Characteristics of Mg2Ni0.75Co0.25 alloy after surface treatment
作者： Huabin Yang , Huatang Yuan , Zuoxiang Zhou , Genshi Wang , Yunshi Zhang
DOI: 10.1016/S0925-8388(00)00738-6
关键词:
摘要: Abstract Mg 2 Ni 0.75 Co 0.25 alloy has been successfully synthesized by the Ball milling diffusion method. A part of product was treated different concentrations a NH 4 F solution. The results showed that 0.06 M solution had best performance. During treatment, 3 ·H O, one byproducts could be used to indicate end etching process. study surface state beneath honeycomb MgF layer, metallic Ni-rich layer formed. This believed have high activity, concentration approaching 70 at.%, which much higher than 25 at.% in bulk. hydrogen desorption capacity reached highest value after only adsorption/desorption cycles. 372 ml(S.T.P.)H /g·alloy (250°C) ( H / =1.18). properties and untreated alloys plateau not changed even treatment. specific 4.1 m /g All above revealed quite from alloy. It is possible existence main reason improvement hydriding/dehydriding properties.
elsevier.com
sci-hub.se 参考文章(14)
F.-J. Liu, S. Suda, Hydriding behavior of F-treated Mg2Ni at moderate conditions Journal of Alloys and Compounds. ,vol. 232, pp. 212- 217 ,(1996) , 10.1016/0925-8388(95)01931-6
Hayao Imamura, Toshio Takahashi, Ramiro Galleguillos, Susumu Tsuchiya, Hydrogen absorption in modified intermetallic compound systems Journal of The Less Common Metals. ,vol. 89, pp. 251- 256 ,(1983) , 10.1016/0022-5088(83)90276-X
Hayao Imamura, Minoru Kawahigashi, Susumu Tsuchiya, Exceptionally active magnesium for hydrogen storage: Solvated magnesium clusters formed in low temperature matrices Journal of The Less Common Metals. ,vol. 95, pp. 157- 160 ,(1983) , 10.1016/0022-5088(83)90396-X
F.G. Eisenberg, D.A. Zagnoli, J.J. Sheridan, The effect of surface nickel on the hydriding-dehydriding kinetics of MgH2 Journal of The Less Common Metals. ,vol. 74, pp. 323- 331 ,(1980) , 10.1016/0022-5088(80)90170-8
Yunshi Zhang, Huabin Yang, Huatang Yuan, Endong Yang, Zuoxiang Zhou, Deying Song, Dehydriding properties of ternary Mg2Ni1−xZrx hydrides synthesized by ball milling and annealing Journal of Alloys and Compounds. ,vol. 269, pp. 278- 283 ,(1998) , 10.1016/S0925-8388(98)00222-9
X.-L. Wang, S. Suda, Surface study of chemically treated LaNi4.7Al0.3 alloy Journal of Alloys and Compounds. ,vol. 194, pp. 73- 76 ,(1993) , 10.1016/0925-8388(93)90648-7
F.-J. Liu, S. Suda, Surface treatment effect on the low temperature hydriding behavior of Mg2Ni Journal of Alloys and Compounds. ,vol. 230, pp. 58- 62 ,(1995) , 10.1016/0925-8388(95)01930-8
Huatang Yuan, Huabin Yang, Zuoxiang Zhou, Deying Song, Yunshi Zhang, Pressure-composition isotherms of the Mg2Ni0.75Fe0.25-Mg system synthesized by replacement-diffusion method Journal of Alloys and Compounds. ,vol. 260, pp. 256- 259 ,(1997) , 10.1016/S0925-8388(97)00170-9
Allen J. Bard, Encyclopedia of Electrochemistry of the Elements ,(1978)
P. Spatz, H. A. Aebischer, A. Krozer, L. Schlapbach, The Diffusion of H in Mg and the Nucleation and Growth of MgH2in Thin Films* Zeitschrift für Physikalische Chemie. ,vol. 181, pp. 393- 397 ,(1993) , 10.1524/ZPCH.1993.181.PART_1_2.393