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首页> 外文期刊>RSC Advances >Preparation and heat-insulating properties of Al2O3–ZrO2(Y2O3) hollow fibers derived from cogon using an orthogonal experimental design
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Preparation and heat-insulating properties of Al2O3–ZrO2(Y2O3) hollow fibers derived from cogon using an orthogonal experimental design

机译：正交实验设计制备Cogon衍生的Al2O3-ZrO2（Y2O3）中空纤维及其隔热性能

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摘要

Bionic design is efficient to develop high-performance lightweight refractories with sophisticated structures such as hollow ceramic fibers. Here, we report a four-stage procedure for the preparation of Al _(2) O _(3) –ZrO _(2) (Y _(2) O _(3) ) hollow fibers using the template of cogon—a natural grass. Subsequently, to optimize the thermal performance of the fibers, four sets of preparation parameters, namely, x (Al _(2) O _(3) ), solute mass ratio of the mixture, dry temperature, and sintering temperature were investigated. Through an orthogonal design, the optimal condition of each parameter was obtained as follows: x (Al _(2) O _(3) ) was 0.70, solute mass ratio of the mixture was 15 wt%, dry temperature was 80 °C, and sintering temperature was 1100 °C. Overall, Al _(2) O _(3) –ZrO _(2) (Y _(2) O _(3) ) hollow fibers show relatively low thermal conductivity (0.1038 W m ~(?1) K ~(?1) at 1000 °C), high porosity (95.0%), and low density (0.05–0.10 g cm ~(?3) ). The multiphase compositions and morphology of Al _(2) O _(3) –ZrO _(2) (Y _(2) O _(3) ) hollow fibers, which may contribute to their thermal properties, were also discussed.
机译：仿生设计可以有效地开发具有复杂结构（如中空陶瓷纤维）的高性能轻质耐火材料。在这里，我们报告使用cogon-a模板制备Al _（2）O _（3）–ZrO _（2）（Y _（2）O _（3））中空纤维的四阶段程序。天然草。随后，为了优化纤维的热性能，研究了四组制备参数，即x（Al _（2）O _（3）），混合物的溶质质量比，干燥温度和烧结温度。通过正交设计，得出每个参数的最佳条件如下：x（Al _（2）O _（3））为0.70，混合物的溶质质量比为15 wt％，干燥温度为80°C，烧结温度为1100℃。总体而言，Al _（2）O _（3）–ZrO _（2）（Y _（2）O _（3））中空纤维的导热系数较低（0.1038 W m〜（？1）K〜（？ 1）在1000°C下），高孔隙率（95.0％）和低密度（0.05–0.10 g cm〜（？3））。还讨论了Al _（2）O _（3）–ZrO _（2）（Y _（2）O _（3））中空纤维的多相组成和形态，这可能有助于它们的热性能。

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