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niobium    音标拼音: [n,ɑɪ'obiəm]
n. 铌

铌

niobium
n 1: a soft grey ductile metallic element used in alloys; occurs
in niobite; formerly called columbium [synonym: {niobium},
{Nb}, {atomic number 41}]

Columbium \Co*lum"bi*um\, n. [NL., fr. Columbia America.]
(Chem.)
A rare element of the vanadium group, first found in a
variety of the mineral columbite occurring in Connecticut,
probably at Haddam. Atomic weight 94.2. Symbol Cb or Nb. Now
more commonly called {niobium}.
[1913 Webster]


niobium \ni*o"bi*um\, n. [NL., fr. L. & E. {Niobe}.] (Chem.)
The chemical element of atomic number 41. Chemical symbol Nb.
Atomic weight 92.91. Previously called {columbium}. See also
{Columbium}.
[1913 Webster]

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  • Niobium - Wikipedia
    Niobium is a chemical element; it has symbol Nb (formerly columbium, Cb) and atomic number 41 It is a light grey, crystalline transition metal Pure niobium has a Mohs hardness rating similar to pure titanium, [8] and it has similar ductility to iron
  • Niobium | Properties, Uses, History of the Chemical Element - Britannica
    Niobium, chemical element, refractory metal of Group 5 (Vb) of the periodic table, used in alloys, tools and dies, and superconductive magnets Niobium is closely associated with tantalum in ores and in properties
  • What is Niobium? - Vital Metals
    What is Niobium? Niobium (Nb) is a ductile refractory metal that is highly resistant to heat and wear It is resistant to corrosion owing to the formation of a surface oxide layer Approximately 90% of niobium use is attributed to the steel industry, predominantly as a micro alloy with iron
  • Niobium - Element information, properties and uses | Periodic Table
    The main source of this element is the mineral columbite This mineral also contains tantalum and the two elements are mined together Columbite is found in Canada, Brazil, Australia, Nigeria and elsewhere Some niobium is also produced as a by-product of tin extraction
  • Niobium Facts, Symbol, Discovery, Properties, Uses
    Niobium (pronounced as ni-OH-bee-um) belongs to the family of transition metals, denoted by the chemical symbol Nb Defined as a soft and ductile metal with eighteen isotopes, it is available in the form of foil, sheet, tube, rod, and powder
  • Niobium and Tantalum Statistics and Information - USGS. gov
    Statistics and information on the worldwide supply of, demand for, and flow of the mineral commodities niobium (columbium) and tantalum
  • Home • Niobium
    Niobium, Inc is a brand of Niobium Microsystems, Inc The encrypted cloud has arrived
  • North American Niobium – North American Niobium
    Advancing onshore production of critical minerals in North America, including niobium, neodymium, and praseodymium, metals deemed essential by Canada and the U S due to strategic importance and limited domestic supply
  • Niobium Technology Applications - niobium. tech
    Niobium helps solve complex engineering challenges cost effectively and makes modern projects more efficient Smarter structural materials lead to design freedom and lower consumption
  • Niobium: The unseen element - A comprehensive examination of its . . .
    Niobium, a critical but often overlooked material, plays a crucial role in the Anthropocene era Serving as a microalloying element in steel, typically at concentrations of 0 05–0 15 wt %, niobium significantly enhances steel properties





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