Improving hydrogen permeability and sustainability of Nb30Ti35Co35 eutectic alloy membrane by substituting Co using Fe
Improving hydrogen permeability and sustainability of Nb30Ti35Co35 eutectic alloy membrane by substituting Co using Fe
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Fe替代Co提高Nb30Ti35Co35共晶合金膜的氢渗透性和可持续性
DOI：
10.1016/j.ijhydene.2020.08.101
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发表时间：
2020-09
影响因子：
7.2
通讯作者：
Dongmei Liu
中科院分区：
文献类型：
--
作者：
Kunjun Zhu;Xinzhong Li;Guohuai Liu;Yuxin Yang;Jingjie Guo;Zhaodong Wang;Dongmei Liu
研究了Nb 30 Ti 35 Co 35-xFex（x = 0，5，10，15，20）合金的显微组织和渗氢性能。当Fe含量小于15at%时，铸态Nb_（30）Ti_（35）Co_（35-x）Fe_x合金锭呈现完全共晶组织。当Fe含量高于15at%时，初生bcc-（Nb，Ti）相与共晶组织结合出现。用Fe取代Co导致氢溶解度略有增加，但氢渗透性大大增强，这主要来自于增加的氢浓度无关的扩散系数D。当Fe含量为10at%时，Nb 30 Ti 35 Co 35-xFe_x膜在673 K下的氢渗透试验中表现出稳定的氢渗透通量，且在72 h内均高于Nb 30 Ti 35 Co 35膜。Nb_（30）Ti_（35）Co_（35-x）Fe_x合金为完全共晶结构，在氢气气氛下冷却至室温时，未出现氢致失效，表明该膜在低温范围内具有潜在的应用价值。当Fe含量为10at%时，合金的透氢性和抗氢脆性达到最佳组合，因为Fe含量的进一步增加导致了与Nb_（30）Ti_（35）Co_（25）Fe_（10）合金相当的D_（max），但氢溶解度更高。
The microstructure and hydrogen permeation performance of Nb30Ti35Co35-xFex(x = 0, 5, 10, 15, 20) alloys have been investigated. With Fe less than 15 at%, the as-cast Nb30Ti35Co35-xFexingots exhibit fully eutectic structure. When the Fe content is higher than 15 at%, primary bcc-(Nb, Ti) phase appears in combination with eutectic structure. Substituting Co using Fe leads to slightly increased hydrogen solubility but highly enhanced hydrogen permeability, which comes mainly from the increased hydrogen concentration-independent diffusion coefficientD∗. With Fe content up to 10 at%, Nb30Ti35Co35-xFexmembranes exhibit stable and higher hydrogen permeation flux than Nb30Ti35Co35at 673 K during hydrogen permeation test up to 72 h. Nb30Ti35Co35-xFexalloys of fully eutectic structures exhibit no hydrogen-induced failure when cooled down to room temperature under hydrogen atmosphere, indicating the potential application of the membrane at lower temperature range. An optimal combination of hydrogen permeability and hydrogen embrittlement resistance is achieved at 10 at% Fe, since further increase of Fe leads to comparableD∗ as that of Nb30Ti35Co25Fe10but higher hydrogen solubility.
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影响因子：
3.2
作者：
S. A. Steward
通讯作者：
S. A. Steward
氢渗透与抗脆化联合增强的(Nb,Mo)40Ti30Ni30合金膜设计
影响因子：
4.6
作者：
Li X;Liang X;Liu D;Chen R;Huang F;Wang R;Rettenmayr M;Su Y;Guo J;Fu H
通讯作者：
Fu H
影响因子：
7.2
作者：
Mehmet Gurz;E. Baltacioǧlu;Yakup Hameş;Kemal Kaya
通讯作者：
Mehmet Gurz;E. Baltacioǧlu;Yakup Hameş;Kemal Kaya
影响因子：
1.2
作者：
T. Takano;K. Ishikawa;T. Matsuda;K. Aoki
通讯作者：
T. Takano;K. Ishikawa;T. Matsuda;K. Aoki
DOI：
10.1063/1.3158619
发表时间：
2009-06
期刊：
The Journal of chemical physics
影响因子：
--
作者：
Shiqiang Hao;D. Sholl
通讯作者：
Shiqiang Hao;D. Sholl