P. Staron et al., INVESTIGATION OF THE NUCLEATION STAGE IN A NI-13 AT-PERCENT AL-ALLOY BY MEANS OF POLARIZED NEUTRON-SCATTERING, Physica. B, Condensed matter, 213, 1995, pp. 815-817
The nucleation stages of the decomposition reaction in a Ni-58-13 at%
Al alloy at T = 450 degrees C have been investigated by means of small
- and wide-angle polarized-neutron scattering. The use of the Ni-58 is
otope for the sample preparation tremendously reduced the incoherent s
cattering of the matrix. This, together with the application of polari
zed neutrons for studies at T = 12 K, made the detection of extremely
small Ni3Al clusters with diameters D < 1 mm feasible.