| 摘要 |
<p>A functionally gradient material disclosed is the one obtained by cast-forming slurry containing therein groups of particles of a plurality of types, which are different in specific gravity and sintering the cast slurry, said groups of particles of the plurality of types containing at least a first group of particles and a second group of particles, said first group of particles being a group of non-metallic particles containing one or more groups selected from groups consisting of an oxide, a carbide, a nitride and an acid nitride, which have a specific gravity within the range of 5 - 7 and have the largest particle diameter less than the deflocculation limit, and said second group of particles being a metallic group of particles having a specific gravity of about 1.5 times that of said first group of particles or more and have diameters scattering on both sides of the deflocculation limit. A method of manufacturing this functionally gradient material comprises the steps of: providing the slurry containing the above groups of particles of the plurality of types and/or single slurries of a plurality of types, respectively; suitably supplying the same to a porous mold; and forming a wall forming portion in said porous mold in consideration of the adsorption effect of the porous mold and the deflocculation effect in the slurries of various particles, the influence of gravity or the like. <IMAGE></p> |
