Design and Synthesis of a Geopolymer Enhanced Quasi Crystalline Composite for Resisting Wear and Corrosion

Abstract

Multiphase composites are attractive for improved mechanical performance and corrosion resistance. In this research, a new composite consisting quasicrystalline Al75Mn14Si7Fe4 alloy of icosahedral, cubic خ±AlMnSiFe, monoclinic Al13Fe4 phases, and ferrosilicoaluminate geopolymer was synthesized using rapid solidification and thermal treatment methods. The concentration of icosahedral phase (iphase) was controlled and the formation of geopolymer was obtained through heat treatment. Characterization showed that the microhardness and wear resistance were increased with the amount of iphase. The corrosion resistance, on the other hand, was improved with the existence of the geopolymer. This research demonstrates an effective approach in processing a multiphase composite that has desired properties and performance through multiphase design and composition.