Assessment of nacre-like ceramics in replacement to Ni superalloys in aircraft's engines

Aviation's fossil fuel emissions contribute to global warming. The production and disposal of the materials used in aircrafts too. current metallic alloys present hot section engines pose constraints terms temperature, pressure weight that restrain performance aircrafts. Also, these are produced using rare, depleting resources, polluting processes. In this paper, we hypothesize use bioinspired nacre-like alumina (NLA), a ceramic material exhibits unusual toughness, evaluate its potential as replacement for superalloys aircraft's engines. Comparing Ni NLA properties, engine performance, life cycle sustainability, find promising alternative although progress has be made with regards reliability, shaping, repair, governance process.