With its high-temperature stability, chemical stability, and corrosion resistance, chromium oxide can also be used as a functional raw material in certain high-temperature ceramic applications, including thermocouple protection tubes.

Why Is Chromium Oxide Used in Thermocouple Protection Tubes?

Thermocouple protection tubes are designed to protect temperature-sensing elements in high-temperature environments. Depending on the application, they may be exposed to high temperatures, molten materials, gases, or corrosive media.

Chromium oxide can be incorporated into suitable ceramic formulations to provide high-temperature stability and resistance to harsh environments. It is generally used together with other ceramic raw materials rather than as the only material.

What Should Be Considered?

The performance of a finished ceramic tube depends on many factors, including raw material composition, particle size, forming process, and sintering conditions.

Therefore, the required chromium oxide specification may vary depending on the application. Cr₂O₃ purity, particle size, and impurity levels are important factors when selecting chromium oxide for high-temperature ceramic materials.

From pigments and ceramic glazes to refractory and high-temperature ceramic applications, chromium oxide continues to demonstrate its value as a versatile industrial raw material.