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

A Comparison of Methods Used to Determine the Oleic/Linoleic Acid Ratio in Cultivated Peanut (Arachis hypogaea L.)

Cultivated peanut ( Arachis hypogaea L.) is an important oil and food crop. It is also a cheap source of protein, a good source of essential vitamins and minerals, and a component of many food products. The fatty acid composition of peanuts has become increasingly important with the realization that oleic acid content significantly affects the development of rancidity. And oil content of peanuts significantly affects flavor and shelf-life. Early generation screening of breeding lines for high oleic acid content greatly increases the efficiency of developing new peanut varieties. The objective of this study was to compare the accuracy of methods used to classify individual peanut seed as high oleic or not high oleic. Three hundred and seventy-four (374) seeds, spanning twenty-three (23) genotypes varying in oil composition (i.e. high oleic (H) or normal/not high oleic (NH) inclusive of all four peanut market-types (runner, Spanish, Valencia and Virginia), were individually tested ...
发表评论
阅读全文

Location Optimization of a Coal Power Plant to Balance Costs against Plant’s Emission Exposure

Fuel and its delivery cost comprise the biggest expense in coal power plant operations. Delivery of electricity from generation to consumers requires investment in power lines and transmission grids. Placing a coal power plant or multiple power plants near dense population centers can lower transmission costs. If a coalmine is nearby, transportation costs can also be reduced. However, emissions from coal plants play a key role in worsening health crises in many countries. And coal upon combustion produces CO 2 , SO 2 , NO x , CO, Metallic and Particle Matter (PM10 & PM2.5). The presence of these chemical compounds in the atmosphere in close vicinity to humans, livestock, and agriculture carries detrimental health consequences. The goal of the research was to develop a methodology to minimize the public’s exposure to harmful emissions from coal power plants while maintaining minimal operational costs related to electric distribution losses and coal logistics. The objective was...
发表评论
阅读全文

Evaluation of the Safety and Efficacy of Continuous Use of a Home-Use High-Frequency Facial Treatment Appliance

At present, many home-use beauty devices are available in the market. In particular, many products developed for facial treatment use light, e.g., a flash lamp or a light-emitting diode (LED). In this study, the safety of 4 weeks’ continuous use of NEWA TM , a high-frequency facial treatment appliance, every alternate day at home was verified, and its efficacy was evaluated in Japanese individuals with healthy skin aged 30 years or older who complained of sagging of the facial skin.  Transepidermal water loss (TEWL), melanin levels, erythema levels, sebum secretion levels, skin color changes and wrinkle improvement in the facial skin were measured before the appliance began to be used (study baseline), at 2 and 4 weeks after it had begun to be used, and at 2 weeks after completion of the 4-week treatment period (6 weeks from the study baseline). In addition, data obtained by subjective evaluation by the subjects themselves on a visual analog scale (VAS) were also analyzed. Fur...
发表评论
阅读全文