| 轻烧MgO的活性对合成镁铝尖晶石晶体结构及性能的影响 |
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| 引用本文： | 彭强,郭玉香,曲殿利,姚焯,王春新,杨雨静.轻烧MgO的活性对合成镁铝尖晶石晶体结构及性能的影响[J].人工晶体学报,2017,46(10):1913-1917. |
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| 作者姓名： | 彭强 郭玉香 曲殿利 姚焯 王春新 杨雨静 |
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| 作者单位： | 辽宁科技大学高温材料与镁资源工程学院,鞍山,114051;辽河油田勘探局石油化工总厂,盘锦,124000 |
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| 基金项目： | 国家科技支撑计划项目(2014BAB02B01) |
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| 摘 要： | 以不同活性的轻烧MgO和α-Al2 O3微粉为原料,通过固相烧结法合成镁铝尖晶石,研究轻烧氧化镁的活性对镁铝尖晶石物相组成、晶胞参数、微观结构及烧结性能的影响并探讨其机理.利用XRD和HighScore Plus分析合成试样的物相组成和晶胞参数,利用SEM表征合成试样的微观结构.结果表明:高活性轻烧MgO具有更高的缺陷能,可以加快烧结反应的进行,降低MgAl2 O4的合成温度;高活性轻烧MgO可以促进MgAl2 O4晶体发育,MgO活性越高,生成的MgAl2 O4晶胞参数和晶胞体积越大,晶粒发育更为完全.
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| 关 键 词： | 轻烧氧化镁 固相烧结法 活性 镁铝尖晶石 晶体结构 |
Influence of MgO Activity on Crystal Structure and Properties of Synthesized Magnesium Aluminate Spinel |
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| PENG Qiang,GUO Yu-xiang,QU Dian-li,YAO Zhuo,WANG Chun-xin,YANG Yu-jing.Influence of MgO Activity on Crystal Structure and Properties of Synthesized Magnesium Aluminate Spinel[J].Journal of Synthetic Crystals,2017,46(10):1913-1917. |
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| Authors: | PENG Qiang GUO Yu-xiang QU Dian-li YAO Zhuo WANG Chun-xin YANG Yu-jing |
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| Abstract: | The magnesium aluminum spinel was synthesized by light calcined magnesia with different activity and α-Al2 O3 by solid-phase sintering process .The effects of MgO activity on phases composition , cell parameters , microscopic structure and sintering properties to magnesium aluminum spinel were researched .And the mechanism was also discussed .The phases composition and cell parameters of synthetic sample were analysed by XRD and HighScore Plus software .The microscopic structure of synthetic sample was characterized by SEM .The results show that the high activity light calcined magnesia has higher defect energy , which can accelerate the sintering reaction and reduce the synthesis temperature of MgAl2O4.The crystals growth of MgAl2O4 was promoted by high activity light calcined magnesia .The cell parameters and the unit cell volume of the MgAl 2 O4 increase with rising MgO activity . And the grain growth is more complete . |
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| Keywords: | light calcined magnesia solid-phase sintering process activity magnesium aluminum spinel crystal structure |
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