Thermodynamical activities of nitrogen and carbon imposed by gaseous nitriding and carburizing atmospheres
Conference
·
OSTI ID:389751
- Delft Univ. of Technology Rotterdamseweg (Netherlands). Lab. of Materials Science
The essential elements of the thermodynamical background for the definition of the so-called nitrogen and carbon activities in nitrided and carburized surface layers of iron-based substrates were presented in a comparative manner. The choice of the distinct reference states was discussed. Practical examples were used to show how the nitrogen and carbon activities can be established. The activities can for example be used to determine the dissolved amounts of nitrogen and carbon. Also, knowledge of the nitrogen and carbon activities allows to minimize and to control the nitrogen gas pore formation, and/or to avoid the graphite and/or cementite formation in engineered surface layers.
- OSTI ID:
- 389751
- Report Number(s):
- CONF-951222--; ISBN 0-87170-561-3
- Country of Publication:
- United States
- Language:
- English
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