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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
  • 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
  • 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 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
  • Facts About Niobium - Live Science
    Properties, sources and uses of the element niobium, and facts about its unusual history
  • Niobium alloy - Wikipedia
    The most common commercial niobium alloys are ferroniobium and nickel-niobium, produced by thermite reduction of appropriate mixtures of the oxides; these are not usable as engineering materials, but are used as convenient sources of niobium for specialist steels and nickel-based superalloys
  • What Is Niobium Used for in Everyday Life? - ScienceInsights
    Niobium is a silvery metal that quietly shows up in more of your daily life than you’d expect Around 90% of global niobium consumption goes into steel production, where even tiny additions make structural steel dramatically stronger and lighter
  • What Is Niobium? Properties, Uses, and Industrial Applications
    Discover what niobium is, its key properties, benefits, alloys, price factors, and industrial applications in steel, aerospace, medical, and energy sectors





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