【摘 要】
：
以煅烧铝矾土、滑石和石英为原料,设计太阳能热发电储热用原位合成堇青石-莫来石复相陶瓷组成并制备样品,采用XRD、SEM等现代测试技术对样品的性能及微结构进行研究.探讨样品
【机 构】
：
武汉理工大学硅酸盐建筑材料国家重点实验室
【基金项目】
：
国家重点基础研究发展(973)计划
论文部分内容阅读
以煅烧铝矾土、滑石和石英为原料,设计太阳能热发电储热用原位合成堇青石-莫来石复相陶瓷组成并制备样品,采用XRD、SEM等现代测试技术对样品的性能及微结构进行研究.探讨样品相组成及微观结构对储热陶瓷样品抗热震和储热性能的影响.结果表明,原位合成四方柱状莫来石结合原位合成条柱状堇青石可显著提高样品的抗热震性能和储热性能;经1450℃烧成的堇青石-莫来石复相储热陶瓷样品热膨胀系数为3.64×10-6K-1(室温～850℃);储热密度为1416 kJ/kg(0～800℃);热震30次(室温～800℃,气冷)不开裂,且热震后抗折强度增长了28.11％.满足太阳能热发电显热储热材料的要求.
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