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Undoped Y2O3 and Y2O3 doped with either Si4+, Er3+, Yb3+, Al3+ or Ti4+ were fabricated by a two‐step sintering method. The concentration of each dopant cation (Si4+, Er3+, Yb3+, Al3+, and Ti4+) was adjusted so that the dopant:yttria molar ratio was 0.01 and the mechanical properties and the microstructures of each were characterized. The Vickers hardness and the bending strength of cation‐doped Y2...
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