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Phase relationships in the system Si<sub>3</sub>N<sub>4</sub>–SiO<sub>2</sub>–Yb<sub>2</sub>O<sub>3</sub>
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no DOI — not checkedStrength and Microstructure of Sintered Si3N4 wih Rare‐Earth Oxide Additions
no DOI — not checkedGas‐Pressure Sintering of Si3N4 with Concurrent Addition of Al2O3 and 5 wt% Rare Earth Oxide: High Fracture Toughness Si3N4 with Fiber‐like Structure
no DOI — not checkedPhase Diagrams for Ceramics
no DOI — not checkedM.Kitayama K.Hirao M.Toriyama andS.Kanzaki unpublished work.
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