Detection method of grain size distribution for MIM powder in powder injection molding

 The grain size distribution is usually measured by laser granularity analyzer in MIM powder injection molding. Because laser has a good mono chromaticity and extremely strong direction. When light encounters a particle, a portion of the light scatter. 

   The direction of scattered light and the direction of central beam form an angle, whose degree is related to the size of the particle. The larger grain size, the smaller angle for light scattering . The smaller the particle size, the larger angle. Scattering light intensity represents particle quantity. Hence scattered light intensity measured in different angle can get particle size distribution of sample.

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http://www.zcmim.com/article/mimpowderinjectionmoldingdpgadfm_1.html