連続的な傾斜機能材料のスリップキャスティング

概要

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The basic principle behind this study is the utilization of the density difference among the species used and the size difference among the particles within the powders used to influence the sedimentation velocity of particles in a slip. A continuous functionally gradient material was fabricated using the slip casting method. This material is different from conventional functionally gradient materials prepared by other methods in that the composition of this material varies continuously rather than in a layer-by-layer fashion. In a continuous functionally gradient material, problems associated with interfaces between layers or films of different compositions, which are shared among almost all conventional functionally gradient materials, are eliminated. An Al_2O_3-W-Ni-Cr system was used in this study. Processing conditions were reported. Compositional gradients within this type of samples were examined. Thermal expansion, fracture toughness, hardness, and electrical resistance were evaluated.
社団法人日本セラミックス協会の論文
1993-07-01