Meaning
Optical measurement techniques analyze the angle of scattered light from a laser beam passing through a dispersed powder sample to calculate size distribution. Sourcing departments rely on laser diffraction particle analysis to verify the d10, d50, and d90 values of battery raw materials. This method operates on the principle that smaller particles scatter light at wider angles than larger particles.
It provides a fast, repeatable metric for quality control in cathode production.
Distribution Measurement
Scattered light intensity is recorded by multi element photodetectors, and mathematical models convert these signals into volume percentages. This calculation assumes that all analyzed particles are spherical.
Technical Boundary
Dry dispersion methods can break fragile agglomerates, while wet dispersion relies on surfactants to prevent particle re-agglomeration. Choosing the correct dispersion method ensures accurate results for cohesive battery powders.
Purchase Choice
Procurement specifications define the testing parameters, including dispersion pressure and refractive index, to ensure data consistency between suppliers. This consistency reduces material rejection rates.
