-
摘要: 本文利用奥克托今炸药（HMX）作为高温、高压源，二氧化钛（TiO2）和活性炭（C）作为前驱体，采用爆炸冲击合成的方法制备纳米碳化钛（TiC）粉末。运用X射线衍射分析仪(XRD)、X射线能谱分析仪(EDS) 及扫描电子显微镜(SEM) 对样品进行了分析与表征。探讨了爆炸冲击波作用下TiC的合成机理。结果表明：XRD和EDS测试值与理论值相符性很好，样品中同时含有TiC和TiCx（x＜1）；SEM照片显示TiC和TiCx（x＜1）的粒径均小于50 nm，样品中存在微米级的球形团聚体；爆炸冲击合成TiC属于特殊的固相反应，其物质扩散速度和反应速度大大提高。Abstract: Nano titanium carbide (TiC) powder was synthesized by detonation shock utilizing octogen (HMX) as high temperature and high pressure source with titanium dioxide (TiO2) and activated carbon (C) as precursors. The samples were characterized by X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and scanning electron microscope (SEM). At the same time, detonation shock synthesis mechanism of nanometer TiC was discussed in this paper. It was concluded that the test results of XRD and EDS were in good agreement with the theoretical values, and the sample contained both TiC and TiCx (x＜1). The particle size of both TiC and TiCx (x＜1) were less than 50 nm by SEM photos and micron-sized spherical agglomerates were found in the samples. The detonation shock synthesis of TiC belongs to a special solid-phase reaction, and its material diffusion rate and reaction rate are greatly improved.
-
Key words:
- synthesis /
- detonation shock /
- TiC /
- nanometer
-
Figure 1. Experimental device
1. precucers; 2. HMX; 3. electric detonator; 4. reaction vessel; 5. methylmethacrylate; 6. steel sleeve; 7. bed plate
Table 1. EDS spectrum of integral sample
Element Line Weight/% C K 23.36 O K 12.51 Al K 1.67 Si K 18.87 Ti K 42.20 Fe K 1.39 Total 100.00 
下载: 导出CSV
Table 2. EDS spectrum of Spherical aggregate
Element Line Weight/% C K 28.14 O K 22.87 Al K 2.11 Si K 6.91 Ti K 36.33 Fe K 3.64 Total 100.00
下载: 导出CSV
-
[1] LIU Y, ZENG L K. Titanium carbide ceramics and their applications [M]. Beijing: Chemical Industry Press, 2008. [2] CHEN Y Y, ZOU Z G, LONG F. Synthesis of TiC-based cermet and the status-quo of its research and application [J]. Titanium Industry Progress, 2007, 24(3): 5–9. DOI: 10.3969/j.issn.1009-9964.2007.03.002. [3] GRITZALIS D. Reliability, quality and safety of software-intensive systems [M]. Boston: Springer, 1997. DOI: 10.1007/978-0-387-35097-4. [4] OUCHI H, NAGANO K, HAYAKAWA S. Piezoelectric properties of Pb(Mg1/3Nb2/3)O3—PbTiO3—PbZrO3 solid solution ceramics [J]. Journal of the American Ceramic Society, 1965, 48(12): 630–635. DOI: 10.1111/j.1151-2916.1965.tb14694.x. [5] MORELLI T, FOLEY J, LIEBERMAN L, et al. Pet-N-punch: upper body tactile/audio exergame to engage children with visual impairments into physical activity [C]// Proceedings of Graphics Interface 2011. St. John's: ACM, 2011: 223−230. [6] WANG J S, ZHOU M L, ZHANG J X, et al. A study on titanium carbide produced by combustion synthesis [J]. Journal of Beijing Polytechnic University, 1998, 24(3): 29–33. [7] LOHSE B H, CALKA A, WEXLER D. Effect of starting composition on the synthesis of nanocrystalline TiC during milling of titanium and carbon [J]. Journal of Alloys and Compounds, 2005, 394(1/2): 148–151. DOI: 10.1016/j.jallcom.2004.09.074. [8] PREISS H, BERGER L M, SCHULTZE D. Studies on the carbothermal preparation of titanium carbide from different gel precursors [J]. Journal of the European Ceramic Society, 1999, 19(2): 195–206. DOI: 10.1016/S0955-2219(98)00190-3. [9] KOC R, FOLMER J S. Carbothermal synthesis of titanium carbide using ultrafine titania powders [J]. Journal of Materials Science, 1997, 32(12): 3101–3111. DOI: 10.1023/A:1018634214088. [10] GUO H M, SHU W B, QIAO S R, et al. Thermodynamic and kinetic studies on chemical vapor deposition process of TiC [J]. Journal of Materials Engineering, 1998(10): 25–29. [11] CHEN C K, LIU Z Y, XIANG J Y, et al. Study on synthesis mechanism of nano-TiC powders prepared by mechanical alloying [J]. Journal of Yanshan University, 2012, 36(2): 136–140. DOI: 10.3969/j.issn.1007-791X.2012.02.008. [12] WANG Z S, LIU Y C, ZHENG M, et al. Study on the attenuating model of detonation shock wave in the PMMA gap [J]. Journal of Basic Science and Engineering, 2001, 9(4): 316–319. DOI: 10.3969/j.issn.1005-0930.2001.04.004. [13] SEN W. Preparation of micron titanium carbide powder by carbothermal reduction TiO2 method [D]. Kunming: Kunming University of Science and Technology, 2011. [14] PREISS H, LUTZ-MICHAEL B, SCHULTZE D. ChemInform abstract: studies on the carbothermal preparation of titanium carbide from different gel precursors [J]. ChemInform, 1999, 30(17). DOI: 10.1002/chin.199917295. [15] WEN M F, WANG Q P, CHEN J, et al. Study on the crystal transformation of nano-titania [J]. Journal of Functional Materials, 2004, 35(5): 651–653. DOI: 10.3321/j.issn:1001-9731.2004.05.042. [16] YANG J, LIN Z M, CUI M, et al. Synthesis of Si3N4 by silicon combustion in air [J]. Journal of Inorganic Materials, 2007, 22(4): 590–594. DOI: 10.3321/j.issn:1000-324x.2007.04.003. [17] WANG J X, YANG S Y, HE H L, et al. Study on the mechanism of PZT95/5 powder synthesis by shock waves [J]. Chinese Journal of high Pressure Physics, 2007, 21(3): 322–326. DOI: 10.11858/gywlxb.2007.03.018. [18] WANG J X, YANG S Y, HE H L, et al. Structure and properties of Pb(Zr0.95Ti0.05)O3 powder synthesized by shock-wave technique [J]. Journal of the Chinese Ceramic Society, 2005, 33(6): 718–722. DOI: 10.3321/j.issn:0454-5648.2005.06.012. -
图(4) / 表(2)
计量
- 文章访问数: 3301
- HTML全文浏览量: 1099
- PDF下载量: 47
- 被引次数: 0