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Results 671 - 680 of 899 for Clay
  • Article - 29 Aug 2001
    Improved manufacturing, mechanical and service properties compared with unmodified PA 12.
  • Article - 15 Aug 2001
    Polyester is tougher than Phenolic, DAP, Melamine and Urea. Styrene causes health hazard and can taint products. Relative advantages, disadvantages and applications are listed.
  • Article - 29 Jul 2001
    Black was the first person to recognize magnesium (Mg) as an element in 1755. Later, in 1808, Davy isolated this element by evaporating mercury from a magnesium amalgam.
  • 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 - 20 Jul 2001
    Cobalt is a brittle, hard metal white in appearance resembling nickel but with a bluish tinge instead of the yellow of nickel. It imparts hardness to steels and alloys. Radioactive cobalt 60 has many...
  • Article - 17 Jul 2001
    Americium isotope Am241 was identified by a group of researchers at the University of Chicago in 1944 and was the fourth trans-uranium element to be discovered. It is used as a neutron and gamma...
  • Article - 5 Jun 2001
    Paper, natural fibres, glass, metals and many plastics are used as packaging materials. The reasons for their use and developments in the packaging industry are explained.
  • Article - 3 Apr 2001
    Although beryllia is a toxic ceramic in powder form, it has a number of properties that make it useful in industries ranging from electronics, to nuclear applications through to military and...
  • Article - 3 Apr 2001
    Sintered silicon nitride (Si3NA) can only be densified without pressure with the addition of sintering aids such as magnesia, yttria or alumina.
  • Article - 6 Feb 2001
    Silicon nitride (Si3N4) comes in forms such as reaction bonded, sintered and hot pressed. Excellent thermo mechanical properties have seen this material used for engine parts, bearings, metal...

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