| TC4钛合金压坯的吸氢行为 |
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| 引用本文： | 任学平,郭青苗,侯红亮,章芳芳.TC4钛合金压坯的吸氢行为[J].北京科技大学学报,2009,31(8). |
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| 作者姓名： | 任学平 郭青苗 侯红亮 章芳芳 |
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| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083
2. 北京航空制造工程研究所,北京,100024 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(No.11AZ6305) |
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| 摘 要： | 利用管式氢处理炉研究了TC4钛合金压坯的温度-平衡氢分压关系以及吸氢动力学行为,测定了吸氢速率常数和激活能,并分析了吸氢反应各个阶段的反应机理.结果表明,随着吸氢温度的升高,达到平衡所需要的时间缩短,吸氢后的平衡氢分压升高.在350℃吸氢时,反应机制分别是形核长大、幂函数定律和三维扩散.在400℃吸氢时,反应机制分别是幂函数定律和三维扩散.在450～750℃吸氢时,反应机制均是三维扩散.TC4钛合金压坯吸氢反应的激活能为14.55kJ·mol-1.
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| 关 键 词： | 钛合金 吸氢 动力学行为 反应机制 活化能 |
Hydrogen absorption behavior of TC4 compacts |
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| REN Xue-ping,GUO Qing-miao,HOU Hong-liang,ZHANG Fang-fang.Hydrogen absorption behavior of TC4 compacts[J].Journal of University of Science and Technology Beijing,2009,31(8). |
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| Authors: | REN Xue-ping GUO Qing-miao HOU Hong-liang ZHANG Fang-fang |
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| Abstract: | The relation of equilibrium hydrogen pressure with temperature and the hydrogen absorption kinetic behavior of TC4 compacts were investigated with a tubular hydrogen treatment furnace. The rate constant,reaction mechanisms and activation energy of hydrogen absorption at different temperatures were also determined. It is found that the time to reach equilibrium decreases with increasing temperature,but the equilibrium hydrogen pressure increases with increasing temperature. The hydrogen absorption process at... |
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| Keywords: | titanium alloys hydrogen absorption kinetic behavior reaction mechanism activation energy |
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