| 摘要 |
A high performance ceramic composite containing tungsten carbide reinforced chromium carbide matrix in which 5 DIFFERENCE 35 vol % of tungsten carbide particles are uniformly dispersed in 65 DIFFERENCE 95 vol % of chromium carbide matrix. The diameters of the tungsten carbide and chromium carbide particles are preferably in the rage between 0.1 DIFFERENCE 10 mu m, and their average diameters are preferably at about 2.0 and 1.5 mu m, respectively. The tungsten carbide/chromium carbide composite is prepared from a sintering process by applying heat and pressure to a green compact containing tungsten carbide and chromium carbide particles, without using a metallic sintering aid. As a result, the tungsten carbide reinforced chromium carbide composite retains all the advantageous characteristics of the chromium carbide material, such as excellent strength, hardness, anti-oxidation, anti-scaling, anti-erosion and anti-corrosion properties as well as excellent permanent non-magnetizability and surface lustrousness, while providing improved flexural strength and fracture toughness. The tungsten carbide reinforced chromium carbide composite is most suitable for industrial applications where reliability is critical.
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