free pre-treatments [19][20][21] and novel anti-corrosion pigments [22]. Our research has been directed to the application of naturally occurring bentonite clay minerals as novel cation-exchange pigments for the protection of steel surfaces [5,6,23,24].…”

Electrochemical behavior of hydrophobic silane–zeolite coatings for corrosion protection of aluminum substrate

“…27 Due to their crystal lattice with pores of molecular size and peculiar abilities, such as the property to selectively exchange ions and molecules according to size, shape, and/or upload, zeolites are promising candidates to be exploited in various industrial applications. 28 An equally important feature is the inherent nontoxicity of the zeolite coating; thus these could represent an interesting and environmental friendly alternative to chromium-based surface treatments.…”

Low temperature single-step synthesis of zeolite Y coatings on aluminium substrates

“…Zeolite coatings have been proposed to improve heat transfer in heat exchangers [1], to act as antimicrobial layers [2,3] or anti-corrosive coatings for special applications [4,5]: General Motors Company has recently applied for a patent for corrosion resistant components covered by zeolitic layers for fuel-cell [6]. The high thermal and chemical resistance of zeolites, indeed, enables their use in various operating conditions and aggressive environments.…”