| 湿化学法合成纳米ZrB2粉末 |
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| 引用本文： | 张 云,李锐星,姜沿杉,赵 斌,李军平,冯志海.湿化学法合成纳米ZrB2粉末[J].无机化学学报,2011,27(9):1788-1792. |
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| 作者姓名： | 张 云 李锐星 姜沿杉 赵 斌 李军平 冯志海 |
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| 作者单位： | 1. 北京航空航天大学材料科学与工程学院空天材料与服役教育部重点实验室,北京,100191
2. 航天材料及工艺研究所,北京,100076 |
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| 基金项目： | 国家自然科学基金(No.50974007); 国家人力资源和社会保障部2010年度高层次留学人才回国工作资助(人社厅函2010,No.411); 北京航空航天大学新进教师条件建设(No.280101)资助项目 |
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| 摘 要： | 本文利用ZrO2-B2O3-C体系中碳热还原的基本原理,分别使用正丙醇锆(Zr(OC3H7)4)、硼酸(H3BO3)和蔗糖(C12H22O11)为原料,采用溶胶-凝胶法合成了ZrB2纳米粉末。在实验设计过程中,首先使用化学修饰剂乙酰丙酮(acac)修饰Zr(OC3H7)4,目的是防止Zr(OC3H7)4的快速水解;其次,选用蔗糖作为碳源,是考虑到蔗糖热解时可以完全分解为碳,这样可以准确计算热解过程碳的生成量。结果表明:当起始原料nB/nZr=2.3、热解温度为1550℃时,通过溶胶-凝胶法可以成功合成单相ZrB2纳米粉末。分布均匀的颗粒形貌呈等轴状,平均尺寸约50 nm。
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| 关 键 词： | 纳米颗粒 合成 溶胶-凝胶 ZrB2 |
Synthesis of ZrB2 Powder by Wet Chemical Method |
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| ZHANG Yun,LI Rui-Xing,JIANG Yan-Shan,ZHAO Bin,LI Jun-Ping and FENG Zhi-Hai.Synthesis of ZrB2 Powder by Wet Chemical Method[J].Chinese Journal of Inorganic Chemistry,2011,27(9):1788-1792. |
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| Authors: | ZHANG Yun LI Rui-Xing JIANG Yan-Shan ZHAO Bin LI Jun-Ping and FENG Zhi-Hai |
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| Institution: | Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China and Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China |
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| Abstract: | Zirconium diboride(ZrB2) nanoparticles were synthesized by sol-gel method using zirconium n-propoxide(Zr(OC3H7)4),boric acid(H3BO3),and sucrose(C12H22O11).Additionally,acetylacetone(acac) was used as chemical modifier to stabilize Zr(OC3H7)4 which hydrolyzes easily.Here,C12H22O11 was used since it can be completely decomposed to carbon.Thus,carbon might be accounted precisely for the carbothermal reduction reaction.A single phase ZrB2 could be obtained with a molar ratio of nB/nZr=2.3 for the starting mater... |
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| Keywords: | nanoparticles synthesis sol-gel ZrB2 |
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