In-situ electron microscopy study of the reactivity of molybdenum disulphide in various gaseous environments
| Autor: | J.J. Chludzinski, R.T.K. Baker, R.D. Sherwood |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Materials science
Hydrogen Mechanical Engineering Mineralogy chemistry.chemical_element Photochemistry Metal chemistry Electron diffraction Mechanics of Materials Molybdenum Transmission electron microscopy visual_art Scanning transmission electron microscopy visual_art.visual_art_medium General Materials Science Reactivity (chemistry) Single crystal |
| Zdroj: | Journal of Materials Science. 22:3831-3842 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/bf01133329 |
| Popis: | The interaction of single crystal molybdenum disulphide with various gases has been followed dynamically usingin situ scanning transmission electron microscopy. It is found that in the presence of oxygen attack takes place preferentially at edges and point defects on the basal plane. I1 appears that the reaction proceeds by two pathways, conversion to MoO2 predominates at low temperatures (690 K) end formation of MoO3 becoming significant at jigher temperatures (800 K), with intermediate metastable oxides playing some role. Reduction of molybdenum disulphide in hydrogen is a relatively sluggish reaction and attack occurs exclusively at the edge regions of crystals resulting in the formation of metallic molybdenum as major product with e minor amount of Mo2S3. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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