Protection of multimaterial assemblies

Abstract

<jats:p>The light-weight design calls for broader utilization of multimaterial mixes (M<jats:sup>3</jats:sup>) in different engineering structures, especially in the transportation area. Together with joining technologies for hybrid structures, the optimization of the life cycle of such systems is an issue of prime importance. Multimaterial structures are often prone to faster degradation under service conditions because of galvanically forced electrochemical corrosion. The protection technologies traditionally used for single-material structures are not always applicable for multimaterial design because of compatibility issues and a stronger thermodynamic driving force for degradation. In this chapter different strategies for protection of multimaterials structures are briefly overviewed. The main focus is on new alternative protection systems based on combination of synergistic inhibiting mixtures introduced into protective coatings. A road map which can be followed in order to create an efficient active protection coating for hybrid structures is suggested.</jats:p>

Unravelling Corrosion Degradation of Aged Aircraft Components Protected by Chromate-Based Coatings

“…1. This design, while lightweight and robust, presents a challenge due to the differences in electrochemical nobility of the materials used, making these parts potentially susceptible to galvanic corrosion, which is a contemporary challenge in the aerospace industry [32,33]. Additionally, the leading edge of the aircraft part is securely fastened using cadmium-plated steel screws, wet-installed with sealant.…”