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  • Improving the Efficiency of Tungsten Filament Light Bulbs
    Article - 25 Jul 2002
    Although tungsten-filament bulbs are the world’s most extensively used light source, they are inefficient and generate more heat than light.
  • Tungsten Applications - Electrical Applications
    Article - 16 Feb 2002
    The only material that is practically used for electron emitters is tungsten. Although there are other electropositive metals that yield higher emission rates, tungsten has an extremely low vapor...
  • Tantalum - An Overview
    Article - 23 Jan 2002
    Tantalum is a rare metal with a grey-blue appearance. It is found in about 15% of the world’s pegmatites. Tantalum has several properties that currently make it a valuable commodity.
  • Ceramic Brazing
    Article - 29 Nov 2001
    Ceramic brazing techniques are used to join ceramics to other materials. Sometimes the use of intermediate layers are required to increase wetting of the materials to enable creation of a suitable...
  • Steel Plant Developments
    Article - 24 Sep 2001
    New technologies are being developed for the steel industry to enhance efficiency and productivity and ensure competitiveness. Some of these include electric arc furnaces and new casting technologies....
  • ElectroActive Polymers - EAPs
    Article - 17 Sep 2001
    Electroactive polymers (EAPs) are those, which respond to external electrical stimulation by displaying a significant shape or size displacement. They have shown promise to mimic the movements of...
  • Gobel X-Ray Mirrors
    Article - 23 Aug 2001
    Gobel mirrors are special mirrors designed for the reflection of x-rays. Produced using pulsed laser deposition they have advantages such as increased primary intensity, more forgiving in the area of...
  • Self Propogating High Temperature Synthesis of Magnetic Materials
    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...
  • Smart Materials
    Article - 28 Feb 2001
    Smart materials are able to respond to changes in their surroundings. They have potential applications in aerospace and civil engineering. Work continues on refining these materials down to the...
  • Positive Temperature Co-Efficient of Resistivity (PTCR) Materials - An Overview
    Article - 14 Feb 2001
    There are materials that exhibit a rapid rise in resistivity when heated above the Curie Temperature. Generally ceramics with a titanate structure, they are used in temperature control applications.

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