Particle-shape schematics, not microscopy or a size scale. Chemistry and powder architecture are separate selection criteria.
Start with the task closest to yours. The examples identify material requests; a proposed grade still needs to fit your process and evaluation.
Thermal-filler formulation
Use the filler identity and shape already required by your resin or host-material formulation. Compare treated, platelet, spherical and agglomerated forms separately.
Begin with the intended electrical function and the material system permitted by your formulation. Elemental metals and doped oxides have different identities and analytical briefs.
Here, the matrix is the resin or other host material; loading is the amount of powder added. State whether that amount is by weight or volume.
A reference datasheet or your existing material code is useful. If you are still exploring, describe what you are making and which result needs to change.
