CVD Tantalkarbíð (TaC) húðun

TaC coating is usually considered when SiC starts to reach its limits. This happens more often in SiC epitaxy or crystal growth, where both temperature and process atmosphere are more demanding.

With a much higher melting point, TaC handles longer high-temperature exposure better, especially in environments with hydrogen or HCl. In practice, this makes a difference in processes like PVT growth, where thermal stability directly affects crystal quality.

Typical applications include flow guide rings, seed holders, crucible-related parts, and other structures inside the thermal field. These components are exposed to harsh conditions for long periods, so reducing degradation becomes important. In some setups, TaC is gradually replacing older materials like pBN, and even some SiC-coated parts, though this still depends on cost and process design.