通过剖面电子显微技术研究了离子注入在单晶YSZ中诱发生成Pyrochlore纳米晶(约10nm),并使萤石结构的YSZ局部相变为焦绿石结构.在YSZ单晶中注入180keV Ti+离子,注入温度为常温,Ti+注量为1×1017ions/cm2,随后在1100℃的氩气中退火2h.电子显微研究表明,Y(钇)稳定的立方ZrO2转变成为点阵常数a≈(1.024士0.005)nm的焦绿石结构A2B2O7(Y2(TixZr1-x)2O7).生成的Y2(TixZr1-x)2O7与母相保持共格,有[110]YSZ∥[110]P和(111)ySZ∥(111)P的取向关系.阳离子有序和化学成分的重新分布被认为是这种相变发生的机理.
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