中文摘要：

有高动力的 CO2 激光的快速的表面团结在准备方向性地团结的 Al2O3/YAG/ZrO2 被执行第三最容易溶解在 situ 陶器合成。在团结微观结构特征和热性质上处理参数的激光的效果被扫描电子显微镜学(SEM ) 学习，精力散光谱学(版本) ， X 光检查 diffractometry (XRD ) 和综合地热的分析(STA ) 。在准备和微结构参数的激光力量和扫描的率的影响的详细调查第三最容易溶解被介绍。而且，在高温度的最容易溶解的阶段分离规则被讨论。结果显示那团结微观结构第三最容易溶解合成被处理参数的激光极大地影响。综合地热的分析表演第三的 Al2O3/YAG/ZrO2 的最容易溶解的温度合成是 1 738 ??? 戭獡摥瘠牡獩潴 ? 散慲業獣魸 ? 魸 ? D

英文摘要：

Rapid surface resolidification with a high powered CO2-laser was performed in preparing directionally solidified Al2O3/YAG/ZrO2 ternary eutectic ceramic in situ composite. The effects of laser processing parameters on the solidification microstructure characteristics and thermal properties were studied by scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, X-ray diffractometry （XRD） and synthetically thermal analysis （STA）. Detailed investigations of the influence of laser power and scanning rate on the preparation and microstructural parameters of the ternary eutectic were presented. Moreover, the eutectic phase separation rule at high temperature was discussed. The results indicate that solidification microstructure of the ternary eutectic composite is greatly influenced by the laser processing parameters. The synthetically thermal analysis shows that the eutectic temperature of ternary Al2O3/YAG/ZrO2 composite is 1 738 ℃, well matching the phase diagram of Al2O3-Y2O3-ZrO2.