Proceedings of the 43rd International Field Emission Symposium
J. Phys. IV France 06 (1996) C5-277-C5-282
Characterization of Precipitates with the Atom ProbeM.K. Miller1 and R.C. Thomson2
1 Microscopy and Microanalytical Sciences Group, Metals and Ceramics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6376, U.S.A.
2 Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K.
The parameters that can be measured from atom probe random area analyses of small spherical precipitates and platelets have been examined with a combination of simulation and geometrical models. The results indicate that the probe aperture should be less than 50% of the diameter of the precipitate in order to reliable measure the true composition in a significant proportion of precipiates.
© EDP Sciences 1996