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  2. Titanium - Wikipedia

    en.wikipedia.org/wiki/Titanium

    Titanium is superconducting when cooled below its critical temperature of 0.49 K. [21] [22] ... Relation between voltage and color for anodized titanium.

  3. Titanium dioxide - Wikipedia

    en.wikipedia.org/wiki/Titanium_dioxide

    Titanium dioxide, also known as titanium(IV) oxide or titania / t aɪ ˈ t eɪ n i ə /, is the inorganic compound derived from titanium with the chemical formula TiO 2. When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. [4] It is a white solid that is insoluble in water, although mineral forms can appear ...

  4. Thermochromism - Wikipedia

    en.wikipedia.org/wiki/Thermochromism

    The colors are intense and seem to be caused by Cu(I)–Hg(II) charge-transfer complexes. [7] Silver mercury iodide (Ag 2 [HgI 4]) is yellow at low temperatures and orange above 47–51 °C, with intermediate yellow-orange states. The colors are intense and seem to be caused by Ag(I)–Hg(II) charge-transfer complexes. [7]

  5. Tempering (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Tempering_(metallurgy)

    The various colors, their corresponding temperatures, and some of their uses are: Faint-yellow – 176 °C (349 °F) – gravers, razors, scrapers ... titanium, and ...

  6. Titanium nitride - Wikipedia

    en.wikipedia.org/wiki/Titanium_nitride

    Titanium nitride (TiN; sometimes known as tinite) is an extremely hard ceramic material, often used as a physical vapor deposition (PVD) coating on titanium alloys, steel, carbide, and aluminium components to improve the substrate's surface properties.

  7. Anatase - Wikipedia

    en.wikipedia.org/wiki/Anatase

    Nevertheless, anatase is often the first titanium dioxide phase to form in many processes due to its lower surface energy, with a transformation to rutile taking place at elevated temperatures. [7] Although the degree of symmetry is the same for both anatase and rutile phases, there is no relation between the interfacial angles of the two ...

  8. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...

  9. Color of chemicals - Wikipedia

    en.wikipedia.org/wiki/Color_of_chemicals

    The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .