A research team in China has now developed an innovative pH-responsive self-healing coating based on a double-layer structure. Reading tip: Corrosion protection coatingsThe book “Anticorrosive Coatings: Fundamentals and New Concepts” brings together all the disciplines involved in the creation and use of corrosion protection coatings for metals. Synergistic effects for long-term corrosion resistanceThe combined action of tannic acid and cerium ions provides robust self-healing functionality. The results highlight a promising strategy for improving corrosion protection of magnesium alloys in demanding environments. Source: Wan, J. et al., Robust pH-responsive double-layered self-healing coating with synergistic effects of tannic acid and Ce ions applied on Mg alloy via the phytic acid pretreatment.