| Issue |
J. Phys. Colloques
Volume 49, Number C6, Novembre 1988
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
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| Page(s) | C6-397 - C6-402 | |
| DOI | https://doi.org/10.1051/jphyscol:1988668 | |
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
J. Phys. Colloques 49 (1988) C6-397-C6-402
DOI: 10.1051/jphyscol:1988668
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
J. Phys. Colloques 49 (1988) C6-397-C6-402
DOI: 10.1051/jphyscol:1988668
AN ATOM PROBE STUDY OF PHASE DECOMPOSITION IN THE CAPE YORK METEORITE
M.K. MILLER et K.F. RUSSELLMetals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Abstract
An atom probe field-ion microscopy characterization of the Cape York iron-nickel meteorite has been performed. This investigation has revealed that an Fe-28 at. % Ni region in the taenite plate has phase separated to form an ultra-fine scale duplex microstructure. The results indicate the presence of composition modulations with a periodicity of approximately 10 nm and amplitude fluctuations from 50 at. % Ni to approximately 15 at. % Ni. In contrast, an Fe-20 at. % Nickel region revealed only minor fluctuations in composition.