niobium

American  

[nahy-oh-bee-uhm] / naɪˈoʊ bi əm /

noun

Chemistry.

1. a steel-gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 K; used chiefly in alloy steels. Nb; 41; 92.906; 8.4 at 20°C.

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niobium British  

/ naɪˈəʊbɪəm /

noun

1. Former name: columbium.  a ductile white superconductive metallic element that occurs principally in columbite and tantalite: used in steel alloys. Symbol: Nb; atomic no: 41; atomic wt: 92.90638; valency: 2, 3, or 5; relative density: 8.57; melting pt: 2469±10°C; boiling pt: 4744°C

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niobium Scientific  

/ nī-ō′bē-əm /

1. A soft, silvery, ductile metallic element that usually occurs in nature together with the element tantalum. It is used to build nuclear reactors, to make steel alloys, and to allow magnets to conduct electricity with almost no resistance. Atomic number 41; atomic weight 92.906; melting point 2,468°C; boiling point 4,927°C; specific gravity 8.57; valence 2, 3, 5.

2. See Periodic Table

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Etymology

Origin of niobium

From New Latin, dating back to 1835–45; Niobe, -ium

Example Sentences

Ionic MT said it discovered high grades of 16 different types of minerals, everything from lithium to alumina, germanium, rubidium, cesium, vanadium and niobium at the site in Utah’s Silicon Ridge.

From The Wall Street Journal

Touted for its superior qualities as a superconductor, niobium was always a promising candidate for quantum technologies.

From Science Daily

"Tungsten, niobium and tantalum were not as effective in this chemical form," Nyman said.

From Science Daily

These metals include titanium, niobium and tungsten, for example.

From Science Daily

The proposed mine’s main product would be niobium that’s used to make steel lighter and stronger.

From Seattle Times