Low temperature synthesis of nanocrystalline α-Al_2O_3 by a tartaric acid gel method

H. Gocmez; O. Oezcan

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Low temperature synthesis of nanocrystalline α-Al_2O_3 by a tartaric acid gel method

机译：酒石酸凝胶法低温合成纳米晶α-Al_2O_3

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Nanocrystalline alumina was synthesized by a simple sol-gel method using aluminum nitrate in tartaric, oxalic and acetic acids mixed aqueous solutions. The alumina gel was successfully transferred to α-Al_2O_3 with this process after subsequent low temperature heat treatment. The prepared gel and powders were characterized by X-ray diffractometry (XRD), thermogravimetry-differential thermal analysis, scanning electron microscopy and transmission electron microscopy. The XRD analysis showed that the complete transformation from γ-Al_2O_3 nanocrystalline to α-Al_2O_3 (37 nm) prepared in tartaric acid was observed at 925 ℃.

机译：纳米晶氧化铝是通过简单的溶胶-凝胶法，使用硝酸铝在酒石酸，草酸和乙酸混合水溶液中合成的。在随后的低温热处理后，氧化铝凝胶成功地转移到了α-Al_2O_3中。通过X射线衍射（XRD），热重分析-差热分析，扫描电子显微镜和透射电子显微镜对所制备的凝胶和粉末进行表征。 X射线衍射分析表明，在925℃观察到从酒石酸制备的γ-Al_2O_3纳米晶完全转变为α-Al_2O_3（37 nm）。

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《Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing》 |2008年第2期|p.20-22|共3页
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H. Gocmez; O. Oezcan;
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Low temperature synthesis of nanocrystalline α-Al_2O_3 by a tartaric acid gel method

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