Anticorrosion Performance of Epoxy-Resin Coating Incorporating Talcum Powder Loaded with Sodium Tungstate

Abstract

A self-healing coating is a smart anticorrosive coating that integrates the inhibitor-loaded talcum powder into the coating to enable long-term protection for metallic materials. In the present work, sodium tungstate was used as the corrosion inhibitor and embedded into the layered channels of talcum powder. The resulting mixture was added to an epoxy-resin coating to create a new anticorrosive and self-healing coating. The self-healing ability of the prepared coating was investigated using electrochemical impedance spectroscopy and salt spray tests. The results revealed that the arc radius increased by one order of magnitude compared to the blank samples and the impedance remained greater than 10 9 Ω cm 2 after 25 days of soaking. Meanwhile, after 90 h of salt spraying, only slight corrosion appeared at the cross-cut of the composite coating, which contained talcum powder loaded with sodium tungstate, whereas the blank samples, suffered significant corrosion. In addition, infrared analysis, XRD and scanning electron microscopy were used to study the composition and morphology of the coating.

Ångström-Scale, Atomically Thin 2D Materials for Corrosion Mitigation and Passivation

“…Al-Saadi et al [41], Sun et al [71], Sun et al [195] Drop casting 2D material dispersed solution can be poured onto the target substrate to form anticorrosive film coating with subsequent drying procedure. Liu et al [34] 6. Conclusions…”

“…Furthermore, we The intricate physical (e.g., impermeability, morphology) and chemical (e.g., redox potential) aspects of 2D materials dictate their surface corrosion passivation mechanisms. Recent studies of 2D materials in the context of anti-corrosion have focused on graphene [28][29][30] and graphene derivatives (graphene oxide (GO) [31,32], reduced graphene oxide (rGO)), hBN [33], and silicates such as mica and talc [34]. In this featured review article, our focus is to elucidate and discuss the recent progress and development of 2D material coatings for corrosion mitigation and passivation in different sectors.…”

The effect of the hybrid multi-layered Graphene oxide/Talc as a hydrophobic agent in epoxy coating

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Using 3-Isocyanatopropyltrimethoxysilane to Decorate Graphene Oxide with Nano-Titanium Dioxide for Enhancing the Anti-Corrosion Properties of Epoxy Coating

“…To overcome this shortcoming, inorganic fillers like carbon black, clay, and silica were often added to the films, especially in practical use [8][9][10]. According to Liu et al, with the doping of the functional talcum powder, the corrosion performance of the resin enhanced enormously [11]. Ahmed et al [12] prepared core-shell ferrites/kaolin pigments that combine the properties of both and exhibit better corrosion protection properties.…”