Hydrogen in amorphous Zr76Fe24

The hydrogenation of amorphous Zr76Fe24 ribbons has been studied by Mossbauer spectroscopy, X-ray photoelectron spectroscopy and differential scanning calorimetry. The effusion of hydrogen has been followed by gas chromatography. The amorphous alloys were charged electrolytically to a concentration of 2.9 wt.% hydrogen, corresponding to the nominal composition Zr76Fe24H246. Analysis of the Mossbauer and photoelectron spectra indicates that the hydrogen atoms preferentially occupy sites which are very similar to those in crystalline ZrH2. Hydrogenation is found to decrease the crystallisation temperature by approximately 150K compared with uncharged samples and the crystallisation products are also found to be different. Macroscopic diffusion of hydrogen in amorphous Zr76Fe24 is very slow with negligible changes in the Mossbauer spectra of charged sampled discerned five weeks after charging.

[1]  D. Płusa.  Effect of aluminium on magnetic properties of DyFe3 compounds , 1985 .

[2]  S. Campbell,et al.  Hydride formation by zirconium-iron alloys and by η-phase Zr4Fe2O0.6 , 1984 .

[3]  R. Brand,et al.  Sign determination of the 57Fe quadrupole splitting in an amorphous Fe24Zr76 alloy , 1984 .

[4]  J. Eckert,et al.  Inelastic neutron scattering from amorphous hydride of Zr2Pd , 1984 .

[5]  Kenji Suzuki,et al.  Hydrogen atom environments in a hydrogenated ZrNi glass , 1984 .

[6]  U. Gonser,et al.  Crystallization of amorphous metal-metalloid alloys , 1984 .

[7]  W. Johnson,et al.  Glass formation by a solid state reaction of crystalline ZrX phases with hydrogen and structure of glassy hydrides , 1984 .

[8]  D. Ryan,et al.  Hydrogen-induced change in magnetic structure of the metallic glass Fe89Zr11 , 1983 .

[9]  Kenji Suzuki,et al.  Soft X-ray emission spectra and the electronic structure of amorphous alloy hydrides , 1982 .

[10]  D. Ryan,et al.  Hydrogen in amorphous magnetic alloys , 1982 .

[11]  M. Ghafari,et al.  Mössbauer study of the amorphous alloy Zr100−xFex , 1982 .

[12]  G. Schluckebier,et al.  Hydrogen in amorphous metals—I , 1982 .

[13]  K. Buschow.  Thermal stability and magnetic properties of amorphous Zr1−xFex alloys , 1981 .

[14]  J. Coey,et al.  Atomic coordination and the distribution of electric field gradients in amorphous solids , 1981 .

[15]  M. Scott,et al.  LOCAL-STRUCTURE OF AMORPHOUS ZR3FE , 1981 .

[16]  J. Dubois,et al.  Evaluation of hyperfine parameter distributions from overlapped Mossbauer spectra of amorphous alloys , 1979 .

[17]  P. Gaskell.  A new structural model for amorphous transition metal silicides, borides, phosphides and carbides , 1979 .

[18]  P. Gaskell.  A new structural model for transition metal–metalloid glasses , 1978, Nature.

[19]  H. Güntherodt,et al.  Electronic structure of amorphous transition metal alloys , 1976 .

[20]  J. Hesse,et al.  Model independent evaluation of overlapped Mossbauer spectra , 1974 .