【摘要】 以硫酸亚钛,氨水,硝酸铵和黑索金炸药为主要原料,结合沉淀法和爆轰技术对爆轰合成纳米二氧化钛进行了研究,同时利用X射线粉晶衍射仪（XRD）和高分辨透射电子显微镜（HRTEM）等对爆轰灰及经过在空气中500℃,1h处理后的爆轰灰进行测试分析,结果表明：收集的爆轰灰是以金红石和锐钛矿相的二氧化钛为主粒径为（30±10）nm的球形超微粉,同时含有少量的杂质(Ti₇O₁₃和C)．经过500℃,1h的热处理除杂后,制备的二氧化钛纳米粉末仍为金红石和锐钛矿相组成的混晶,金红石相和锐钛矿相的相对含量比为9：1,二氧化钛晶粒有轻微长大现象。更多还原

【Abstract】 Combining precipitation method with detonation technology,Ti₂（SO₄）₃,NH₃·H₂O,NH₄NO₃ and RDX（C₃H₆N₆O₆）as the main raw materials,were employed to prepare nanosized TiO₂ particles.The morpholo- gies of detonation soot before and after heated at 500℃for 1h in the air had been studied by X-ray diffraction （XRD）and high resolution transmission electron microscopy（HRTEM）.The results indicated that detonation soot with nanosized TiO₂ particles was composed of the rutile and anatase phases in addition to some impurities, such as the C and Ti₇O₁₃,and that the average particle size of the nanosized TiO₂ particles is（30±10）nm.After being annealed at 500℃for 1h in air,detonation soot showed only nanosized TiO₂ particles with the rutile and anatase phase in 9:1.To some extent the average particle size of the as-prepared TiO₂ grew up slightly after thermal treatment.更多还原