| U－23at％Zr合金的焓、比热容和相变潜热 |
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| 引用本文： | 张莉丽,李文,黄英. U－23at％Zr合金的焓、比热容和相变潜热[J]. 计量学报, 1996, 0(4) |
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| 作者姓名： | 张莉丽 李文 黄英 |
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| 作者单位： | 中国原子能科学研究院 |
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| 摘 要： | 用下落式铜卡计法测量了室温到１０７３Ｋ之间Ｕ－２３ａｔ％Ｚｒ（即Ｕ－１０ｗｔ％Ｚｒ）合金的焓，计算了８８０Ｋ以下相应的平均比热容和微分比热容。在焓－温度曲线上观察到在８８９、９３４、９６１Ｋ左右焓值的跳跃，这是和Ｕ－Ｚｒ系相图上固相线下前三个相变温度相对应的。算得相应的相变潜热分别是５７９、１１８和２８１２Ｊ／ｍｏｌ。
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| 关 键 词： | 焓比热容 相变潜热 |
Enthalpy,Specific Heat of the U-23at%Zr Alloy and Enthalpy Change for Phase Transitions |
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| Zhang Lili,Li Wentan,Huang Ying. Enthalpy,Specific Heat of the U-23at%Zr Alloy and Enthalpy Change for Phase Transitions[J]. Acta Metrologica Sinica, 1996, 0(4) |
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| Authors: | Zhang Lili Li Wentan Huang Ying |
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| Abstract: | The enthalpy of the U 23at%Zr alloy was measured by drop calorimetry ranging from room temperature to 1037K. The average and true specific heat were calculated from 350K to 880K.The jumps of enthalpy change were observed from the dependence of enthalpy change on temperature at about 889,934 and 961K, which are apparently consistent with those indicated in the phase diagram.The calculated enthalpy changes at the transitions are 579,118 and 2812J/mol respectively. |
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| Keywords: | Enthalpy Specific heat Enthalpy change for phase transitions |
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