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采用固相反应烧结法制备了原位生长莫来石棒晶增强钡长石复合材料,研究了原料体系、烧成温度对试样相组成、致密化和显微结构的影响。结果表明(1)粘土-碳酸钡-氧化铝体系可以得到原位莫来石棒晶增强钡长石复合材料,而氧化硅-碳酸钡-氧化铝体系则不能;(2)两个原料体系烧成试样的相组成不同影响其致密化程度;(3)原位莫来石棒晶增强钡长石复合材料中莫来石棒晶形成空间网状结构,棒晶长径比随烧成温度升高而降低。
Solid-state reaction sintering was used to prepare in-situ growth of mullite rod-reinforced barium carbonate composite. The influence of the raw material system and sintering temperature on the phase composition, densification and microstructure of the sample was studied. The results show that (1) clay-barium carbonate-alumina system can obtain in-situ mullite rod-reinforced barium carbonate composite, while silica-barium carbonate-alumina system can not; (2) (3) In-situ mullite rod-reinforced barite composite materials mullite rod forming a spatial network structure, rod crystal aspect ratio with the firing temperature Increase and decrease.