Abstract
An atom probe field ion microscope characterization has been performed on a weathered region of the Santa Catharina meteorite (USNM #3043). This meteorite consists primarily of a metallic matrix, oxides, and Schreibersite (FeNi) 3P. The metallic matrix was found to have decomposed into a random distribution of ∼ 12 nm diameter precipitates with compositions ranging from 38.6–54 at.% Ni in a matrix with lower nickel levels. Atom probe composition profiles between precipitates revealed a characteristic W-shaped nickel profile ranging from approximately 15% nickel adjacent to the precipitates to approximately 25% nickel in the central region away from the precipitates.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
