| Bi_2O_3对低温燃烧合成堇青石粉性能的影响 |
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| 引用本文： | 何英,黄兆龙,翟凤瑞,刘贵阳,闵勇.Bi_2O_3对低温燃烧合成堇青石粉性能的影响[J].蒙自师范高等专科学校学报,2010,8(2):1-4. |
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| 作者姓名： | 何英 黄兆龙 翟凤瑞 刘贵阳 闵勇 |
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| 作者单位： | 红河学院理学院; |
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| 基金项目： | 云南省教育厅科学研究基金项目(08Y0340) |
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| 摘 要： | 采用X射线衍射、扫描电镜和EDS能谱分析等手段研究了Bi2O3对低温燃烧法制备的非化学计量组成的MgO-Al2O3-SiO2三元系堇青石基微晶玻璃的相变和烧结特性的影响.研究结果表明:添加Bi2O3能明显促进μ-堇青石向α-堇青石的相转变或促进α-堇青石相的直接析晶,使α-堇青石相的析出温度从1050°C降到900°C;Bi2O3的加入可促进玻璃粉体的烧结致密化;Bi2O3的添加量以5%(质量分数)左右为宜,加入量太大会阻止微晶玻璃的晶化.
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| 关 键 词： | 氧化铋 低温燃烧 堇青石基微晶玻璃 相变 烧结致密化 |
EFFECT OF BISMUTH OXIDE ADDITION ON THE PHASE TRANSFORMATION AND SINTERINGOF CORDIERITE POWDER VIA LOW TEMPERATURE COMBUSTION |
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| HE Ying,HUANG Zhao-long,ZHAI Feng-rui,LIU Gui-yang,MIN Yong.EFFECT OF BISMUTH OXIDE ADDITION ON THE PHASE TRANSFORMATION AND SINTERINGOF CORDIERITE POWDER VIA LOW TEMPERATURE COMBUSTION[J].Journal of Mengzi Teachers' College,2010,8(2):1-4. |
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| Authors: | HE Ying HUANG Zhao-long ZHAI Feng-rui LIU Gui-yang MIN Yong |
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| Institution: | 1.College of Science/a>;Honghe University/a>;Mengzi 661100/a>;China |
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| Abstract: | Cordierite - based glass ceramics with non - stoichiometric composition and containing different amounts of Bi203, were prepared by low - temperature combustion technique. The effect of Bi2O3 on the phase transformation and sintering of MgO -Al2O3 -SiO2 cordierite -based glass ceramics was studied using XRD, SEM and EDS. The results showed that Bi2O3 addition obviously improves the formation of a -cordierite phase from u -cordierite or glass. Bi2 O3 addition lowers the crystallization temperature of a -cordiefite phase from about 1050℃ to 900 ℃. Bi2O3 addition can improves the densification of sinter, the amount of Bi2O3 addition shows a condign numerical value at about 5% （ wt % ）, too much Bi2O3 added will inhibit the crystallization. |
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| Keywords: | bismuth oxide low-temperature combustion cordierite glass-ceramics phase transformation sintering densification |
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