Wat het SiC-zuiverheidscertificaat u feitelijk vertelt – en wat niet
A supplier certificate showing 98.5% SiC purity tells only part of the story — free carbon, polytype verhouding, and trace metals below 100 ppm often go unreported yet directly drive refractory failures and sintering defects. This article explains what each analytical method actually measures, which critical parameters standard COAs omit, and what supplementary documentation to require before approving any SiC shipment.