This study addresses the increasing concern over the scarcity and cost of Critical Rare Earth (CRE) minerals, vital for manufacturing high-tech products, particularly in aerospace. The EU’s Key Rare earth Materials (CREs) list, updated regularly, guides policies to mitigate supply risks, considering transportation, economic indicators, and supply concentration. The research explores strategies to reduce CRE dependency, focusing on alloy alterations and coatings for nickel-based alloys in aircraft turbines. Key CREs like nickel, titanium, cobalt, and tantalum play pivotal roles in various industries. The study also highlights the use of rare earth elements in aerospace applications, emphasizing critical elements like chromium and molybdenum. Coatings emerge as an effective strategy to lessen CRE usage in harsh conditions, particularly in aviation engine components. The paper concludes by acknowledging the EU’s continued monitoring of nickel demand, anticipating potential inclusion in future CREs lists due to the growing electric vehicle battery market.

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