A study on diffusion coefficient and diffusion activation energy of rare earth atoms in surface layer of steel rare earth nitrocarburized
Book
·
OSTI ID:389771
- Harbin Inst. of Tech. (China)
Steels, 20CrMnTi and 30CrMnSi, were nitrocarburized at 600 C and 650 C for 5h with rare earths (RE). The experimental results show that the rare earth elements can diffuse into the treated surface layer, in which the concentration profiles of the rare earth La were measured by chemical analysis and ion probe. The diffusion coefficient and activation energy of La have been calculated based on the experimental results mentioned above. The rare earth atoms diffuse mainly along the grain boundaries according to thermodynamic theory and analysis of the calculated data.
- OSTI ID:
- 389771
- Report Number(s):
- CONF-951222--; ISBN 0-87170-561-3
- Country of Publication:
- United States
- Language:
- English
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