Crystalline Aggregation of Cobalt Powder
- 1 October 1947
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 18 (10) , 902-903
- https://doi.org/10.1063/1.1697564
Abstract
In electron microscopic studies of Fischer‐Tropsch catalysts, an interesting phenomenon was observed in cobalt metal powder reduced from cobaltous oxide. The oxide particles sintered into larger smooth droplets of cobalt that were aggregated into thin hexagonal‐shaped platelets. X‐ray diffraction analysis showed the presence of the hexagonal crystal phase of cobalt. A possible explanation is that the aggregates are formed by forces similar to those operating in normal crystal formation, but of reduced magnitude insufficient to destroy the identity of the component particles.This publication has 2 references indexed in Scilit:
- Studies on the Structure of Thin Metallic Films by Means of the Electron MicroscopeJournal of Applied Physics, 1943
- Adsorption of Gases in Multimolecular LayersJournal of the American Chemical Society, 1938