材料研究学报  2013, Vol. 27 Issue (4): 375-379

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水热-热解法合成不同形貌的α-Al2O3粉体*

李兆1 江元汝2 赵西成3 赵亚娟2

1. 西安建筑科技大学材料与矿资学院 西安 710055 2. 西安建筑科技大学理学院 西安 710055 3. 西安建筑科技大学冶金工程学院 西安 710055

Controlled Synthesis of α-Al2O3 of Different Shapes via the Hydrothermal-Pyrolysis Method

LI Zhao1 JIANG Yuanru2 ZHAO Xicheng3 ZHAO Yajuan2

1. College of Materials and Mineral Resources, Xi'an University of Architecture And Technology, Xi'an 710055 2. School of Science, Xi'an University of Architecture And Technology, Xi'an 710055 3. College of Metallurgical Engineering, Xi'an University of Architecture And Technology, Xi'an 710055

李兆, 江元汝, 赵西成, 赵亚娟. 水热-热解法合成不同形貌的α-Al₂O₃粉体*[J]. 材料研究学报, 2013, 27(4): 375-379.
. Controlled Synthesis of α-Al₂O₃ of Different Shapes via the Hydrothermal-Pyrolysis Method[J]. Chinese Journal of Materials Research, 2013, 27(4): 375-379.

摘要 相关文章 Metrics 全文: PDF(4648 KB)   摘要: 以Al2(SO4)318H2O 、尿素为原料, 采用水热-热解法制备α-Al2O3粉体。用XRD、SEM对产物进行表征, 研究了水热反应时间、表面活性剂PEG2000、添加剂AlF3等因素对产物形貌的影响。结果表明: 120℃水热反应6 h, 前驱体经1200℃煅烧, 用Al2(SO4)318H2O /尿素体系得到球形α-Al2O3; 分别以表面活性剂PEG2000和AlF3为添加剂, 得到纤维状及片状α-Al2O3。讨论了不同形貌α-Al2O3的形成机制。 Abstract：a-Al2O3 powders with different shapes were prepared from the reaction of aluminum sulfate octadecahydrate and urea by hydrothermal pyrolysis method. The as-prepared products were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effects of reaction time and additives such as PEG 2000 and AlF3 on the morphologies of the products were evaluated. Without additives, spherical a-Al2O3 powders were obtained at 120 oC for 6 h followed by calcination at 1200 oC. When using PEG 2000 and AlF3 as additives, fiber- and tabular-shaped a-Al2O3 powders were obtained under the same reaction conditions respectively. In addition, the reaction mechanisms of the formation of a-Al2O3 powders with different shapes were discussed.      ZTFLH:  TQ12   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2013/V27/I4/375 [1] 范景彪, 李志伟, 骆建敏, 黄艳, 陈楠楠, 米红宇. 基于碳酸镁模板的氮掺杂多孔炭的制备及其电化学性能[J]. 材料研究学报, 2018, 32(8): 599-606. [2] 李子庆, 赫文秀, 张永强, 于慧颖, 李兴盛, 刘斌. 不同氮源对掺氮石墨烯的结构和性能的影响[J]. 材料研究学报, 2018, 32(8): 616-624. [3] 袁有录,李铸国. 柱状碳化物(Cr, Fe)7C3增强Fe基涂层的摩擦磨损性能*[J]. 材料研究学报, 2013, 27(6): 622-630. [4] 申晓毅 孙毅 宋继强 翟玉春. 硫酸铵低温焙烧中低品位氧化锌矿[J]. 材料研究学报, 2012, 26(4): 396-401. [5] 殷大根 朱亚波 杜勇 刘晓霞 刘章生. 微米螺旋碳纤维的电容特性[J]. 材料研究学报, 2012, 26(1): 73-77. Viewed Full text Abstract Cited   Shared      Discussed