I have a spectrum (up to 300eV above the edge) for haxonite, another Fe carbide, which is found in meteorites. The sample was a
meteorite section provided by
Excalibur Minerals. If you have any of the Fe3C sample left over, I'd love to have it to measure myself.
mam
----- Original Message -----
From: "Andrew"
Bhoopesh,
There's a paper which says how to make it if you want to run it on your own:
"Fe3C, which can form during FTS reactions, was prepared by temperature-programmed reaction (0.167 K/s) of Fe2O3 up to 973 K using CO (Matheson, 99.99%, 107 mol of CO/mol of Fe h) as the reduction and carburization agent. The resulting Fe3C powder was passivated in flowing 1% O2/ He (Matheson, 99.999%, 0.05 mol/h) at room temperature (RT) for 1 h before removing the sample from the synthesis cell." [1] S. Li, G.D. Meitzner and E. Iglesia, J. Phys. Chem. B, 105 (2001) 5743.
I made some myself using this method. I would send my spectrum, but if I can recall we had glitches in the EXAFS region.
Andrew Campos
** If you want other iron carbides, this will be quite tricky since this is the only one that can be synthesized to a pure extent... obviously one could make cementite to using an iron melt but that requires really high temperature furnaces etc.
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