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- Title
Interaction of diamond with ultrafine Fe powders prepared by different procedures.
- Authors
Chepurov, A.; Sonin, V.; Zhimulev, E.; Tolochko, B.; Eliseev, V.
- Abstract
We have studied the interaction of synthetic diamond crystals with ultrafine Fe powders during catalytic diamond gasification in a hydrogen atmosphere at 900°C. The Fe powders were prepared by three procedures: reduction of FeO nanopowder; evaporation using an ELV-6 electron accelerator, followed by condensation; and reduction of ferric chloride. The surface-processed diamond crystals were examined by electron microscopy. The results indicate that ultrafine powders produced by the first two procedures cause predominantly lateral etching of diamond. The Fe particles prepared by the third procedure penetrate into the bulk of diamond crystals and produce etch pits and 'tunnels,' thereby markedly increasing the specific surface area of the crystals.
- Subjects
POWDER metallurgy; FERRIC chloride; DIAMOND crystals; METAL etching; SURFACE area; ELECTRON accelerators; CONDENSATION; IRON catalysts
- Publication
Inorganic Materials, 2011, Vol 47, Issue 8, p864
- ISSN
0020-1685
- Publication type
Article
- DOI
10.1134/S0020168511070077