niobium
Noun
Meaning
A later name of columbium. See Columbium.
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Although these alloys contain a maximum of 0.1%, the small percentage of niobium enhances the strength of the steel.
Because niobium is oxidized at temperatures above 400 °C, a protective coating is necessary for these applications to prevent the alloy from becoming brittle.
Anionic halide compounds of niobium are well known, owing in part to the Lewis acidity of the pentahalides.
Characteristics Palladium belongs to group 10 in the periodic table, but the configuration in the outermost electron shells is atypical for group 10 (see also niobium (41), ruthenium (44), and rhodium (45)).
Applications A niobium foil Out of 44,500 metric tons of niobium mined in 2006, an estimated 90% was used in high-grade structural steel.
Electron beam melting under vacuum is the method used by the two major distributors of niobium.