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Results 4251 - 4260 of 4364 for Vacuum
  • An Insight to Cadmium
    Article - 20 Jul 2001
    In 1817, German chemist Friedrich Strohmeyer discovered cadmium from an impurity of zinc carbonate (ZnCO3). Cadmium derives from the Latin term ‘cadmia’ and the Greek word ‘kadmeia’, which are ancient...
  • Calcium
    Article - 20 Jul 2001
    Calcium (Ca) is placed in group IIA of the periodic table along with St, Ba and Ra. The name calcium is derived from the Latin word “calas” meaning lime, which was known as early as the first...
  • Invar - Nickel Iron Alloy
    Article - 29 May 2001
    Invar has the lowest thermal expansion of any known metal or alloy from room temperature up to 230?C. Special low expansion and sealing alloy grades are available. Applications include thermostats,...
  • Molybdenum Disilicide (MoSi2)
    Article - 28 May 2001
    Molybdenum disilicide (MoSi2), a refractory metal silicide, is mainly used as a heating element and has been recognized as a potential structural ceramic
  • Ethylene-Chlorotrifluoroethylene - ECTFE
    Article - 7 May 2001
    Melt processable with good high frequency electrical characteristics. Relative advantages, disadvantages and appliances are listed together with a table of typical properties.
  • An Introduction to Materials on Display
    Article - 11 Apr 2001
    This article looks at technologies that have been used for displays for video output. The materials and technologies associated with emerging technologies such as LCD's, PDP's, FED's are described as...
  • Zirconium Carbide (ZrC)
    Article - 3 Apr 2001
    The lack of a fully developed, commercially viable sintering process has limited the use of zirconium carbide (ZrC) in engineering applications.
  • Powder Metallurgy - Component Manufacture by Uniaxial Pressing
    Article - 7 Mar 2001
    Component production using powder metallurgy is described. Processes involved are compaction (unixial pressing), sintering, sizing and finishing operations such as machining, heat treatment and...
  • Powder Metallurgy - Processing
    Article - 28 Feb 2001
    The numerous powder compaction and sintering processes including uniaxial pressing, hot and cold isostatic pressing and sintering are described herein.
  • Boron Nitride (BN) - Properties and Information on Boron Nitride
    Article - 12 Feb 2001
    Boron nitride comes in two forms, hexagonal and cubic boron nitrides. Both are syntheised in different ways. Hexagonal boron nitride is similar in many ways to graphite, while cubic boron nitride...

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The primary distinction between graphene-based batteries and solid-state batteries lies in the composition of either electrode. Although the cathode is commonly changed, carbon allotropes can also be employed in fabricating anodes.

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