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AssigneesSumitomo Electric Industries, Ltd., Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi
InventorsYoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi, Osamu Komura, Eiji Kamijo, Masaaki Honda, Akira Yamakawa
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The present invention relates to a method of sintering ceramics and ceramics obtained by said method. According to the present invention, the synthesis and sintering of ceramics can be simultaneously carried out by utilizing the reaction heat generated when at least one metallic element selected from metallic elements of IIIb, IVa, Vb and VIb groups of the Periodic Table is combined with at least one nonmetallic element such as B, C, N and Si without heat or by preliminarily heating the ceramics at temperatures remarkably lower than the usual sintering temperature ceramics, thus-produced are superior in abrasion resistance and corrosion resistance. Furthermore, according to the present invention, particles of the same kind of metal as that used in constructing the ceramics comprising the above described metallic elements and nonmetallic elements are dispersed in a matrix comprising said ceramics to obtain metal dispersed reinforced ceramics in which both the matrix and the metallic particles are strongly and chemically bonded to each other. According to the latter procedure ceramic materials having high temperature characteristics, high corrosion resistance and high abrasion resistance, as well as high toughness and high impact resistance can be obtained.
Metal reinforced ceramics containing spherical metallic particles dispersed in the ceramics said metallic particles being made of the same metallic particles used in synthesizing the ceramics, said ceramics being synthesized by an exothermic reaction of a mixture comprising at least one material selected from the group consisting of metallic elements of IIIb, IVb, Vb, and VIb groups of the Periodic Table and at least one nonmetallic element selected from the group consisting of B, C, N and Si, to strongly and chemically bond said metallic particles to said matrix.
Dependencies are inferred from the claim text.