STUDIES ON ELECTRODEPOSITED Ni-Mo NANOCRYSTALLINE ALLOY,
M.Karolus, E.L/agiewka, Institute of Physics and Chemistry of Metals,
University of Silesia, Bankowa 12, 40-007 Katowice, Poland.
The studies on structure of electrodeposited Ni-Mo nanocrystalline alloys
were subject of this paper. The contents of molybdenum in alloys was
growing with the change of current density - from 2.5 to 300 [mA/cm2] - were
in a range from 3.5 to 23 [at.%]. The X-ray diffraction was performed using
the Philips Diffractometer PW1130 with cooper radiation (l = 1.5418 Ĺ) and
grafite monochromator on the diffracted beam. The structure analysis was
prepared by Rietveld Refinement using DBWS 1988 RR version program. The
received occuracy parameters: Rp and Rwp were in a range from 3 to 8 % and
goodness of fit was about 2%. Basing on the Rietveld refinement results, the
change of lattice parameters - a (from 3.50 to 3.56 Ĺ), the crystalline size
- D (from 900 to 60 nm), and the lattice strain - [[image002.gif] ] (from
2.4 to 16.8 x 10^-3) were also studied. Moreover, it was noticed that the
sample received for 2.5 mA/cm2 had a texture effect and also the different
structure deffects (e.g. twinning) were observed in others samples.

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