| タイトル | Preparation of multistage zone-refined materials for thermochemical standards |
| 著者（英） | Glicksman, M. E.; Singh, N. B.; Rubinstein, E.; Fang, Q. T.; Mangum, B. W. |
| 著者所属（英） | National Bureau of Standards|Westinghouse Research and Development Center|Rensselaer Polytechnic Inst.|Aluminum Co. of America |
| 発行日 | 1988-06-01 |
| 言語 | eng |
| 内容記述 | This paper describes the steps of a two-step zone purification procedure for completed minicells filled with ultrahigh-purity succinonitrile (SCN) in which the CNS is under its own vapor pressure. The solid-liquid equilibrium, as determined by melting and freezing point measurements, is therefore considered to be a realization of the triple-point. The freezing-point plateaus measured at a variety of bath temperatures demonstrated both the fundamental reproducibility of the measurement for a given sample and the lack of dependence of that measurement on the bath temperature which controls the freezing rate. The measurement reproducibility and the sample consistency indicate that the method described is indeed suitable for the preparation of pure material which can be used for the purposes of thermistor and thermometer calibration at 58.0796 + or - 0.0015 C. |
| NASA分類 | MATERIALS PROCESSING |
| レポートNO | 88A43172 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/370142 |
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