| C0基、Ni基、Fe基、Ti基金属间化合物在H2中的脆化 |
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| 引用本文： | 姚美意,万晓景,陈业新,倪建森.C0基、Ni基、Fe基、Ti基金属间化合物在H2中的脆化[J].上海大学学报(英文版),2001,4(Z1). |
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| 作者姓名： | 姚美意 万晓景 陈业新 倪建森 |
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| 作者单位： | 上海大学 材料科学与工程学院, |
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| 摘 要： | 本文通过测量Co3Ti、 Ni3Al、 Fe3Al、 TiAl四种金属间化合物在氧气、氢气中在2×10-4/s形变速率下的拉伸性能，研究了
其在氢气中的室温环境脆性.研究结果表明，上述四利金属间化合物在H2中的脆化程度(用氢脆因子
IH2=(δo2一δH2)/δo2]×100％表示)是不同的，其大小依次为Co3Ti＞Ni3 Al＞Fe3Al＞TiAl.其脆化程度的差异用金属间化合物中
基体金属对氢气的催化裂解作用的强弱进行了很好的解释.
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| 关 键 词： | 金属间化合物 环境氢脆 催化反应 |
Environmental Embrittlement of Fe-based, Co-based, Ni-based and Ti-based Intermetallics in Gaseous Hydrogen |
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| YAO Mei-yi,WAN Xiao-jing,CHEN Ye-xin,NI Jian-sen.Environmental Embrittlement of Fe-based, Co-based, Ni-based and Ti-based Intermetallics in Gaseous Hydrogen[J].Journal of Shanghai University(English Edition),2001,4(Z1). |
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| Authors: | YAO Mei-yi WAN Xiao-jing CHEN Ye-xin NI Jian-sen |
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| Abstract: | The environmental embrittlement of intermetallics Co3Ti, Ni3Al, Fe3Al and TiA1 has been investigated by measuring the tensile
properties in oxygen and hydrogen at 2×10-4/s strain rate. The results show that the hydrogen embrittlement factor in gaseous hydrogen
(IH2) defined as(δo2 -δH2 )/δH2 ] ×l00% of above mentioned four intermetallics is decreased in the sequence of Co3Ti＞ Ni3Al＞
Fe3Al＞ TiA1. This phenomena can be explained by the different catalytic reaction on the surface of matrix metals (such as Ni, Co, Fe, Ti)
with decomposition of H2 into atommic hydrogen, leading to hydrogen embrittlement. |
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