ATOM-PROBE FIELD-ION MICROSCOPY OF MICRO-CLUSTERS IN AN Ni4Mo ALLOY

T. Hashizume, M. Yamamoto, T. Sakurai
1987 Le Journal de Physique Colloques  
Field evaporation of micro-clusters in a NiqMo alloy was studied. When field evaporation was carried out in vacuum, sporadic field evaporation of the surface atoms was frequently observed and the atom-probe analysis resulted in the higher Mo concentration for micro-clusters. We have found that this apparently erroneous composition was caused by simultaneous arrival of more thanone ion ofthe same isotope species at the detector. The appropriate experimental conditions to obtain
more » ... n stoichiometrically correct values of the composition for microclusters were then discussed.
doi:10.1051/jphyscol:1987652 fatcat:5nnq6uldwjcbrasuql43pnzgl4