Niobium oxide, archaically called columbium oxide, may refer to: * Niobium monoxide (niobium(II) oxide), NbO *

Niobium dioxide Niobium dioxide, is the chemical compound with the formula NbO2. It is a bluish-black non-stoichiometric solid with a composition range of NbO1.94-NbO2.09. It can be prepared by reducing Nb2O5 with H2 at 800–1350 °C. An alternative method i ...

(niobium(IV) oxide), NbO₂ *

Niobium pentoxide Niobium pentoxide is the inorganic compound with the formula Nb2 O5. A colorless, insoluble, and fairly unreactive solid, it is the most widespread precursor for other compounds and materials containing niobium. It is predominantly used in alloyi ...

(niobium(V) oxide), Nb₂O₅ In addition to the above, other distinct oxides exist *general formula Nb_3n+1O_8n−2 where n ranges from 5 - 8 inclusive, e.g. Nb₈O₁₉ (Nb₁₆O₃₈). * Nb₁₂O₂₉ and Nb₄₇O₁₁₆ Natural niobium oxide is sometimes known as ''niobia''.

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