Search

Search Results
Results 191 - 200 of 223 for Alumina 99.5%
  • Article - 13 Mar 2002
    Concrete has been around since 5600BC. Developments since then are outlined including the discovery of portland cement. The composition and hydration or 'curing' of portland cements are explained as...
  • Article - 29 Nov 2001
    Powder injection moulding (PIM) and powder co-injection moulding (PCM) are similar to polymer injection moulding. They are used to produce shaped components from powders and are suited to ceramic,...
  • 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...
  • Article - 29 Nov 2001
    Although ceramics have many beneficial properties, all-ceramic machines are rare, hence, the joining of ceramics to other materials is a vital technology. Methods vary from simple to mechanical means...
  • Article - 9 Oct 2001
    There are several different types of zirconia such as partially stabilised versions and tetragonal zirconia polycrystals.
  • Article - 9 Oct 2001
    Clay-based nanocomposites are generally combinations of clays and polymers. Intercalated hybrids maintain a clay-like structure, with increased spacings between layers, while in exfoliated hybrids the...
  • Article - 24 Sep 2001
    Although production costs for composite materials (polymer, ceramic and metal matrix) are coming down, it is difficult for them to become accepted materials for aeroengine applications. Thus article...
  • Article - 31 Jul 2001
    Bicomponent extrusion is a novel process for producing ceramic fibres with distinct core and sheath phases. These materials have potential use in metal and ceramic matrix composites and have the...
  • Article - 8 Jun 2001
    Superplastic forming is an alternative and novel method for producing dental implants. It is capable of producing complex prostheses that are lighter, more comfortable and stronger than similar...
  • Article - 2 Jun 2001
    Tooth filling materials such as silver amalgams, resin-based composites and ion-leachable glass cements are covered. Cast metals, bonded restorations, ceramics and composite implant materials are also...