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Results 1291 - 1300 of 1355 for Powders
  • Article - 30 Jul 2001
    Iron (Fe) is a metal that has been known since ancient times. In fact, the Earth’s crust is made up of 5% of iron, which is the second most abundant metal after aluminum.
  • Article - 29 Jul 2001
    Molybdenum is silvery-white, very hard refractory metal, however, it is softer and more ductile than tungsten and is readily worked or drawn into very fine wire. Primary uses are as an alloying...
  • Article - 29 Jul 2001
    Tin (Sn) is mostly found in cassiterite (SnO2) and has been known since ancient times. It is obtained by reducing the ore with coal in a reverberatory furnace.
  • Article - 28 Jul 2001
    Although lead occurs as such in nature, it is rare. Lead is chiefly obtained from galena (PbS) through the process of roasting.
  • Article - 26 Jul 2001
    This article provides details on how aluminium nitride is produced, key properties and its applications, including microelectronics.
  • Article - 23 Jul 2001
    Uranium is a heavy, silver-white metal resembling nickel. It is malleable, ductile, slightly paramagnetic and pyrophoric when finely divided. Its main uses are as a nuclear fuel, radioactive isotope...
  • Article - 23 Jul 2001
    Ancient Chinese and Hindus were familiar with mercury (Hg). The metal was also found in Egyptian tombs of 1500 BC. Mercury rarely occurs as such in nature.
  • Article - 23 Jul 2001
    Metallic zinc was produced in India by reducing calamine with organic substances like wool, in the 13th century A.D. Marggraf rediscovered zinc in 1746 and showed that metallic zinc could also be...
  • Article - 23 Jul 2001
    Platinum (Pt) was discovered by Ulloa in 1735 and Wood in 1741. Platinum occurs as such naturally, together with negligible amounts of palladium, iridium, rhodium, osmium, and ruthenium.
  • Article - 21 Jul 2001
    Silver metal in its pure state has a brilliant white metallic lustre and it is a little harder than gold and is very ductile and malleable. It has 3 commercial types and applications in jewellery,...