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氚老化對海綿鈀吸、放氕氘熱力學性質(zhì)的影響
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中國工程物理研究院材料研究所,中國工程物理研究院材料研究所,中國工程物理研究院材料研究所,中國工程物理研究院材料研究所,中國工程物理研究院材料研究所,中國工程物理研究院材料研究所

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國家自然科學基金資助(項目號21573200)


Tritium aging effects on thermodynamics of sponge palladium absorbing/desorbing protium and deuterium
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Institute of Materials,China Academy of Engineering Physics,Institute of Materials,China Academy of Engineering Physics,Institute of Materials,China Academy of Engineering Physics,Institute of Materials,China Academy of Engineering Physics,Institute of Materials,China Academy of Engineering Physics,Institute of Materials,China Academy of Engineering Physics

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    摘要:

    鈀是氚處理工藝中的關鍵功能材料,氚衰變及其產(chǎn)生的氦會引起鈀的貯氫性能下降。本文對常溫下貯氚老化1.6年的海綿鈀進行了預處理,采用變溫法獲得了老化鈀吸、放氕和氘的PcT曲線,作為對比,同時給出了新鮮鈀的實驗結果,在此基礎上,進行了氚老化鈀吸、放氕和氘熱力學性質(zhì)分析。結果顯示,氚老化會導致鈀氫體系的α相右移、坪臺壓降低、坪臺區(qū)變窄,且老化效應對鈀氫體系的滯后效應、焓變及熵變產(chǎn)生影響。

    Abstract:

    Palladium is an important functional material in tritium treating technology, tritium decay and its product,helium-3 will decrease the properties of hydrogen storage of palladium. The PcT curves of absorbing/desorbing protium and deuterium were measured by the varying temperature method for aged palladium after 1.6 years tritium storage, the experimental results of fresh sponge palladium were provided for comparison in this work, furthermore, thermodynamics of the aged palladium absorbing/desorbing protium and deuterium was analyzed. Comparing with the fresh palladium, tritium aging compel a phase zone to shift right, decreases the plateau pressures of aged Pd-H and Pd-D systems as narrowing down the scope of the plateau pressures, further analyzing shows that the tritium aging weakens the hysteresis effect of palladium absorbing/desorbing hydrogen, affects the enthalpy and entropy changes of the formation of palladium hydride.

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劉孟,朱宏志,蘇永軍,楊金水,丁晶晶,江奕東.氚老化對海綿鈀吸、放氕氘熱力學性質(zhì)的影響[J].稀有金屬材料與工程,2017,46(10):3117~3122.[Liu Meng, Zhu Hongzhi, Su Yongjun, Yang Jinshui, Ding JingJing, Jiang Yidong. Tritium aging effects on thermodynamics of sponge palladium absorbing/desorbing protium and deuterium[J]. Rare Metal Materials and Engineering,2017,46(10):3117~3122.]
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  • 收稿日期:2016-07-22
  • 最后修改日期:2016-12-19
  • 錄用日期:2017-01-06
  • 在線發(fā)布日期: 2017-12-01
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