This work presents a novel method for preparing an Al2O3/YAG/ZrO2 ternary eutectic whereby combustion synthesis melt casting has been combined with the ultra‐high gravity (UHG) technique. The fabricated product had a relative density of 99.3% of the theoretical one. Phase composition and microstructure analyses indicated that the application of UHG resulted in a metal‐free ceramic microstructure with no porosity or microcracks. The microstructure comprises ZrO2 rods dispersed in Al2O3. The product had 17.82 GPa Vickers hardness and 5.51 MPa·m1/2 fracture toughness.
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