sem的eds和mapping什么区别

就定量来说，SEM点分析比线分析和面分析更准确，扫描的方式不同，线分析和面分析只能定性的分析观察视场的元素分布情况（线分析是沿着某个界面的元素分布起伏，而面分析是看整个视场的元素分布情况），点分析可以基本定量分析元素。

SEM/EDS是扫描电子显微镜和X-射线能量色散谱仪的简称，两者组合使用，功能非常强大，既能观察微区的形貌又能对微区进行成分分析，在各类分析工作中被广泛运用。

EDS mapping时间就长的多了，尤其是如果想得到比较确定的数据的话，一个线扫就可以耗费半个小时。EDS mapping的分辨率不仅取决于束斑尺寸，由于收集时间比较长，样品漂移的影响更大，所以比eels mapping 差不少。

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After firing, the final powders were sieved. The crystalline phases of doped LiFe0.9 Mg0.1 PO4 pow- ders were identified by X-ray diffraction using a Rigaku AFC5 diffractometer with a Cu K radiation. The diffraction data was collected at 0.02 (degree sign) step width over a 2θ range from10◦ to 90◦ . 在焚烧后，最终的粉末进行过筛。掺杂的LiFe0.9 Mg0.1PO4粉末的结晶相用采用Cu Kα辐射的RigakuAFC5衍射仪进行X射线衍射法鉴定。衍射数据在从10°到90°范围的2θ上以0.02（度符号）的步宽进行采集。The particle size was observed by scanning electron microscopy (SEM) images using a FEI Quanta 200 equipped with energy dispersive spectroscopy (EDS).离子尺寸用扫描电子显微镜（SEM）图像观察，该SEM为配备能量色散谱仪（EDS）的FEI Quanta 200。

The LiFe0.9 Mg0.1 PO4 pellet used for the electronic conductivity measurement was prepared by die-pressing LiFe0.9 Mg0.1 PO4 powders (without carbon and binders) with a pressure of 3 tonnes cm−2 , and then coating with Ag paste on both sides. The size of the pellet was around 1.3 cm diam- eter with 0.06 cm thickness. The electronic conductivity of LiFe0.9 Mg0.1 PO4 was measured by both linear polarization using Solartron 1287 and EIS using Solartron 1287/1260.

用于电子电导测量的LiFe0.9 Mg0.1 PO4颗粒用模压压制LiFe0.9 Mg0.1 PO4粉末（不含碳和黏结剂）而制备，压力为3t cm－2，然后用Ag糊在两面涂覆。颗粒的尺寸大约为1.3 cm直径和0.06cm厚度。LiFe0.9 Mg0.1 PO4的电子电导率可以用线性极化法，也可用EIS法测量。前者用Solartron1287，后者用Solartron1287/1260.

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