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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.
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Key words:
- synthesis /
- detonation shock /
- TiC /
- nanometer
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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 
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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
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