跳至主要内容

Depth Profiles of Absorbed Hydrogen in Ni-Nb-Zr Amorphous Alloy Ribbons by Glow Discharge Optical Emission Spectroscopy

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52778#.VKNeqMnQrzE

Depth profiles of absorbed hydrogen introduced by electrochemical charging and light elements were analyzed in Ni-Nb-Zr-H amorphous alloy ribbons using a glow discharge optical emission spectrometer. It was clarified that the absorbed hydrogen was comparatively well-distributed on the sample surface and that the content of the hydrogen decreased with increasing depth from the surface. That is, the amount of absorbed hydrogen on the surface was about 17 at %, while that inside the specimens decreased to several atomic percent. The depth profiles of the hydrogen which were close to the surface were slightly different between those on the roller side and those on the free side in the melt-spun ribbon. The difference is thought to originate from the existence of oxygen impurity on the surface and from the difference of the Zr content.
Cite this paper
Umetsu, R. , Saito, M. , Sasaki, T. , Sekiguchi, T. , Mizuno, J. and Kawarada, H. (2014) Depth Profiles of Absorbed Hydrogen in Ni-Nb-Zr Amorphous Alloy Ribbons by Glow Discharge Optical Emission Spectroscopy. Open Journal of Metal, 4, 112-119. doi: 10.4236/ojmetal.2014.44013.
 

[1] Zhang, W. and Inoue, A. (2003) Formation and Mechanical Properties of Ni-Based Ni-Nb-Ti-Hf Bulk Glassy Alloys. Scripta Materialia, 48, 641-645.
http://dx.doi.org/10.1016/S1359-6462(02)00469-4
[2] Chen, L.Y., Hu, H.T., Zhang, G.Q. and Jiang, J.Z. (2007) Catching the Ni-Based Ternary Metallic Glasses with Critical Diameter up to 3 mm in Ni-Nb-Zr System. Journal of Alloys and Compounds, 443, 109-113.
http://dx.doi.org/10.1016/j.jallcom.2007.02.114
[3] Kimura, H., Inoue, A., Yamaura, S., Sasamori, K., Nishida, M., Shinpo, Y. and Okouchi, H. (2003) Thermal Stability and Mechanical Properties of Glassy and Amorphous Ni-Nb-Zr Alloys Produced by Rapid Solidification. Materials Transactions, 44, 1167-1171.
http://dx.doi.org/10.2320/matertrans.44.1167
[4] Yamaura, S., Shimpo, Y., Okouchi, H., Nishida, M., Kajita, O., Kimura, H. and Inoue, A. (2003) Hydrogen Permeation Characteristics of Melt-Spun Ni-Nb-Zr Amorphous Alloy Membranes. Materials Transactions, 44, 1885-1890.
http://dx.doi.org/10.2320/matertrans.44.1885
[5] Yamaura, S., Sakurai, M., Hasegawa, M., Wakoh, K., Shimpo, Y., Nishida, M., Kimura, H., Matsubara, E. and Inoue, A. (2005) Hydrogen Permeation and Structural Features of Melt-spun Ni-Nb-Zr Amorphous Alloys. Acta Materialia, 53, 3703-3711.
http://dx.doi.org/10.1016/j.actamat.2005.04.023
[6] Kawashima, A., Yamaura, S., Ohtsu, N., Kimura, H. and Inoue, A. (2006) Mechanical Properties of Melt-Spun Amorphous Ni-Nb-Zr Alloys after Hydrogen Charging. Materials Transactions, 47, 1523-1526.
http://dx.doi.org/10.2320/matertrans.47.1523
[7] Fukuhara, M., Kawashima, A., Yamaura, S. and Inoue, A. (2007) Coulomb Oscillation of a Proton in a Ni-Nb-Zr-H Glassy Alloy with Multiple Junctions. Applied Physics Letters, 90, Article ID: 203111.
http://dx.doi.org/10.1063/1.2739080
[8] Fukuhara, M., Yoshida, H., Koyama, K., Inoue, A. and Miura, Y. (2010) Electronic Transport Behaviors of Ni-Nb-Zr-H Glassy Alloys. Journal of Applied Physics, 107, Article ID: 033703.
http://dx.doi.org/10.1063/1.3284207
[9] Umetsu, R.Y., Yoshida, H., Fukuhara, M., Yamaura, S., Sasaki, T., Sekiguchi, T., Saito, M., Mizuno J. and Kawarada, H. (2013) Effect of Hydrogen Absorption on Electrical Transport Properties for Ni36Nb24Zr40 Amorphous Alloy Ribbons. Materials Transactions, 54, 1339-1342.
http://dx.doi.org/10.2320/matertrans.MF201305
[10] Chuang, C.P., Huang, J.H., Dmowski, W., Liaw, P.K., Li, R., Zhang, T. and Ren, Y. (2009) The Effect of Hydrogen Charging on Ln-Based Amorphous Materials. Applied Physics Letters, 95, Article ID: 241901.
http://dx.doi.org/10.1063/1.3266521
[11] Kawahima, A., Yu, W.-P., Zhang, B.-P., Habazaki, H., Asami, K. and Hashimoto, K. (1997) Pitting Corrosion of Amorphous Ni-Zr Alloys in Chloride Ion Containing Sulfuric Acid Solutions. Materials Transactions, JIM, 38, 443-450.
[12] Wen, C.J., Ho, C., Boukamp, B.A., Raistrick, I.D., Weppner, W. and Huggins, R.A. (1981) Use of Electrochemical Methods to Determine Chemical-Diffusion Coefficients in Alloys: Application to “LiAl”. International Materials Reviews, 26, 253-268.
http://dx.doi.org/10.1179/imtr.1981.26.1.253
[13] Sundaram, P.A., Wessel, E., Clemens, H., Kestler, H., Ennis, P.J., Quadakkers, W.J. and Singheiser, L. (2000) Determination of the Diffusion Coefficient of Hydrogen in Gamma Titanium Aluminides during Electrolytic Charging. ActaMaterialia, 48, 1005-1019.
http://dx.doi.org/10.1016/S1359-6454(99)00431-0
[14] Kirchheim, R. (1988) Hydrogen Solubility and Diffusivity in Defective and Amorphous Metals. Progress in Materials Science, 32, 261-325.
http://dx.doi.org/10.1016/0079-6425(88)90010-2
[15] Kirchheim, R., Kieninger, W., Huang, X.Y., Filipek, S.M., Rush, J. and Udovic, T. (1991) Hydrogen in Amorphous Ni-Zr and Ni-Ti Alloys. Journal of the Less Common Metals, 172-174, 880-889.
http://dx.doi.org/10.1016/0022-5088(91)90216-Q           eww141231lx
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文