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  2. Tantalum capacitor - Wikipedia

    en.wikipedia.org/wiki/Tantalum_capacitor

    A tantalum electrolytic capacitor is an electrolytic capacitor, a passive component of electronic circuits. ... [32] [33] In search of cheaper alternatives, ...

  3. List of chemical element naming controversies - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_element...

    In 1846, Heinrich Rose discovered that tantalite contained an element similar to tantalum and named it niobium. [7] [8] In the 1860s, it was found that niobium and columbium are the same element and are distinct from tantalum. [9] IUPAC officially adopted niobium in 1950 after 100 years of controversy. [10]

  4. Electron-beam furnace - Wikipedia

    en.wikipedia.org/wiki/Electron-beam_furnace

    Electron-beam furnaces are used for production and refining of high-purity metals (especially titanium, vanadium, tantalum, niobium, hafnium, etc.) and some exotic alloys. [1] The EB furnaces use a hot cathode for production of electrons and high voltage for accelerating them towards the target to be melted.

  5. Refractory metals - Wikipedia

    en.wikipedia.org/wiki/Refractory_metals

    Most definitions of the term 'refractory metals' list the extraordinarily high melting point as a key requirement for inclusion. By one definition, a melting point above 4,000 °F (2,200 °C) is necessary to qualify, which includes iridium, osmium, niobium, molybdenum, tantalum, tungsten, rhenium, rhodium, ruthenium and hafnium. [2]

  6. Coltan - Wikipedia

    en.wikipedia.org/wiki/Coltan

    A piece of columbite–tantalite, size 6.0 × 2.5 × 2.1 cm. Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted.

  7. List of blade materials - Wikipedia

    en.wikipedia.org/wiki/List_of_blade_materials

    These steels can contain 26% to 42% chromium as well as 10% to 22% nickel and 1.5 to 10% of titanium, tantalum, vanadium, niobium, aluminum silicon, copper, or molybdenum, etc., or some combination thereof. [citation needed] H1, produced by Myodo Metals, Japan. Used by Spyderco in their salt water/diving knives.

  8. Tantalum - Wikipedia

    en.wikipedia.org/wiki/Tantalum

    Tantalum is a chemical element; it has symbol Ta and atomic number 73. It is named after Tantalus, a figure in Greek mythology. [11] Tantalum is a very hard, ductile ...

  9. Niobium - Wikipedia

    en.wikipedia.org/wiki/Niobium

    Niobium capacitors are available as alternative to tantalum capacitors, [107] but tantalum capacitors still predominate. Niobium is added to glass to obtain a higher refractive index , making possible thinner and lighter corrective glasses .