【摘要】 采用醋酸钙和碳酸钠为原料,在反应温度为5℃和柠檬酸三钠质量百分浓度为15%的条件下,采用沉淀法合成出了粒度为1～4μm、分散性好的球形碳酸钙粉体。用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、红外光谱仪(IR)、原子力扫描探针显微镜(ASPM)、光学显微镜、粒度分析仪等对样品进行了表征,并用光学显微镜跟踪考察了碳酸钙微米球的形成过程。结果表明,碳酸钙微米球是由大量纳米级颗粒组装而成。更多还原

【Abstract】 The uniform spherical calcium carbonate particles with granular size 1~4μm were prepared from a calcium acetate and sodium calcium solution at 5℃ by using precipitation method,and mass percent concentration of trisodium citrate 15%.The obtained CaCO3 samples were characterized by means of Scanning electron microscope(SEM),X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),Atomic force scanning probe microscopy(ASPM),Optical microscopy and Grain size analyzer.The formation process of calcium carbonate micro-spheres are observed though optical microscopy.The results showed that the calcium carbonate micro-spheres were assembled by a large number of nanometer particles.更多还原