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Results 1281 - 1290 of 1348 for Powders
  • Article - 1 Aug 2001
    Grain boundaries play an important role in the electrical behaviour of some materials. Control of grain boundaries can influence how well a material performs. A method for measuring the structure of...
  • Article - 31 Jul 2001
    SHS is a process where materials react during a rapid solid state spontaneous reaction at very high temperatures. The rapid heating and cooling and elevated temperatures allow the production of novel...
  • Article - 31 Jul 2001
    Technologies such as ion implantation, CO2 laser treatment and plasma spraying are described. These can be used to alter the surface properties of materials, resulting in increased wear and...
  • 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.