Boron carbide micro powder detection method

Boron carbide micro powder detection method
Most of the solid particles in industrial production, including abrasive particles, are irregular geometric bodies. In granular measurement, “particle size” is generally used to describe the size of the particles. The diameter here refers to the virtual “equivalent diameter”, and its definition is: when a certain physical characteristics of the measured particles are closest to the most diameter (combination) of a diameter (combination) Measure the equivalent diameter of the particles. The particle size measurement instruments of different principles adopt different physical characteristics measurement particles, so the measurement results of the same product are often different.
In the measurement of boron carbide grinding, the sedimentation method is measured by the size of the sedimentation rate to measure the particle size, and the Kurt method (resistance method) uses the resistance changes caused by particles in the electrolyte to measure the size of the particles; Sanda) Light spot size to measure the size
Laser particle size analyzers are currently the most popular and advanced granular measurement instruments in the world. It uses tiny particles to measure the diffraction phenomenon of light (the smaller the granular diffraction angle, the larger the granules). The diffraction angle of the particles with the same particle size is the same. No matter at any position in the detection area, the lens will focus the diffraction light at a certain angle to the same area. Relationship; Different particles are focused on different areas of the detector, and the distribution of particles can be obtained by measuring the intensity of the diffraction light in these areas. The instrument uses laser as a light source, analyze the data and control the measurement process with a computer.