English to German Tech/Engineering Materials (Plastics, Ceramics, etc.)

Metal-ceramic thermocouple protecting tubes:

The chromium-metal phase takes on a very tightly bonded layer of chromium oxide which, together with the naturally inert nature of the alumina, provides this material with its remarkable resistance to oxidizing atmospheres over 1200°C, good corrosion resistance, and the ability to resist wetting by molten metals.