Free Carbon in Silicon Carbide: Why It Matters More Than You Think

탄화규소의 유리탄소: 생각보다 중요한 이유

Free carbon in silicon carbide is a frequently overlooked impurity that causes measurable problems in sintering, electrical performance, refractory durability, and abrasive consistency. This article explains the formation mechanisms, grade-specific thresholds, measurement methods, and procurement practices engineers need to control it effectively.

How Grit Size Affects Surface Finish: A Practical Guide for SiC Abrasive Users

입자 크기가 표면 마감에 미치는 영향: SiC 연마재 사용자를 위한 실용 가이드

Selecting the wrong grit size for silicon carbide abrasive operations can push components outside dimensional tolerance, initiate fatigue cracking, or force expensive rework. This guide maps SiC grit sizes to achievable Ra values across common engineering materials, outlines correct multi-stage sequencing logic, and identifies the process variables that shift surface finish outcomes in production.

F-Grade vs P-Grade Silicon Carbide: The Standard Behind the Label

F등급과 P등급 실리콘 카바이드: 라벨 뒤에 숨은 표준

F-grade and P-grade silicon carbide share the same grit numbers but follow different FEPA standards with meaningfully different particle size tolerances. This article explains the technical distinctions, maps each grade to its correct application, and outlines what procurement teams should verify before accepting a supplier’s grade declaration.

SiC 순도 인증서가 실제로 알려주는 것과 그렇지 않은 것

A supplier certificate showing 98.5% SiC purity tells only part of the story — free carbon, polytype ratio, 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.