The preparation and related properties of dispersions of ceramics in metallic matrices are reviewed, with particular reference to recent British work in this field. There have been substantial advances in the fabrication of cermets by powder metallurgy, particularly those based on UO2 or PUO2 and stainless steel, it being now possible to manufacture almost perfect dispersions in bar or strip form. Some closer understanding of the mechanical properties of cermets or porous matrices has been achieved. These theoretical and technological developments are capable of wide application to non-nuclear materials.
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