TaC Guide Rings: The Unsung Component Inside SiC Growth Furnaces
2026-07-17
Silicon carbide (SiC) single-crystal growth and epitaxy typically run at furnace temperatures above 1500°C, with reactive gases such as hydrogen, hydrogen chloride, and silane flowing through the chamber. Graphite is the standard structural material inside these furnaces — it conducts heat well, machines easily, and costs relatively little. But it has one clear weakness: under prolonged exposure to high temperature and corrosive atmospheres, graphite gradually erodes, and the resulting carbon particles contaminate the crystal or epitaxial layer growing nearby.
