粘土素地の充てん配列の変化に及ぼす収縮性物質の影響

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In this paper, we have investigated on the packing characteristics of the clay bodies which are affected by the burning shrinkage in the course of the sintering proces from ordinary temperature up to the temperature of 1000℃. Such clay bodies contain absorbed humidity, crystallization water, carbonlike or organic matters, and these combustible matters are gastified in the process of burning, and consequently these bodies are contracted remarkably. The change of the packing arrangement of clay bodies is intricate and some observations were made to analyze these phenomenon. First we took up the Kaolinite clays containing "sericite" as the components, only poor packing densities, comparing to their large contraction, were obtained when they were exposed on the burning schdule. When, on the other hand, we took up the Kaolinite clays containing no "sericite" as the components, the resulted packing properties were dense. The samples containing known amounts of carbon powder (graphite powder used) as the combustible constituent, were also observed, and their packing densities fell significantly in the burning process, and there were intimate relations between these carbon contents (Combustible constituent) and loosening characteristics of the packing arrengements. Consequently, we may say (ε_x-ε_<mx>) values for the clay bodies containing carbon were affected by the heating loss or contraction of the bodies and raw clay itself.
社団法人日本材料学会の論文
1963-09-15

粘土素地の充てん配列の変化に及ぼす収縮性物質の影響

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