A series of (1-x)Y₂SiO₅-xZrSiO₄ (x = 0, 10, 20, 30, 40, mol. %) ceramics were successfully fabricated at 1500 °C. The influences of ZrSiO₄ doping concentration on microstructure, mechanical properties, and sintering behavior of Y₂SiO₅–ZrSiO₄ ceramics were investigated. The results showed that Y₂SiO₅–ZrSiO₄ ceramics were composed of Y₂SiO₅, Y₂Si₂O₇, and c-ZrO₂ three phases. Both the fracture toughness and elastic modulus of Y₂SiO₅–ZrSiO₄ ceramics first increased, and then decreased with the ZrSiO₄ doping concentration increasing. In particular, the fracture toughness of 0.7Y₂SiO₅-0.3ZrSiO₄ ceramic was the largest among those Y₂SiO₅–ZrSiO₄ ceramics investigated, which was nearly twice as high as that of pure Y₂SiO₅. The phase composition and microstructure of 0.7Y₂SiO₅-0.3ZrSiO₄ ceramic remained practically unchanged and the fracture toughness was about 3.04 MPa·m^1/2 after sintering at 1400 °C for 100 h, indicating that 0.7Y₂SiO₅-0.3ZrSiO₄ ceramic possessed good sintering resistance at 1400 °C.

一系列 (1- x )Y ₂ SiO ₅ - x ZrSiO ₄ ( x  = 0, 10, 20, 30, 40, mol. %) 陶瓷在 1500 °C 下成功制备。研究了ZrSiO ₄掺杂浓度对Y ₂ SiO ₅ -ZrSiO ₄陶瓷的微观结构、力学性能和烧结行为的影响。结果表明，Y ₂ SiO ₅ -ZrSiO ₄陶瓷由Y ₂ SiO ₅、Y ₂ Si ₂ O ₇和c-ZrO ₂三相。Y ₂ SiO ₅ -ZrSiO ₄陶瓷的断裂韧性和弹性模量均先增加，然后随着ZrSiO ₄掺杂浓度的增加而降低。特别地，0.7Y的断裂韧性₂的SiO ₅ -0.3ZrSiO ₄陶瓷是者Y中的最大的₂的SiO ₅ -ZrSiO ₄陶瓷研究，这是近两倍一样高的纯的Y ₂的SiO ₅。0.7Y ₂ SiO ₅ -0.3ZrSiO ₄的相组成和微观结构陶瓷在1400 ℃下烧结100 h后几乎没有变化，断裂韧性约为3.04 MPa·m ^1/2，表明0.7Y ₂ SiO ₅ -0.3ZrSiO ₄陶瓷在1400℃下具有良好的耐烧结性。