초록 ▼

A disclosed gradient function material is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The fi

A disclosed gradient function material is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The first group of particles comprises a group of non-metal particles having a specific gravity ranging from about 3 to 7 and a maximum particle diameter equal to or smaller than a deflocculation limit, said non-metal particles being made of one or more materials selected from the group consisting of an oxide, a carbide, a nitride, and an oxynitride. The second group of particles comprises a group of metal particles having a specific gravity which is about 1.5 times the specific gravity of said first group of particles, and particle diameters distributed across the deflocculation limit. The gradient function material is manufactured by preparing a slurry containing a plurality of groups of particles and/or a plurality of slurries, and supplying the slurry or slurries into a porous mold to form a deposited region in the porous mold initially primarily influenced by way of attraction of the porous mold and subsequently primarily influenced by a deflocculating effect of the particles in the slurry or slurries or under the influence of the gravity.

대표청구항 ▼

[ We claim:] [1.] A gradient function material produced by cast molding and thereafter firing a slurry which contains at least a first group of particles and a second group of particles, wherein said particles in said first group have a specific gravity which is less than the specific gravity of par

[ We claim:] [1.] A gradient function material produced by cast molding and thereafter firing a slurry which contains at least a first group of particles and a second group of particles, wherein said particles in said first group have a specific gravity which is less than the specific gravity of particles in said second group of particles, characterized in that:the gradient function material has a first region disposed between ends thereof in a casting direction and occupied mostly by particles from said second group of particles, and a composition of said gradient function material varies continuously such that the proportion of particles from said first group of particles increases progressively from said first region toward both of the ends in the casting direction; andsaid composition of said gradient function material continuously varies in said casting direction in a substantially superposed corrugated pattern.