Zircon is important ceramic used widely due to its excellent properties, in particular for nuclear waste immobilization. However, it is difficult to obtain mono-phase zircon with high yield, usually result in double-phase ZrO₂/ZrSiO₄ ceramics. Herein, Ce-doped double-phase 0.2Zr_1-xCe_xO₂/Zr_1-yCe_ySiO₄ (0 ≤ x + y ≤ 1) ceramics were fabricated and their phase and microstructure evolution were studied. The results demonstrated that Ce content has great influence on the phase composition and microstructure. The ceramics with 0 ≤ x + y < 0.1 are tetragonal-ZrSiO₄, monoclinic-ZrO₂ and tetragonal-ZrO₂ phases, with 0.1 ≤ x + y ≤ 0.3 are tetragonal-ZrSiO₄, monoclinic-ZrO₂, tetragonal-ZrO₂ and cubic-ZrO₂ phases, with 0.3 < x + y ≤ 0.6 are tetragonal-ZrSiO₄, tetragonal-ZrO₂ and cubic-ZrO₂ phases, and with 0.6 < x + y ≤ 1 are cubic-ZrO₂ and Ce₂Si₂O₇ phases. With increasing Ce-doping content, the ZrSiO₄ retained the tetragonal phase, while ZrO₂ transformed from monoclinic to stable cubic phase. Furthermore, lattice parameters, grain size and compactness increased with increasing Ce content.

锆石由于其优异的性能而被广泛使用的重要陶瓷，特别是用于固定核废料。然而，难以以高产率获得单相锆石，通常导致双相ZrO ₂ / ZrSiO ₄陶瓷。在此，制备了铈掺杂的双相0.2Zr ₁ - _x Ce _x O ₂ / Zr _{1- y} Ce _y SiO ₄（  0≤x  +  y≤1  ）陶瓷，并研究了它们的相和微观结构演变。结果表明，铈含量对相组成和微观结构有很大影响。0≤x  + 的陶瓷ÿ  <0.1是正方晶的ZrSiO ₄，单斜的ZrO ₂和四方-的ZrO _2个相，用0.1≤ X  +  ý  ≤0.3是正方晶的ZrSiO ₄，单斜的ZrO ₂，正方晶的ZrO ₂和立方的ZrO ₂相，用0.3 < X  +  ý  ≤0.6是正方晶的ZrSiO ₄，正方晶的ZrO ₂和立方的ZrO _2个相，并用0.6 < X  +  ý  ≤1是立方的ZrO ₂和Ce ₂的Si ₂ ö ₇阶段。随着Ce掺杂含量的增加，ZrSiO ₄保留了四方相，而ZrO ₂从单斜晶相转变为稳定的立方相。此外，随着Ce含量的增加，晶格参数，晶粒尺寸和致密性增加。