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Chromium Compounds
   Chromium carbide
   Chromium(IV) oxide
Chromium carbide Cr3C2
An extremely hard refractory ceramic material, is highly corrosion-resistant, and does not oxidize even at high temperature (1000-1100°C). Chromium carbide is used as a thermal spray material for protecting the underlying metal surface, and as an additive to corrosion-resistant and wear-resistant materials. It is used in coatings of bearings, seals, orifices, and valve seals.
Chromium(IV) oxide CrO2
A synthetic magnetic substance once widely used in magnetic tape. With the increasing popularity of CDs and DVDs, the use of chromium(IV) oxide has declined. However, it is still used in data tape applications for enterprise-class storage systems. It is still considered today by many oxide and tape manufacturers to have been the most perfect magnetic recording particulate ever invented.