Ceramics particle size analysis

Particle size and particle size distribution are defining characteristics of the metal powders influencing key powder properties.

Ceramics play a role in the production of very many items, from tiles, sanitary ware and precision components to dental crowns, implants and bridges, and ceramic powders are used increasingly in additive manufacturing. Typically, the production of ceramic components requires dispersion of the powder in a liquid, followed by compaction to form the desired shape (green body), which is then sintered. Particle size and size distribution help define the sintering time and temperature, to ensure production efficiency and optimal quality. The relationship between particle size and pore size in the green body before sintering also means that pore formation can be controlled by varying the particle size of the raw materials. Finally, the presence of large agglomerates can result in defects during sintering, making particle size measurement essential in process development and control.

Using Laser Diffraction for ceramics

The wide measurement range achieved with laser diffraction particle sizing enables the detection of both well-dispersed particles and agglomerates in a single measurement. As a volume-based technique, laser diffraction is also extremely sensitive to the presence of large particles, making it ideal for monitoring the state of dispersion in ceramic slips.