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首页> 外文期刊>Journal of Ceramic Processing Research. (Text in English) >A novel processing route for whisker shaped mullite-alumina composites from kaolin
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A novel processing route for whisker shaped mullite-alumina composites from kaolin

机译：高岭土晶须状莫来石-氧化铝复合材料的新型加工路线

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摘要

Whisker shaped mullite/particulate alumina composites prepared by a two-step in situ processing route have been characterized in terms of their microstructure and mechanical properties.Well-developed mullite whiskers were firstly formed at 1300°C for 15 h and subsequently sintered at higher temperatures(<=1650 °C).A liquid phase was formed by the reaction of SiO2 and Al2O3,aided by the presence of Na2O and P2O5;these additions improved the formation and growth of mullite whiskers.The mechanical properties of the sintered materials appeared to be mainly governed by the grain size of the major phase,the presence of voids,and an intergranular glass.
机译：通过两步原位加工工艺制备的晶须状莫来石/颗粒氧化铝复合材料的微观结构和力学性能均得到了表征。成熟的莫来石晶须首先在1300°C形成15h，然后在更高的温度下烧结。 （<= 1650°C）.SiO2和Al2O3的反应形成液相，在Na2O和P2O5的存在下进行辅助;这些添加物改善了莫来石晶须的形成和生长。主要受主要相的晶粒尺寸，空隙的存在和晶间玻璃的控制。

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