以钛酸四丁酯和酚醛树脂分别作钛源和碳源,采用溶胶-凝胶法制备TiC前驱体,以Mg粉作为促进剂,用碳热还原法制备纳米TiC.采用XRD和SEM对样品的物相和形貌进行表征.结果表明:TiC前驱体直接碳热还原温度在1380℃才能得到纯的纳米TiC粉末,而添加Mg粉并随着Mg粉加入量的增加可以显著降低碳热还原温度,在碳热还原温度为1200℃时就可以合成纯的纳米TiC粉末,并可以降低反应物配料中碳源的比例和抑制产物TiC颗粒的长大,制得的TiC粉末粒度均匀,颗粒径为50～100 nm.
参考文献
| [1] | Li YL.;Ishigaki T. .Incongruent vaporization of titanium carbide in thermal plasma[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):301-308. |
| [2] | 陈怡元,邹正光,龙飞.碳化钛基金属陶瓷的合成及其应用研究现状[J].钛工业进展,2007(03):5-9. |
| [3] | Lee D W;Alexandrovskii S V;Kim B K.Novel synthesis of substoichiometric ultraflne titaniumcarbide[J].Materials Letters,2004(58):1471-1474. |
| [4] | J. Zhao;X. Ai;Z. Lu .Preparation and characterization of Si_3N4 TiC nanocomposite ceramics[J].Materials Letters,2006(23):2810-2813. |
| [5] | N. Liu;C. Han;Y. Xu .Microstructures and mechanical properties of nanoTiN modified TiC-based cermets for the milling tools[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):122-131. |
| [6] | 罗崇玲,易茂中,谭兴龙,戴煜.新型直接碳化法制备超细WC粉及其烧结体的结构与性能[J].粉末冶金技术,2007(04):243-246,250. |
| [7] | 森维,徐宝强,杨斌,孙红燕,宋建勋,万贺利,戴永年.真空碳热还原法制备碳化钛粉末[J].中国有色金属学报（英文版）,2011(01):185-190. |
| [8] | 胡继林,肖汉宁,李青,郭文明,高朋召.碳热还原法合成TiC-SiC复合粉末及其生长机理[J].中国有色金属学报,2011(05):1131-1136. |
| [9] | Pierre Lefort .Influence of the grain size on the reactvity of TiO2/C mixtures[J].Journal of Alloys and Compounds,2000,302:287. |
| [10] | Setoudeh N;Saidi A;Welham N J .Carbothermic reduction of anatase and rutile[J].Journal of Alloys and Compounds,2005,90:138. |
| [11] | Lopacinsi M;Puszynsi J J .Synthesis of temary titanium aluminum carbides using self-propagating high-temperature synthesis technique[J].American Ceramic Society,2001,84(12):3051-3053. |
| [12] | Zarrinfar N .Carbide stoichiometry in TiC and Cu-Ti produced by self-propagating high-temperature synthesis[J].Scripta Materialia,2002,46:121. |
| [13] | 黎茂祥,苏国钧.溶胶-凝胶和碳热还原法制备碳化钛的研究[J].无机盐工业,2007(07):36-38,47. |
| [14] | 向道平,李元元.碳热还原合成TiC粉末及相演变[J].材料导报,2009(12):106-108. |
| [15] | H.Preiss and D.Schultze .Studies on the carbothermal preparation of titanium carbide from different gel precursors[J].Journal of the European Ceramic Society,1999(2):195-206. |
| [16] | 李世鹏,刘志勇,周辽奇,刘忠侠,王明星.纳米TiC粉末的制备研究[J].材料导报,2008(Z2):134-136. |
| [17] | Zheng Y G;Lu C;Mai Y W .Model-based simulation of normal grain growth in a two-phase nanostructured system[J].Sci Techin Adv Mater,2006,7:812. |
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