中文摘要：

以广东徐闻盐场苦卤为原料,氢氧化钠为沉淀剂,采用液相沉淀法制备了晶形好、分散性好的碱式氯化镁晶须。通过元素分析、XRD、SEM及HRTEM测试等手段分别表征了产品的纯度、属性、形貌特征及晶体生长取向。实验发现当反应温度T=35℃,反应时间t=50 h时可获得直晶率好、分散性好的碱式氯化镁晶须。扫描电镜示碱式氯化镁晶须粒度分布均匀、分散性好。本实验不仅生产工艺简单,且生产成本低,可望利用徐闻盐场苦卤进一步中试。

英文摘要：

The basic magnesium chloride whiskers with good whisker quality and smooth surface were synthesized by liquid precipitation reaction method using Xuwen salt field brine as raw materials and sodium hydroxide as the precipitant. The phase,purity,structure of crystal morphology,crystal growth orientationof whiskers samples were characterized by elementary analysis,X-ray diffraction（ XRD）,scanning electron microscopy（ SEM） and high resolution transmission electron microscopy（ HRTEM）. The SEM analysis revealed that the basic magnesium chloride whiskers showed fine dispersive capability,and the distribution of particle sizes was uniformity. The basic magnesium chloride whiskers with a well-defined shape as well as well straight whisker could be obtained under the following conditions： reaction temperature of 35 ℃,and reaction time of 50 h. The preparation method is simple,and the production cost is low in this work. It is thus expected to use Xuwen salt field brine to a large-scale experiment.