Sagwell briefly explains the principle of observing the original morphology of iron powder using an electron microscope. Electron microscopes are categorized by structure and use into several types, and this article focuses on the Scanning Electron Microscope (SEM), which is used to observe the morphology and particle size of iron powder.
As a key tool adopted by Sagwell, the SEM works based on the interaction between electrons and matter. When high-energy incident electrons strike a material’s surface, the excited area generates secondary electrons, Auger electrons, X-rays, backscattered electrons, transmitted electrons, and electromagnetic radiation in visible, ultraviolet and infrared regions.
It also produces electron-hole pairs, lattice vibrations and electron oscillations. In essence, this interaction allows us to obtain physical and chemical information of the sample, such as morphology, composition and crystal structure.
By scanning iron powder with SEM, Sagwell can directly observe the microscopic morphology of powder particles via scan images. With the scale bar on the images, we can roughly check the particle size distribution; professional software and manual sample selection enable more accurate measurement.
Sagwell’s iron powder has irregular morphology, uniform particle size distribution and high purity, suitable for various industries. For more details, please contact us.
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