Mechanically driven b.c.c. TiCr alloy and its hydrogen solubility
Mechanically driven b.c.c. TiCr alloy and its hydrogen solubility
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DOI：
10.1016/j.jallcom.2005.01.116
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发表时间：
2005-12
影响因子：
6.2
通讯作者：
H. Yabe;T. Kuji
中科院分区：
文献类型：
--
作者：
H. Yabe;T. Kuji
本研究采用机械合金化的方法制备了钛铬二元混合物，并对其相结构和相应的氢溶度进行了讨论。根据二元平衡相图，室温下钛在铬中的溶解度非常有限。这是因为钛与相图中间存在的极稳定的Laves相(TiCr2)处于平衡状态。在本研究中，证明了机械合金化可以形成Ti-CrB.C.C。在室温下的相态。讨论了机械合金化过程中产生的过剩能量对TiCrB.C.C.形成的影响。相位。合成的钛铬合金粉末的P-C等温线显示出吸放氢的能力。特别是Ti80Cr20氢化物的稳定性要求很高，即使在10 、4 Mpa的压力下，也能达到2−wt.%左右的高氢含量。此外，Ti80Cr20氢化物被鉴定为F.C.C.在5.5Mpa和313 K下，氢含量为3.4 wt.%的结构。
In this study, Ti–Cr binary mixtures were prepared by mechanical alloying and the phase structure and corresponding hydrogen solubility were discussed. According to the binary equilibrium phase diagram, solubility of Ti in Cr at room temperature is very limited. This is because Ti is in equilibrium with the extremely stable Laves phase (TiCr2)existing in the middle of the phase diagram. In this study, it was demonstrated that mechanically alloying yielded formation of Ti–Cr b.c.c. phase at room temperature. It was discussed how the excess energy derived during mechanical alloying works on the formation of Ti–Cr b.c.c. phase. P –C isotherms of the synthesized Ti–Cr alloy powders show the capability of hydrogen absorption and desorption. Especially, the Ti80Cr20hydride should be very stable so that the high hydrogen content around 2 wt.% even at 10−4MPa was shown. In addition, the Ti80Cr20hydride was identified as f.c.c. structure with hydrogen content was 3.4 wt.% at 5.5 MPa and 313 K.