| 钾掺杂钨合金中气相热充氘的热脱附行为 |
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| 引用本文： | 郑振华,叶小球,吴吉良,蒋春丽,杨飞龙,桑革.钾掺杂钨合金中气相热充氘的热脱附行为[J].稀有金属材料与工程,2021,50(3):1000-1006. |
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| 作者姓名： | 郑振华 叶小球 吴吉良 蒋春丽 杨飞龙 桑革 |
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| 作者单位： | 中国工程物理研究院材料研究所,表面物理与化学重点实验室,表面物理与化学重点实验室,表面物理与化学重点实验室,中国工程物理研究院材料研究所,中国工程物理研究院材料研究所 |
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| 基金项目： | 国家磁约束核聚变能发展研究专项课题(2015GB109002) |
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| 摘 要： | 钾(K)掺杂钨(W)合金已经表现了优异的高温力学性能,成为最有希望的PFMs备选材料之一。为评估氢同位素在W-K合金中的滞留情况,采用放电等离子烧结技术(SPS),制备了纯W及K含量82μg/g的W-K合金,通过气相热充法引入氘(D)元素,考察热脱附行为。研究表明,气相热充氘释放温区从600K延伸至1200K,掺杂K后,D脱附活化能从0.86 eV下降到0.68 eV;纯W样品D滞留量在1×10-6(原子比)左右,掺杂K后有所提高,但依然大大优于商用ITER级纯W。
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| 关 键 词： | 面向等离子体材料 钾掺杂钨合金 气相热充 热脱附 氘滞留 |
| 收稿时间： | 2020/4/24 0:00:00 |
| 修稿时间： | 2020/6/11 0:00:00 |
Thermal Desorption Behavior of Deuterium by Gas-phase Thermal Charge from Potassium Doped Tungsten Alloy |
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| ZHENG Zhenhu,YE Xiaoqiu,WU Jiliang,JIANG Chunli,YANG Feilong and SANG Ge.Thermal Desorption Behavior of Deuterium by Gas-phase Thermal Charge from Potassium Doped Tungsten Alloy[J].Rare Metal Materials and Engineering,2021,50(3):1000-1006. |
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| Authors: | ZHENG Zhenhu YE Xiaoqiu WU Jiliang JIANG Chunli YANG Feilong and SANG Ge |
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| Affiliation: | Institute of Materials,China Academy of Engineering Physics,Science and Technology on Surface Physics and Chemistry Laboratory,Science and Technology on Surface Physics and Chemistry Laboratory,Science and Technology on Surface Physics and Chemistry Laboratory,Institute of Materials,China Academy of Engineering Physics,Institute of Materials,China Academy of Engineering Physics |
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| Abstract: | As the most promising plasma facing materials(PFMs),potassium doped tungsten alloy exhibits excellent high temperature mechanical properties.In order to evaluate the hydrogen isotope residence in WK alloy,the pure W and the WK alloys doped with 82μg/g potassium were prepared by spark plasma sintering(SPS).After deuterium was introduced into potassium doped tungsten alloy by gas-phase thermal charge,thermal desorption spectra(TDS)were obtained at different heating rates.The results show that deuterium release occurs gradually at 600~1200 K.And after doping K,the activation energy of thermal desorption of deuterium reduces from 0.86 to 0.68 e V.The retention of deuterium in tungsten sample is less than 1×10-6(atom ratio)and it is enhanced with doping K,but still lower than that of commercial pure W alloy. |
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| Keywords: | Plasma-Facing Materials Potassium Doped Tungsten Alloy Gas-phase Thermal Charge Thermal Desorption Deuterium Retention |
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