Deoxidation of Ti–Al intermetallics via hydrogen treatment
Deoxidation of Ti–Al intermetallics via hydrogen treatment
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DOI：
10.1016/j.ijhydene.2010.05.115
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发表时间：
2010-09
影响因子：
7.2
通讯作者：
Yan-Qing Su;Xinwang Liu;L. Luo;Longmao Zhao;Jingjie Guo;H. Fu
中科院分区：
文献类型：
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作者：
Yan-Qing Su;Xinwang Liu;L. Luo;Longmao Zhao;Jingjie Guo;H. Fu
通过一种名为氢处理(HT)的简单方法对Ti-47Al合金进行脱氧，即在熔化过程中用氢进行脱氧。高温后，由于氢分压的增加和熔化时间的延长，合金中的氧含量大大降低。活化的氢原子在高温下解离，熔化室中的氢分子似乎影响还原反应，其方程为：O+2H=H2O和O+H2=H2O。根据吉布斯自由能变化的比较，发现氢原子在还原过程中起主要作用。
Alloys of Ti–47Al were deoxidized via a simple method called hydrogen treatment (HT), which involves deoxidation with hydrogen in a melting process. Because of the increase in the partial pressure of hydrogen and the melting duration, the oxygen content of the alloys greatly decreased after HT. Activated hydrogen atoms dissociated at high temperatures, and the hydrogen molecules in the melting chamber seemed to affect the deoxidation reactions, which are represented by the following equations: O+2H=H2O and O+H2=H2O. Based on a comparison of the changes in Gibbs free energy, the hydrogen atoms were found to play a major role in deoxidation.