The effect of surface pre-treatment on carbon solution and deposition in the iron-methane reaction
β Scribed by A.M. Emsley; M.P. Hill
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 722 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0008-6223
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π SIMILAR VOLUMES
The effect of a hydrostatic pressure of 42 kb on the kinetics of the athermal transformation of austenite to martensite have been investigated for high-purity iron-carbon alloys containing 0.3-1.23 wt.% carbon. At this pressure, depending on the composition, the martensite start temperature (M,) i
kz and permit determination of the activation energy (22 kcal) for step 2. Together with the activation energy (52 kcal) for step 1, one obtains 32 kcal as the heat of dissociation of the C-C bond in CsOz at 1000Β°K. This figure, which at first seems surprisingly low, leads to a reasonable value (f51