| Novel approaches to produce Al2O3– TiC/TiCN– Fecomposite powders directly from ilmenite |
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| 作者姓名： | Aitao Tang Shengming Liu Fusheng Pan |
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| 作者单位： | College of Materials Science and Engineering,Chongqing University;National Engineering Research Center for Magnesium Alloys;Chongqing Academy of Science&Technology |
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| 基金项目： | financially supported by the national “863” projects Foundations of china (2008AA031101);the Chongqing University Science and Technology Innovation Fund for Graduate (No.CDJXS10131161) |
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| 摘 要： | Al2O3 –TiC/TiCN–Fe composite powders were successfully prepared directly from ilmenite at 1300–1400℃.The effects of Al/C ratio,sintering atmosphere,and reaction temperature and time on the reaction products were investigated.Results showed that the nitrogen atmosphere was bene cial to the reduction of ilmenite and the formation of Al2O3 –TiC/TiCN–Fe composite powders.When the reaction temperature was between 600 and 1100℃,the intermediate products,TiO2,Ti3O5 and Ti4O7 were found,which changed to TiC or TiCN at higher temperature.Al/C ratio was found to affect the reaction process and synthesis products.When Al addition was 0.5 mol,the Al2O3 phase did not appear.The content of carbon in TiCN rose when the reaction temperature was increased.
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| 关 键 词： | Ilmenite Al2O3 TiC TiCN Composite powder Composite materials |
| 收稿时间： | 3 June 2013 |
Novel approaches to produce Al<sub>2</sub>O<sub>3</sub>-TiC/TiCN-Fe composite powders directly from ilmenite |
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| Aitao Tang,Shengming Liu,Fusheng Pan.Novel approaches to produce Al2O3-TiC/TiCN-Fe composite powders directly from ilmenite[J].Progress in Natural Science,2013,23(5):501-507. |
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| Authors: | Aitao Tang Shengming Liu and Fusheng Pan |
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| Institution: | College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
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National Engineering Research Center for Magnesium Alloys, Chongqing 400044, China;College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
b
National Engineering Research Center for Magnesium Alloys, Chongqing 400045, China;College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China Chongqing Academy of Science & Technology, Chongqing 401123, China |
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| Abstract: | Al2O3–TiC/TiCN–Fe composite powders were successfully prepared directly from ilmenite at 1300–1400 °C. The effects of Al/C ratio, sintering atmosphere, and reaction temperature and time on the reaction products were investigated. Results showed that the nitrogen atmosphere was beneficial to the reduction of ilmenite and the formation of Al2O3–TiC/TiCN–Fe composite powders. When the reaction temperature was between 600 and 1100 °C, the intermediate products, TiO2, Ti3O5 and Ti4O7 were found, which changed to TiC or TiCN at higher temperature. Al/C ratio was found to affect the reaction process and synthesis products. When Al addition was 0.5 mol, the Al2O3 phase did not appear. The content of carbon in TiCN rose when the reaction temperature was increased. |
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| Keywords: | Ilmenite Al 2O 3 TiC TiCN Composite powder Composite materials |
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