Optimum design and hydrogen permeability of Nb-Ti-Co separation alloy: I. Construction of phase diagram and hydrogen permeable component region

被引：0

作者：

Huang H.-R. ^{[1
]}

Yan E.-H. ^{[1
]}

Min R.-N. ^{[1
]}

Zhu K.-J. ^{[2
]}

Zhao G.-W. ^{[3
]}

Li X.-Z. ^{[2
]}

Xu F. ^{[1
]}

Sun L.-X. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin

[2] School of Materials Science and Engineering, Harbin Institute of Technology, Harbin

[3] College of Mechanical and Power Engineering, Three Gorges University, Yichang

来源：

Yan, Er-Hu (yeh@guet.edu.cn) | 2018年 / Central South University of Technology卷 / 28期

基金：

中国国家自然科学基金;

关键词：

CALPHAD; Hydrogen permeable component region; Nb-Ti-Co alloy; Solidification path;

D O I：

10.19476/j.ysxb.1004.0609.2018.10.13

中图分类号：

学科分类号：

摘要：

In the present work, Nb-Ti-Co phase diagram in the Nb-rich region was constructed by using CALPHAD method and Thermo-calc software, and then the solidification paths of 58 kinds of alloys were studied by using the uniform microsegregation model. The influences of solid back diffusion coefficient and solidification rate on their solidification path were discussed. The microstructure of these alloys was observed by SEM and XRD, which was compared with the numerical simulation results. Finally, the hydrogen permeable component region in the Nb-Ti-Co phase diagram was established. The results show that: (1) Two equilibrium reactions, i.e. L+α-Nb→TiCo+Co 6 Nb 7 and L+TiCo→ α-Nb+Ti 2 Co, exist in the Nb-Ti-Co phase diagram. (2) There are at least four different solidification paths in the Nb-rich region, as follows, (L+α-Nb), (L+α-Nb)→(L+α-Nb+Co 6 Nb 7 )→(L+α-Nb+Co 6 Nb 7 +TiCo), (L+α-Nb)→ (L+α-Nb+TiCo) and (L+α-Nb)→(L+α-Nb+TiCo)→(L+α-Nb+TiCo+Ti 2 Co), respectively. The cooling rates have no obvious effect on the solidification path whereas the solid back diffusion coefficient has a great effect on it. The volume fraction of primary phase increases with the increase of Nb content and Ti/Co ratio, whereas the volume fraction of eutectic phase decreases. © 2018, Science Press. All right reserved.

引用

页码：2058 / 2069

页数：11

共 31 条

[1] Zhu M., Introduction to Advanced Hydrogen Storage Materials, pp. 62-68, (2016)
[2] Song Y.-C., Ning Y.-D., Jin D.-X., Hydrogen Technology, pp. 5-11, (2009)
[3] Yan E.-H., Li X.-Z., Tang P., Su Y.-Q., Guo J.-J., Fu H.-Z., Microstructure and hydrogen permeation characteristic of near eutectic Nb-Ti-Co hydrogen separation alloy, Acta Metallurgica Sinica, 50, 1, pp. 71-78, (2014)
[4] Jiang P., Yuan T.-X., Yu Y.-D., Effect of processing conditions on microstructure and property of multiphase V-Ti-Ni alloys for hydrogen purifying, Acta Metallurgica Sinica, 53, 4, pp. 433-439, (2017)
[5] Christina L., Iva B., Martin B., Electrochemical methods to study hydrogen production during interaction of copper with deoxygenated aqueous solution, Electrochimica Acta, 202, pp. 333-344, (2016)
[6] Wang M.M., Song J., Wu X.R., Tan X.Y., Meng B., Liu S.M., Metallic nickel hollow fiber membranes for hydrogen separation at high temperatures, Journal of Membrane Science, 509, pp. 156-163, (2016)
[7] Tan P., Ge Y., Tang H.-P., Zhu J.-L., Kang X.-T., Wang Q.-B., Progress of studies on palladbranes for hydrogen separating and purifying in foreign countries, Rare Metal Materials and Engineering, 36, 3, pp. 567-570, (2007)
[8] Boroglu M.S., Yumru A.B., Gas separation performance of 6FDA-DAM-ZIF-11 mixed-matrix membranes for H 2 /CH 4 and CO 2 /CH 4 sepa
[9] Ko W.S., Shim J.H., Jung W.S., Lee B.J., Computational screening of alloying elements for the development of sustainable V-based hydrogen separation membranes, Journal of Membrane Science, 497, pp. 270-281, (2016)
[10] Yan E.-H., Sun L.-X., Xu F., Li X.-Z., Guo J.-J., Research progress of hydrogen permeation membrane made of Nb-Ni-Ti ternary alloy, Material Review, 29, 9, pp. 86-91, (2015)

← 1 2 3 4 →