固体および液体状態の純鉄の密度

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  • Density of Pure Iron in Solid and Liquid States
  • コタイ オヨビ エキタイ ジョウタイ ノ ジュン テツ ノ ミツド

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Density of pure iron was measured by the sessile drop method, which was improved to measure the density more accurately than that in the past. Photographs of sample were taken from three directions by three cameras, which were installed at intervals of 2/3 π rad on the horizontal plane. From the image on the film, the volume of samples was calculated by means of an auto-scanning type instrument of length measurement. The average value of the volume calculated from the photographs taken from the three direction was regarded as the volume of the sample, and the density was calculated. The relations between density and temperature were as follows:<BR>(This article is not displayable. Please see full text pdf.) <BR>\oindentwhere σ indicates the standard deviation.<BR>The volume change by the phase transformations from β- to γ-phase, from γ- to δ-phase and from δ- to the liquid phase were −0.94, +0.56 and +3.71% respectively. The error of density measurement estimated was ±0.5%.

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  • 日本金属学会誌

    日本金属学会誌 45 (3), 242-249, 1981

    公益社団法人 日本金属学会

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