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《Journal of Synthetic Crystals》 2011-02
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Study on Low-temperature Synthesis of Iron-stabilized Aluminum Titanate via Non-hydrolytic Sol-gel Method

JIANG Wei-hui,HU Zi,LIU Jian-min,ZHU Qing-xia,FENG Guo(Jiangxi Key Laboratory of Advanced Ceramic Materials,School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333001,China)  
Iron-stabilized aluminum titanate powder was prepared via the non-hydrolytic sol-gel method,using anhydrous aluminum chloride and titanium tetrachloride as precursors,anhydrous ethanol as oxygen donor,iron powder,iron chloride and iron ethoxide as iron stabilizers.The effect of iron stabilizers on the low-temperature synthesis of Al2TiO5 was investigated,and their role and their mechanism in stabilizing Al2TiO5 were also explored by XRD,FT-IR and dilatometer.The results show that iron powder makes no improvement in both the low-temperature synthesis and thermal stability of Al2TiO5;although iron chloride can facilitate the synthesis,it has little effect on the stability;in contrast,iron ethoxide isn' t beneficial to the synthesis,but could make great improvement in the thermal decomposition resistance of Al2TiO5.Iron ethoxide could react with the aluminum ethoxide and the titanium ethoxide in the precursor mixed solution to form the heterogeneous bonds,which enables iron enter the lattice of aluminum titanate to form the solid solution.As a result,the thermal stability of Al2TiO5 is improved.
【Fund】: 国家自然科学基金(50762005 50962006)资助项目;; 江西省自然科学基金(2010GZC0103)资助项目;; 江西省青年自然科学基金项目(2009GQC0074)资助项目
【CateGory Index】: TB383.3
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【Citations】
Chinese Journal Full-text Database 6 Hits
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1 LU Hong-bin1,CHEN Jian-hua2,FENG Chun-xia1,LI Wen-dan3,JIAO Bao-xiang1 (1. College of Material Engineering,Yancheng Institute of Technology,Yancheng 224003,China;2. Key Laboratory for New Functional Materials of Jiangsu Province,Changshu Institute of Technology,Changshu 215500,China;3. College of Material Science and Engineering,Nanjing University of Technology,Nanjing 210009,China);Effect of magnesia and silica additives on properties of aluminium titanate ceramic[J];Ordnance Material Science and Engineering;2008-03
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